./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya --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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:05:37,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:05:37,508 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:05:37,513 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:05:37,513 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:05:37,539 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:05:37,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:05:37,541 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:05:37,541 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:05:37,542 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:05:37,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:05:37,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:05:37,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:05:37,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:05:37,545 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:05:37,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:05:37,546 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:05:37,546 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:05:37,547 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:05:37,548 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:05:37,548 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:05:37,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:05:37,551 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:05:37,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:05:37,552 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:05:37,553 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:05:37,553 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:05:37,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:05:37,554 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:05:37,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:05:37,555 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:05:37,555 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:05:37,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:05:37,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:05:37,556 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:05:37,556 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:05:37,556 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:05:37,556 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:05:37,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:05:37,557 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:05:37,557 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:05:37,557 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:05:37,558 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:05:37,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:05:37,558 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_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2023-11-29 01:05:37,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:05:37,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:05:37,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:05:37,805 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:05:37,805 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:05:37,807 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/queue.i [2023-11-29 01:05:40,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:05:40,778 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:05:40,778 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/sv-benchmarks/c/pthread/queue.i [2023-11-29 01:05:40,796 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/data/a2a0a9525/bc9c4c61a61a4a57b7b7c5326ae6db47/FLAGdd2da2d4d [2023-11-29 01:05:40,810 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/data/a2a0a9525/bc9c4c61a61a4a57b7b7c5326ae6db47 [2023-11-29 01:05:40,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:05:40,813 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:05:40,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:05:40,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:05:40,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:05:40,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:05:40" (1/1) ... [2023-11-29 01:05:40,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a7f0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:40, skipping insertion in model container [2023-11-29 01:05:40,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:05:40" (1/1) ... [2023-11-29 01:05:40,871 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:05:41,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:05:41,243 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:05:41,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:05:41,363 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:05:41,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:41 WrapperNode [2023-11-29 01:05:41,363 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:05:41,364 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:05:41,364 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:05:41,365 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:05:41,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:41" (1/1) ... [2023-11-29 01:05:41,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:41" (1/1) ... [2023-11-29 01:05:41,423 INFO L138 Inliner]: procedures = 275, calls = 74, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 287 [2023-11-29 01:05:41,423 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:05:41,423 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:05:41,424 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:05:41,424 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:05:41,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:41" (1/1) ... [2023-11-29 01:05:41,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:41" (1/1) ... [2023-11-29 01:05:41,442 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:41" (1/1) ... [2023-11-29 01:05:41,462 INFO L175 MemorySlicer]: Split 55 memory accesses to 7 slices as follows [2, 8, 2, 5, 4, 2, 32]. 58 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 8, 0, 5, 0, 0, 0]. The 20 writes are split as follows [0, 0, 1, 0, 3, 1, 15]. [2023-11-29 01:05:41,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:41" (1/1) ... [2023-11-29 01:05:41,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:41" (1/1) ... [2023-11-29 01:05:41,477 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:41" (1/1) ... [2023-11-29 01:05:41,480 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:41" (1/1) ... [2023-11-29 01:05:41,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:41" (1/1) ... [2023-11-29 01:05:41,486 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:41" (1/1) ... [2023-11-29 01:05:41,492 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:05:41,493 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:05:41,493 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:05:41,493 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:05:41,494 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:41" (1/1) ... [2023-11-29 01:05:41,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:05:41,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:41,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:05:41,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:05:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-29 01:05:41,571 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-29 01:05:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-29 01:05:41,571 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-29 01:05:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:05:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:05:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 01:05:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:05:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:05:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:05:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:05:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 01:05:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 01:05:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 01:05:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:05:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:05:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:05:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:05:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 01:05:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 01:05:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 01:05:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 01:05:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:05:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:05:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:05:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:05:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:05:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:05:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 01:05:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 01:05:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:05:41,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:05:41,577 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:05:41,758 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:05:41,760 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:05:42,120 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:05:42,397 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:05:42,397 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 01:05:42,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:05:42 BoogieIcfgContainer [2023-11-29 01:05:42,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:05:42,399 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:05:42,400 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:05:42,402 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:05:42,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:05:40" (1/3) ... [2023-11-29 01:05:42,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a57b097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:05:42, skipping insertion in model container [2023-11-29 01:05:42,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:41" (2/3) ... [2023-11-29 01:05:42,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a57b097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:05:42, skipping insertion in model container [2023-11-29 01:05:42,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:05:42" (3/3) ... [2023-11-29 01:05:42,404 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-11-29 01:05:42,411 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:05:42,419 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:05:42,419 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-29 01:05:42,419 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:05:42,485 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 01:05:42,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 87 transitions, 188 flow [2023-11-29 01:05:42,549 INFO L124 PetriNetUnfolderBase]: 10/85 cut-off events. [2023-11-29 01:05:42,549 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 01:05:42,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 10/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 228 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2023-11-29 01:05:42,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 87 transitions, 188 flow [2023-11-29 01:05:42,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 81 transitions, 171 flow [2023-11-29 01:05:42,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:05:42,572 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;@474251f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:05:42,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-29 01:05:42,577 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:05:42,578 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-29 01:05:42,578 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:05:42,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:42,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:42,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:42,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:42,584 INFO L85 PathProgramCache]: Analyzing trace with hash -417298804, now seen corresponding path program 1 times [2023-11-29 01:05:42,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:42,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765337711] [2023-11-29 01:05:42,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:42,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:43,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:43,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765337711] [2023-11-29 01:05:43,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765337711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:43,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:43,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:05:43,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486913601] [2023-11-29 01:05:43,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:43,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:05:43,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:43,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:05:43,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:05:43,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 87 [2023-11-29 01:05:43,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:43,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:43,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 87 [2023-11-29 01:05:43,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:43,714 INFO L124 PetriNetUnfolderBase]: 1255/2606 cut-off events. [2023-11-29 01:05:43,715 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-29 01:05:43,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4628 conditions, 2606 events. 1255/2606 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 16689 event pairs, 268 based on Foata normal form. 60/2289 useless extension candidates. Maximal degree in co-relation 4506. Up to 1781 conditions per place. [2023-11-29 01:05:43,742 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 83 selfloop transitions, 6 changer transitions 0/119 dead transitions. [2023-11-29 01:05:43,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 119 transitions, 431 flow [2023-11-29 01:05:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:05:43,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:05:43,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 254 transitions. [2023-11-29 01:05:43,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5839080459770115 [2023-11-29 01:05:43,756 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 254 transitions. [2023-11-29 01:05:43,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 254 transitions. [2023-11-29 01:05:43,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:43,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 254 transitions. [2023-11-29 01:05:43,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.8) internal successors, (254), 5 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:43,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:43,768 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:43,770 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 171 flow. Second operand 5 states and 254 transitions. [2023-11-29 01:05:43,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 119 transitions, 431 flow [2023-11-29 01:05:43,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 119 transitions, 424 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:05:43,780 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 210 flow [2023-11-29 01:05:43,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2023-11-29 01:05:43,786 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 4 predicate places. [2023-11-29 01:05:43,786 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 210 flow [2023-11-29 01:05:43,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:43,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:43,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:43,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:05:43,787 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:43,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:43,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2112527856, now seen corresponding path program 1 times [2023-11-29 01:05:43,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:43,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060020959] [2023-11-29 01:05:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:43,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:44,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:44,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060020959] [2023-11-29 01:05:44,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060020959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:44,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:44,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:05:44,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005141626] [2023-11-29 01:05:44,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:44,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:05:44,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:44,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:05:44,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:05:44,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 87 [2023-11-29 01:05:44,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:44,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:44,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 87 [2023-11-29 01:05:44,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:44,631 INFO L124 PetriNetUnfolderBase]: 1339/2720 cut-off events. [2023-11-29 01:05:44,631 INFO L125 PetriNetUnfolderBase]: For 348/354 co-relation queries the response was YES. [2023-11-29 01:05:44,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5193 conditions, 2720 events. 1339/2720 cut-off events. For 348/354 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 17350 event pairs, 270 based on Foata normal form. 40/2391 useless extension candidates. Maximal degree in co-relation 4931. Up to 1831 conditions per place. [2023-11-29 01:05:44,652 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 104 selfloop transitions, 11 changer transitions 0/145 dead transitions. [2023-11-29 01:05:44,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 145 transitions, 580 flow [2023-11-29 01:05:44,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:05:44,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:05:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 342 transitions. [2023-11-29 01:05:44,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5615763546798029 [2023-11-29 01:05:44,656 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 342 transitions. [2023-11-29 01:05:44,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 342 transitions. [2023-11-29 01:05:44,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:44,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 342 transitions. [2023-11-29 01:05:44,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 48.857142857142854) internal successors, (342), 7 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:44,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:44,662 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:44,662 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 210 flow. Second operand 7 states and 342 transitions. [2023-11-29 01:05:44,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 145 transitions, 580 flow [2023-11-29 01:05:44,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 145 transitions, 580 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:05:44,669 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 279 flow [2023-11-29 01:05:44,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=279, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2023-11-29 01:05:44,670 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 13 predicate places. [2023-11-29 01:05:44,670 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 279 flow [2023-11-29 01:05:44,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:44,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:44,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:44,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:05:44,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:44,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:44,671 INFO L85 PathProgramCache]: Analyzing trace with hash -800530924, now seen corresponding path program 1 times [2023-11-29 01:05:44,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:44,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508768612] [2023-11-29 01:05:44,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:44,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:44,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:44,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:44,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508768612] [2023-11-29 01:05:44,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508768612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:44,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:44,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:05:44,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426277971] [2023-11-29 01:05:44,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:44,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:05:44,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:44,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:05:44,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:05:44,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 87 [2023-11-29 01:05:44,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:44,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:44,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 87 [2023-11-29 01:05:44,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:45,148 INFO L124 PetriNetUnfolderBase]: 1043/2410 cut-off events. [2023-11-29 01:05:45,148 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2023-11-29 01:05:45,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4410 conditions, 2410 events. 1043/2410 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14167 event pairs, 492 based on Foata normal form. 42/2149 useless extension candidates. Maximal degree in co-relation 4400. Up to 900 conditions per place. [2023-11-29 01:05:45,165 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 66 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2023-11-29 01:05:45,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 99 transitions, 378 flow [2023-11-29 01:05:45,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:05:45,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:05:45,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2023-11-29 01:05:45,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6819923371647509 [2023-11-29 01:05:45,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 178 transitions. [2023-11-29 01:05:45,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 178 transitions. [2023-11-29 01:05:45,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:45,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 178 transitions. [2023-11-29 01:05:45,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:45,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:45,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:45,170 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 279 flow. Second operand 3 states and 178 transitions. [2023-11-29 01:05:45,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 99 transitions, 378 flow [2023-11-29 01:05:45,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 343 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-11-29 01:05:45,175 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 171 flow [2023-11-29 01:05:45,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2023-11-29 01:05:45,177 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2023-11-29 01:05:45,177 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 171 flow [2023-11-29 01:05:45,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:45,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:45,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:45,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:05:45,178 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:45,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:45,178 INFO L85 PathProgramCache]: Analyzing trace with hash -511076617, now seen corresponding path program 1 times [2023-11-29 01:05:45,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:45,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229712594] [2023-11-29 01:05:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:45,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:45,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:45,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229712594] [2023-11-29 01:05:45,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229712594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:45,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:45,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:05:45,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995771757] [2023-11-29 01:05:45,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:45,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:05:45,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:45,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:05:45,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:05:45,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 01:05:45,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:45,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:45,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 01:05:45,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:45,912 INFO L124 PetriNetUnfolderBase]: 1928/4246 cut-off events. [2023-11-29 01:05:45,912 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2023-11-29 01:05:45,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7578 conditions, 4246 events. 1928/4246 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 27862 event pairs, 979 based on Foata normal form. 142/3861 useless extension candidates. Maximal degree in co-relation 7572. Up to 2026 conditions per place. [2023-11-29 01:05:45,941 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 116 selfloop transitions, 3 changer transitions 0/147 dead transitions. [2023-11-29 01:05:45,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 147 transitions, 566 flow [2023-11-29 01:05:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:05:45,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:05:45,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-29 01:05:45,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7327586206896551 [2023-11-29 01:05:45,943 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-29 01:05:45,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-29 01:05:45,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:45,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-29 01:05:45,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:45,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:45,946 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:45,946 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 171 flow. Second operand 4 states and 255 transitions. [2023-11-29 01:05:45,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 147 transitions, 566 flow [2023-11-29 01:05:45,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 147 transitions, 560 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:05:45,950 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 192 flow [2023-11-29 01:05:45,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2023-11-29 01:05:45,951 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 2 predicate places. [2023-11-29 01:05:45,952 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 192 flow [2023-11-29 01:05:45,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:45,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:45,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:45,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:05:45,953 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:45,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:45,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1755949945, now seen corresponding path program 1 times [2023-11-29 01:05:45,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:45,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631930424] [2023-11-29 01:05:45,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:45,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:46,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:46,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:46,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631930424] [2023-11-29 01:05:46,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631930424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:46,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:46,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:05:46,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524795672] [2023-11-29 01:05:46,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:46,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:05:46,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:05:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:05:46,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 87 [2023-11-29 01:05:46,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:46,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:46,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 87 [2023-11-29 01:05:46,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:46,733 INFO L124 PetriNetUnfolderBase]: 1751/3932 cut-off events. [2023-11-29 01:05:46,734 INFO L125 PetriNetUnfolderBase]: For 814/938 co-relation queries the response was YES. [2023-11-29 01:05:46,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7525 conditions, 3932 events. 1751/3932 cut-off events. For 814/938 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 25687 event pairs, 289 based on Foata normal form. 0/3477 useless extension candidates. Maximal degree in co-relation 7517. Up to 2477 conditions per place. [2023-11-29 01:05:46,754 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 76 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2023-11-29 01:05:46,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 111 transitions, 472 flow [2023-11-29 01:05:46,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:05:46,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:05:46,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 253 transitions. [2023-11-29 01:05:46,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5816091954022988 [2023-11-29 01:05:46,756 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 253 transitions. [2023-11-29 01:05:46,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 253 transitions. [2023-11-29 01:05:46,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:46,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 253 transitions. [2023-11-29 01:05:46,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:46,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:46,760 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:46,760 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 192 flow. Second operand 5 states and 253 transitions. [2023-11-29 01:05:46,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 111 transitions, 472 flow [2023-11-29 01:05:46,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 111 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:05:46,763 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 198 flow [2023-11-29 01:05:46,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2023-11-29 01:05:46,764 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2023-11-29 01:05:46,764 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 198 flow [2023-11-29 01:05:46,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:46,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:46,765 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:46,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:05:46,765 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:46,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:46,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1258275283, now seen corresponding path program 1 times [2023-11-29 01:05:46,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:46,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401107684] [2023-11-29 01:05:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:46,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:46,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:46,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:46,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401107684] [2023-11-29 01:05:46,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401107684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:05:46,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927554612] [2023-11-29 01:05:46,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:46,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:46,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:46,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:46,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:05:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:46,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:05:46,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:47,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:05:47,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927554612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:47,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:05:47,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 01:05:47,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666111156] [2023-11-29 01:05:47,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:47,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:05:47,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:47,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:05:47,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:05:47,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 87 [2023-11-29 01:05:47,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:47,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:47,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 87 [2023-11-29 01:05:47,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:47,729 INFO L124 PetriNetUnfolderBase]: 1950/3988 cut-off events. [2023-11-29 01:05:47,730 INFO L125 PetriNetUnfolderBase]: For 395/395 co-relation queries the response was YES. [2023-11-29 01:05:47,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8057 conditions, 3988 events. 1950/3988 cut-off events. For 395/395 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 24816 event pairs, 98 based on Foata normal form. 72/3684 useless extension candidates. Maximal degree in co-relation 8049. Up to 1954 conditions per place. [2023-11-29 01:05:47,756 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 103 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2023-11-29 01:05:47,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 135 transitions, 552 flow [2023-11-29 01:05:47,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:05:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:05:47,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2023-11-29 01:05:47,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6781609195402298 [2023-11-29 01:05:47,758 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 236 transitions. [2023-11-29 01:05:47,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 236 transitions. [2023-11-29 01:05:47,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:47,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 236 transitions. [2023-11-29 01:05:47,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:47,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:47,761 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:47,761 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 198 flow. Second operand 4 states and 236 transitions. [2023-11-29 01:05:47,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 135 transitions, 552 flow [2023-11-29 01:05:47,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 135 transitions, 526 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 01:05:47,767 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 194 flow [2023-11-29 01:05:47,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2023-11-29 01:05:47,768 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2023-11-29 01:05:47,768 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 194 flow [2023-11-29 01:05:47,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:47,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:47,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:47,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:05:47,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:47,971 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:47,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:47,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1965259429, now seen corresponding path program 1 times [2023-11-29 01:05:47,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:47,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125007806] [2023-11-29 01:05:47,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:47,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:48,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:48,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:48,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125007806] [2023-11-29 01:05:48,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125007806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:48,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:48,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:05:48,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995632689] [2023-11-29 01:05:48,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:48,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:05:48,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:48,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:05:48,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:05:48,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 87 [2023-11-29 01:05:48,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:48,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:48,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 87 [2023-11-29 01:05:48,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:49,212 INFO L124 PetriNetUnfolderBase]: 2130/4536 cut-off events. [2023-11-29 01:05:49,212 INFO L125 PetriNetUnfolderBase]: For 1756/1824 co-relation queries the response was YES. [2023-11-29 01:05:49,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9297 conditions, 4536 events. 2130/4536 cut-off events. For 1756/1824 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 29712 event pairs, 421 based on Foata normal form. 22/4061 useless extension candidates. Maximal degree in co-relation 9289. Up to 2157 conditions per place. [2023-11-29 01:05:49,232 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 114 selfloop transitions, 7 changer transitions 0/148 dead transitions. [2023-11-29 01:05:49,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 148 transitions, 713 flow [2023-11-29 01:05:49,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:05:49,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:05:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 333 transitions. [2023-11-29 01:05:49,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467980295566502 [2023-11-29 01:05:49,234 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 333 transitions. [2023-11-29 01:05:49,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 333 transitions. [2023-11-29 01:05:49,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:49,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 333 transitions. [2023-11-29 01:05:49,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 47.57142857142857) internal successors, (333), 7 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:49,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:49,237 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:49,237 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 194 flow. Second operand 7 states and 333 transitions. [2023-11-29 01:05:49,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 148 transitions, 713 flow [2023-11-29 01:05:49,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 148 transitions, 653 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:05:49,241 INFO L231 Difference]: Finished difference. Result has 88 places, 80 transitions, 220 flow [2023-11-29 01:05:49,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=220, PETRI_PLACES=88, PETRI_TRANSITIONS=80} [2023-11-29 01:05:49,242 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 9 predicate places. [2023-11-29 01:05:49,242 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 80 transitions, 220 flow [2023-11-29 01:05:49,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:49,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:49,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:49,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:05:49,243 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:49,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:49,243 INFO L85 PathProgramCache]: Analyzing trace with hash -351827255, now seen corresponding path program 1 times [2023-11-29 01:05:49,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:49,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623569504] [2023-11-29 01:05:49,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:49,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:05:49,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:49,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623569504] [2023-11-29 01:05:49,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623569504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:49,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:49,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:05:49,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153646100] [2023-11-29 01:05:49,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:49,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:05:49,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:49,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:05:49,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:05:49,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 87 [2023-11-29 01:05:49,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:49,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:49,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 87 [2023-11-29 01:05:49,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:49,790 INFO L124 PetriNetUnfolderBase]: 2044/4322 cut-off events. [2023-11-29 01:05:49,790 INFO L125 PetriNetUnfolderBase]: For 975/1067 co-relation queries the response was YES. [2023-11-29 01:05:49,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8775 conditions, 4322 events. 2044/4322 cut-off events. For 975/1067 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 28190 event pairs, 384 based on Foata normal form. 38/4043 useless extension candidates. Maximal degree in co-relation 8765. Up to 2053 conditions per place. [2023-11-29 01:05:49,808 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 102 selfloop transitions, 6 changer transitions 6/142 dead transitions. [2023-11-29 01:05:49,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 142 transitions, 618 flow [2023-11-29 01:05:49,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:05:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:05:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2023-11-29 01:05:49,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6781609195402298 [2023-11-29 01:05:49,810 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 236 transitions. [2023-11-29 01:05:49,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 236 transitions. [2023-11-29 01:05:49,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:49,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 236 transitions. [2023-11-29 01:05:49,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:49,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:49,812 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:49,813 INFO L175 Difference]: Start difference. First operand has 88 places, 80 transitions, 220 flow. Second operand 4 states and 236 transitions. [2023-11-29 01:05:49,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 142 transitions, 618 flow [2023-11-29 01:05:49,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 142 transitions, 602 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:05:49,818 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 226 flow [2023-11-29 01:05:49,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=88, PETRI_TRANSITIONS=78} [2023-11-29 01:05:49,819 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 9 predicate places. [2023-11-29 01:05:49,819 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 226 flow [2023-11-29 01:05:49,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:49,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:49,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:49,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:05:49,820 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:49,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:49,821 INFO L85 PathProgramCache]: Analyzing trace with hash -793499335, now seen corresponding path program 1 times [2023-11-29 01:05:49,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:49,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35497188] [2023-11-29 01:05:49,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:49,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:50,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:50,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35497188] [2023-11-29 01:05:50,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35497188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:50,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:50,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:05:50,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000841043] [2023-11-29 01:05:50,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:50,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:05:50,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:50,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:05:50,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:05:50,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2023-11-29 01:05:50,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 78 transitions, 226 flow. Second operand has 8 states, 8 states have (on average 30.125) internal successors, (241), 8 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:50,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:50,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2023-11-29 01:05:50,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:51,143 INFO L124 PetriNetUnfolderBase]: 2265/4717 cut-off events. [2023-11-29 01:05:51,143 INFO L125 PetriNetUnfolderBase]: For 2960/2960 co-relation queries the response was YES. [2023-11-29 01:05:51,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10326 conditions, 4717 events. 2265/4717 cut-off events. For 2960/2960 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 30796 event pairs, 461 based on Foata normal form. 22/4320 useless extension candidates. Maximal degree in co-relation 10315. Up to 2509 conditions per place. [2023-11-29 01:05:51,161 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 131 selfloop transitions, 8 changer transitions 3/167 dead transitions. [2023-11-29 01:05:51,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 167 transitions, 894 flow [2023-11-29 01:05:51,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:05:51,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:05:51,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 378 transitions. [2023-11-29 01:05:51,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2023-11-29 01:05:51,164 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 378 transitions. [2023-11-29 01:05:51,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 378 transitions. [2023-11-29 01:05:51,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:51,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 378 transitions. [2023-11-29 01:05:51,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 42.0) internal successors, (378), 9 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:51,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:51,168 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:51,168 INFO L175 Difference]: Start difference. First operand has 88 places, 78 transitions, 226 flow. Second operand 9 states and 378 transitions. [2023-11-29 01:05:51,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 167 transitions, 894 flow [2023-11-29 01:05:51,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 167 transitions, 834 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:05:51,173 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 227 flow [2023-11-29 01:05:51,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=227, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2023-11-29 01:05:51,174 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 13 predicate places. [2023-11-29 01:05:51,174 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 227 flow [2023-11-29 01:05:51,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.125) internal successors, (241), 8 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:51,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:51,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:51,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:05:51,175 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:51,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:51,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1171293438, now seen corresponding path program 1 times [2023-11-29 01:05:51,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:51,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112414306] [2023-11-29 01:05:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:51,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:51,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:51,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112414306] [2023-11-29 01:05:51,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112414306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:51,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:51,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:05:51,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69978080] [2023-11-29 01:05:51,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:51,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:05:51,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:51,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:05:51,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:05:51,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 87 [2023-11-29 01:05:51,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:51,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:51,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 87 [2023-11-29 01:05:51,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:51,805 INFO L124 PetriNetUnfolderBase]: 2871/5882 cut-off events. [2023-11-29 01:05:51,806 INFO L125 PetriNetUnfolderBase]: For 2620/2630 co-relation queries the response was YES. [2023-11-29 01:05:51,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12757 conditions, 5882 events. 2871/5882 cut-off events. For 2620/2630 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 40512 event pairs, 1566 based on Foata normal form. 144/5633 useless extension candidates. Maximal degree in co-relation 12745. Up to 3705 conditions per place. [2023-11-29 01:05:51,829 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 94 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2023-11-29 01:05:51,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 122 transitions, 576 flow [2023-11-29 01:05:51,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:05:51,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:05:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 221 transitions. [2023-11-29 01:05:51,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6350574712643678 [2023-11-29 01:05:51,831 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 221 transitions. [2023-11-29 01:05:51,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 221 transitions. [2023-11-29 01:05:51,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:51,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 221 transitions. [2023-11-29 01:05:51,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:51,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:51,833 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:51,833 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 227 flow. Second operand 4 states and 221 transitions. [2023-11-29 01:05:51,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 122 transitions, 576 flow [2023-11-29 01:05:51,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 122 transitions, 560 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 01:05:51,838 INFO L231 Difference]: Finished difference. Result has 91 places, 79 transitions, 242 flow [2023-11-29 01:05:51,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=91, PETRI_TRANSITIONS=79} [2023-11-29 01:05:51,839 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2023-11-29 01:05:51,839 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 79 transitions, 242 flow [2023-11-29 01:05:51,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:51,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:51,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:51,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:05:51,840 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:51,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:51,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1951344094, now seen corresponding path program 1 times [2023-11-29 01:05:51,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:51,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715894732] [2023-11-29 01:05:51,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:51,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:52,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:52,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715894732] [2023-11-29 01:05:52,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715894732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:52,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:52,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:05:52,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379779374] [2023-11-29 01:05:52,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:52,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:05:52,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:52,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:05:52,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:05:52,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 87 [2023-11-29 01:05:52,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 79 transitions, 242 flow. Second operand has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:52,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:52,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 87 [2023-11-29 01:05:52,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:53,320 INFO L124 PetriNetUnfolderBase]: 2867/6001 cut-off events. [2023-11-29 01:05:53,320 INFO L125 PetriNetUnfolderBase]: For 2621/2687 co-relation queries the response was YES. [2023-11-29 01:05:53,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13498 conditions, 6001 events. 2867/6001 cut-off events. For 2621/2687 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 42026 event pairs, 501 based on Foata normal form. 44/5666 useless extension candidates. Maximal degree in co-relation 13483. Up to 2591 conditions per place. [2023-11-29 01:05:53,341 INFO L140 encePairwiseOnDemand]: 72/87 looper letters, 149 selfloop transitions, 14 changer transitions 3/193 dead transitions. [2023-11-29 01:05:53,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 193 transitions, 1000 flow [2023-11-29 01:05:53,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:05:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:05:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 464 transitions. [2023-11-29 01:05:53,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-11-29 01:05:53,344 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 464 transitions. [2023-11-29 01:05:53,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 464 transitions. [2023-11-29 01:05:53,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:53,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 464 transitions. [2023-11-29 01:05:53,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 46.4) internal successors, (464), 10 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:53,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:53,347 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:53,347 INFO L175 Difference]: Start difference. First operand has 91 places, 79 transitions, 242 flow. Second operand 10 states and 464 transitions. [2023-11-29 01:05:53,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 193 transitions, 1000 flow [2023-11-29 01:05:53,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 193 transitions, 997 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:05:53,354 INFO L231 Difference]: Finished difference. Result has 102 places, 86 transitions, 313 flow [2023-11-29 01:05:53,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=313, PETRI_PLACES=102, PETRI_TRANSITIONS=86} [2023-11-29 01:05:53,354 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 23 predicate places. [2023-11-29 01:05:53,355 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 86 transitions, 313 flow [2023-11-29 01:05:53,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:53,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:53,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:53,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:05:53,355 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:53,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:53,356 INFO L85 PathProgramCache]: Analyzing trace with hash 362125601, now seen corresponding path program 1 times [2023-11-29 01:05:53,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:53,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450964158] [2023-11-29 01:05:53,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:53,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:53,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:53,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450964158] [2023-11-29 01:05:53,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450964158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:53,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:53,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:05:53,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328131234] [2023-11-29 01:05:53,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:53,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:05:53,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:53,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:05:53,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:05:53,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 87 [2023-11-29 01:05:53,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 86 transitions, 313 flow. Second operand has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:53,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:53,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 87 [2023-11-29 01:05:53,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:54,742 INFO L124 PetriNetUnfolderBase]: 2867/6001 cut-off events. [2023-11-29 01:05:54,742 INFO L125 PetriNetUnfolderBase]: For 3586/3652 co-relation queries the response was YES. [2023-11-29 01:05:54,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14720 conditions, 6001 events. 2867/6001 cut-off events. For 3586/3652 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 41979 event pairs, 501 based on Foata normal form. 44/5874 useless extension candidates. Maximal degree in co-relation 14703. Up to 2743 conditions per place. [2023-11-29 01:05:54,766 INFO L140 encePairwiseOnDemand]: 72/87 looper letters, 149 selfloop transitions, 14 changer transitions 3/193 dead transitions. [2023-11-29 01:05:54,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 193 transitions, 1062 flow [2023-11-29 01:05:54,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:05:54,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:05:54,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 463 transitions. [2023-11-29 01:05:54,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532183908045977 [2023-11-29 01:05:54,769 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 463 transitions. [2023-11-29 01:05:54,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 463 transitions. [2023-11-29 01:05:54,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:54,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 463 transitions. [2023-11-29 01:05:54,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 46.3) internal successors, (463), 10 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:54,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:54,773 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:54,773 INFO L175 Difference]: Start difference. First operand has 102 places, 86 transitions, 313 flow. Second operand 10 states and 463 transitions. [2023-11-29 01:05:54,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 193 transitions, 1062 flow [2023-11-29 01:05:54,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 193 transitions, 1050 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 01:05:54,788 INFO L231 Difference]: Finished difference. Result has 107 places, 86 transitions, 339 flow [2023-11-29 01:05:54,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=339, PETRI_PLACES=107, PETRI_TRANSITIONS=86} [2023-11-29 01:05:54,789 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 28 predicate places. [2023-11-29 01:05:54,789 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 86 transitions, 339 flow [2023-11-29 01:05:54,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:54,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:54,790 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:54,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:05:54,790 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:54,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:54,790 INFO L85 PathProgramCache]: Analyzing trace with hash -920033484, now seen corresponding path program 1 times [2023-11-29 01:05:54,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:54,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838075838] [2023-11-29 01:05:54,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:54,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:54,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:54,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838075838] [2023-11-29 01:05:54,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838075838] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:05:54,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012295777] [2023-11-29 01:05:54,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:54,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:54,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:54,884 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:54,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:05:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:55,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:05:55,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:55,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:05:55,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012295777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:55,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:05:55,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 01:05:55,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873001788] [2023-11-29 01:05:55,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:55,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:05:55,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:55,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:05:55,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:05:55,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 87 [2023-11-29 01:05:55,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 86 transitions, 339 flow. Second operand has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:55,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:55,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 87 [2023-11-29 01:05:55,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:55,904 INFO L124 PetriNetUnfolderBase]: 2838/5855 cut-off events. [2023-11-29 01:05:55,904 INFO L125 PetriNetUnfolderBase]: For 4330/4330 co-relation queries the response was YES. [2023-11-29 01:05:55,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15015 conditions, 5855 events. 2838/5855 cut-off events. For 4330/4330 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 40043 event pairs, 343 based on Foata normal form. 150/5820 useless extension candidates. Maximal degree in co-relation 14996. Up to 2610 conditions per place. [2023-11-29 01:05:55,929 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 126 selfloop transitions, 5 changer transitions 0/156 dead transitions. [2023-11-29 01:05:55,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 156 transitions, 894 flow [2023-11-29 01:05:55,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:05:55,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:05:55,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 304 transitions. [2023-11-29 01:05:55,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5823754789272031 [2023-11-29 01:05:55,931 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 304 transitions. [2023-11-29 01:05:55,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 304 transitions. [2023-11-29 01:05:55,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:55,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 304 transitions. [2023-11-29 01:05:55,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 50.666666666666664) internal successors, (304), 6 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:55,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:55,934 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:55,934 INFO L175 Difference]: Start difference. First operand has 107 places, 86 transitions, 339 flow. Second operand 6 states and 304 transitions. [2023-11-29 01:05:55,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 156 transitions, 894 flow [2023-11-29 01:05:55,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 156 transitions, 875 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 01:05:55,945 INFO L231 Difference]: Finished difference. Result has 104 places, 84 transitions, 327 flow [2023-11-29 01:05:55,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=327, PETRI_PLACES=104, PETRI_TRANSITIONS=84} [2023-11-29 01:05:55,946 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 25 predicate places. [2023-11-29 01:05:55,946 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 84 transitions, 327 flow [2023-11-29 01:05:55,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:55,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:55,947 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:55,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:05:56,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:56,147 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:56,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:56,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1543733894, now seen corresponding path program 1 times [2023-11-29 01:05:56,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:56,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334432403] [2023-11-29 01:05:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:56,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:56,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:05:56,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:56,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334432403] [2023-11-29 01:05:56,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334432403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:56,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:56,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:05:56,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440269271] [2023-11-29 01:05:56,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:56,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:05:56,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:56,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:05:56,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:05:56,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 87 [2023-11-29 01:05:56,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 84 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:56,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:56,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 87 [2023-11-29 01:05:56,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:56,809 INFO L124 PetriNetUnfolderBase]: 2798/5717 cut-off events. [2023-11-29 01:05:56,809 INFO L125 PetriNetUnfolderBase]: For 4545/4565 co-relation queries the response was YES. [2023-11-29 01:05:56,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14761 conditions, 5717 events. 2798/5717 cut-off events. For 4545/4565 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 38600 event pairs, 761 based on Foata normal form. 150/5720 useless extension candidates. Maximal degree in co-relation 14741. Up to 2857 conditions per place. [2023-11-29 01:05:56,832 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 87 selfloop transitions, 6 changer transitions 0/117 dead transitions. [2023-11-29 01:05:56,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 117 transitions, 635 flow [2023-11-29 01:05:56,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:05:56,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:05:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2023-11-29 01:05:56,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5775862068965517 [2023-11-29 01:05:56,833 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 201 transitions. [2023-11-29 01:05:56,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 201 transitions. [2023-11-29 01:05:56,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:56,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 201 transitions. [2023-11-29 01:05:56,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:56,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:56,835 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:56,835 INFO L175 Difference]: Start difference. First operand has 104 places, 84 transitions, 327 flow. Second operand 4 states and 201 transitions. [2023-11-29 01:05:56,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 117 transitions, 635 flow [2023-11-29 01:05:56,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 117 transitions, 626 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-29 01:05:56,847 INFO L231 Difference]: Finished difference. Result has 102 places, 83 transitions, 330 flow [2023-11-29 01:05:56,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2023-11-29 01:05:56,847 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 23 predicate places. [2023-11-29 01:05:56,848 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 330 flow [2023-11-29 01:05:56,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:56,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:56,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:56,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:05:56,848 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:56,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:56,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1724848725, now seen corresponding path program 1 times [2023-11-29 01:05:56,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:56,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924897038] [2023-11-29 01:05:56,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:56,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:56,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:56,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:56,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924897038] [2023-11-29 01:05:56,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924897038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:56,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:56,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:05:56,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263769428] [2023-11-29 01:05:56,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:56,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:05:56,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:56,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:05:56,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:05:56,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 87 [2023-11-29 01:05:56,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 83 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:56,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:56,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 87 [2023-11-29 01:05:56,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:57,416 INFO L124 PetriNetUnfolderBase]: 1783/4056 cut-off events. [2023-11-29 01:05:57,416 INFO L125 PetriNetUnfolderBase]: For 4137/4137 co-relation queries the response was YES. [2023-11-29 01:05:57,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10802 conditions, 4056 events. 1783/4056 cut-off events. For 4137/4137 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 26715 event pairs, 535 based on Foata normal form. 168/4137 useless extension candidates. Maximal degree in co-relation 10783. Up to 1994 conditions per place. [2023-11-29 01:05:57,433 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 67 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2023-11-29 01:05:57,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 99 transitions, 545 flow [2023-11-29 01:05:57,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:05:57,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:05:57,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2023-11-29 01:05:57,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2023-11-29 01:05:57,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 168 transitions. [2023-11-29 01:05:57,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 168 transitions. [2023-11-29 01:05:57,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:57,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 168 transitions. [2023-11-29 01:05:57,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:57,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:57,437 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:57,437 INFO L175 Difference]: Start difference. First operand has 102 places, 83 transitions, 330 flow. Second operand 3 states and 168 transitions. [2023-11-29 01:05:57,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 99 transitions, 545 flow [2023-11-29 01:05:57,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 526 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-29 01:05:57,447 INFO L231 Difference]: Finished difference. Result has 102 places, 81 transitions, 312 flow [2023-11-29 01:05:57,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=102, PETRI_TRANSITIONS=81} [2023-11-29 01:05:57,447 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 23 predicate places. [2023-11-29 01:05:57,447 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 81 transitions, 312 flow [2023-11-29 01:05:57,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:57,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:57,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:57,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:05:57,448 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:57,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:57,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1259548614, now seen corresponding path program 1 times [2023-11-29 01:05:57,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:57,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352494811] [2023-11-29 01:05:57,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:57,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:58,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:58,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352494811] [2023-11-29 01:05:58,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352494811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:58,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:58,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:05:58,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336379952] [2023-11-29 01:05:58,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:58,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:05:58,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:05:58,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:05:58,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 87 [2023-11-29 01:05:58,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 81 transitions, 312 flow. Second operand has 11 states, 11 states have (on average 31.454545454545453) internal successors, (346), 11 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:58,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:58,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 87 [2023-11-29 01:05:58,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:59,890 INFO L124 PetriNetUnfolderBase]: 2665/5632 cut-off events. [2023-11-29 01:05:59,890 INFO L125 PetriNetUnfolderBase]: For 5242/5242 co-relation queries the response was YES. [2023-11-29 01:05:59,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15463 conditions, 5632 events. 2665/5632 cut-off events. For 5242/5242 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 35925 event pairs, 351 based on Foata normal form. 30/5512 useless extension candidates. Maximal degree in co-relation 15443. Up to 1221 conditions per place. [2023-11-29 01:05:59,916 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 174 selfloop transitions, 17 changer transitions 3/215 dead transitions. [2023-11-29 01:05:59,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 215 transitions, 1279 flow [2023-11-29 01:05:59,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:05:59,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 01:05:59,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 507 transitions. [2023-11-29 01:05:59,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48563218390804597 [2023-11-29 01:05:59,919 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 507 transitions. [2023-11-29 01:05:59,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 507 transitions. [2023-11-29 01:05:59,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:59,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 507 transitions. [2023-11-29 01:05:59,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 42.25) internal successors, (507), 12 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:59,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 87.0) internal successors, (1131), 13 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:59,923 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 87.0) internal successors, (1131), 13 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:59,923 INFO L175 Difference]: Start difference. First operand has 102 places, 81 transitions, 312 flow. Second operand 12 states and 507 transitions. [2023-11-29 01:05:59,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 215 transitions, 1279 flow [2023-11-29 01:05:59,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 215 transitions, 1259 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:05:59,937 INFO L231 Difference]: Finished difference. Result has 118 places, 90 transitions, 417 flow [2023-11-29 01:05:59,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=417, PETRI_PLACES=118, PETRI_TRANSITIONS=90} [2023-11-29 01:05:59,938 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 39 predicate places. [2023-11-29 01:05:59,938 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 90 transitions, 417 flow [2023-11-29 01:05:59,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.454545454545453) internal successors, (346), 11 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:59,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:59,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:59,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 01:05:59,938 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:05:59,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:59,939 INFO L85 PathProgramCache]: Analyzing trace with hash 471556404, now seen corresponding path program 1 times [2023-11-29 01:05:59,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:59,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672294433] [2023-11-29 01:05:59,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:59,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:00,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:00,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672294433] [2023-11-29 01:06:00,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672294433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:00,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:00,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:06:00,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342186014] [2023-11-29 01:06:00,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:00,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:06:00,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:00,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:06:00,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:06:00,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 01:06:00,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 90 transitions, 417 flow. Second operand has 7 states, 7 states have (on average 37.857142857142854) internal successors, (265), 7 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:00,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:06:00,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 01:06:00,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:06:01,030 INFO L124 PetriNetUnfolderBase]: 2467/5410 cut-off events. [2023-11-29 01:06:01,030 INFO L125 PetriNetUnfolderBase]: For 6584/6584 co-relation queries the response was YES. [2023-11-29 01:06:01,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15393 conditions, 5410 events. 2467/5410 cut-off events. For 6584/6584 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 35548 event pairs, 1395 based on Foata normal form. 38/5336 useless extension candidates. Maximal degree in co-relation 15367. Up to 2831 conditions per place. [2023-11-29 01:06:01,054 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 65 selfloop transitions, 16 changer transitions 0/106 dead transitions. [2023-11-29 01:06:01,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 106 transitions, 651 flow [2023-11-29 01:06:01,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:06:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:06:01,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2023-11-29 01:06:01,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241379310344828 [2023-11-29 01:06:01,056 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 228 transitions. [2023-11-29 01:06:01,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 228 transitions. [2023-11-29 01:06:01,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:06:01,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 228 transitions. [2023-11-29 01:06:01,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:01,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:01,057 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:01,057 INFO L175 Difference]: Start difference. First operand has 118 places, 90 transitions, 417 flow. Second operand 5 states and 228 transitions. [2023-11-29 01:06:01,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 106 transitions, 651 flow [2023-11-29 01:06:01,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 106 transitions, 635 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-29 01:06:01,072 INFO L231 Difference]: Finished difference. Result has 116 places, 89 transitions, 431 flow [2023-11-29 01:06:01,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=431, PETRI_PLACES=116, PETRI_TRANSITIONS=89} [2023-11-29 01:06:01,072 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 37 predicate places. [2023-11-29 01:06:01,072 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 89 transitions, 431 flow [2023-11-29 01:06:01,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.857142857142854) internal successors, (265), 7 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:01,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:06:01,073 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:06:01,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 01:06:01,073 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:06:01,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:01,073 INFO L85 PathProgramCache]: Analyzing trace with hash 29084814, now seen corresponding path program 1 times [2023-11-29 01:06:01,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:01,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377409450] [2023-11-29 01:06:01,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:01,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:01,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:01,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377409450] [2023-11-29 01:06:01,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377409450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:01,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:01,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:06:01,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019786228] [2023-11-29 01:06:01,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:01,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:06:01,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:01,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:06:01,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:06:01,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 87 [2023-11-29 01:06:01,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 89 transitions, 431 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:01,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:06:01,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 87 [2023-11-29 01:06:01,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:06:01,749 INFO L124 PetriNetUnfolderBase]: 2147/4753 cut-off events. [2023-11-29 01:06:01,749 INFO L125 PetriNetUnfolderBase]: For 6337/6337 co-relation queries the response was YES. [2023-11-29 01:06:01,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13412 conditions, 4753 events. 2147/4753 cut-off events. For 6337/6337 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 30745 event pairs, 1325 based on Foata normal form. 30/4669 useless extension candidates. Maximal degree in co-relation 13386. Up to 2488 conditions per place. [2023-11-29 01:06:01,769 INFO L140 encePairwiseOnDemand]: 84/87 looper letters, 79 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-11-29 01:06:01,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 107 transitions, 665 flow [2023-11-29 01:06:01,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:06:01,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:06:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2023-11-29 01:06:01,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2023-11-29 01:06:01,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 168 transitions. [2023-11-29 01:06:01,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 168 transitions. [2023-11-29 01:06:01,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:06:01,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 168 transitions. [2023-11-29 01:06:01,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:01,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:01,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:01,772 INFO L175 Difference]: Start difference. First operand has 116 places, 89 transitions, 431 flow. Second operand 3 states and 168 transitions. [2023-11-29 01:06:01,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 107 transitions, 665 flow [2023-11-29 01:06:01,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 107 transitions, 632 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 01:06:01,784 INFO L231 Difference]: Finished difference. Result has 114 places, 87 transitions, 394 flow [2023-11-29 01:06:01,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=114, PETRI_TRANSITIONS=87} [2023-11-29 01:06:01,784 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 35 predicate places. [2023-11-29 01:06:01,784 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 87 transitions, 394 flow [2023-11-29 01:06:01,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:01,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:06:01,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:06:01,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 01:06:01,785 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:06:01,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:01,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1272835695, now seen corresponding path program 1 times [2023-11-29 01:06:01,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:01,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308074988] [2023-11-29 01:06:01,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:01,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:02,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:02,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:02,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308074988] [2023-11-29 01:06:02,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308074988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:02,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:02,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:06:02,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626196218] [2023-11-29 01:06:02,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:02,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:06:02,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:02,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:06:02,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:06:02,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2023-11-29 01:06:02,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 87 transitions, 394 flow. Second operand has 11 states, 11 states have (on average 32.63636363636363) internal successors, (359), 11 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:02,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:06:02,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2023-11-29 01:06:02,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:06:03,678 INFO L124 PetriNetUnfolderBase]: 2925/6160 cut-off events. [2023-11-29 01:06:03,678 INFO L125 PetriNetUnfolderBase]: For 7194/7194 co-relation queries the response was YES. [2023-11-29 01:06:03,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17352 conditions, 6160 events. 2925/6160 cut-off events. For 7194/7194 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 40728 event pairs, 485 based on Foata normal form. 28/6102 useless extension candidates. Maximal degree in co-relation 17325. Up to 1819 conditions per place. [2023-11-29 01:06:03,703 INFO L140 encePairwiseOnDemand]: 71/87 looper letters, 180 selfloop transitions, 19 changer transitions 8/229 dead transitions. [2023-11-29 01:06:03,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 229 transitions, 1434 flow [2023-11-29 01:06:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:06:03,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 01:06:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 618 transitions. [2023-11-29 01:06:03,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735632183908046 [2023-11-29 01:06:03,706 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 618 transitions. [2023-11-29 01:06:03,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 618 transitions. [2023-11-29 01:06:03,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:06:03,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 618 transitions. [2023-11-29 01:06:03,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 41.2) internal successors, (618), 15 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:03,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:03,710 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:03,710 INFO L175 Difference]: Start difference. First operand has 114 places, 87 transitions, 394 flow. Second operand 15 states and 618 transitions. [2023-11-29 01:06:03,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 229 transitions, 1434 flow [2023-11-29 01:06:03,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 229 transitions, 1424 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:06:03,725 INFO L231 Difference]: Finished difference. Result has 131 places, 97 transitions, 520 flow [2023-11-29 01:06:03,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=520, PETRI_PLACES=131, PETRI_TRANSITIONS=97} [2023-11-29 01:06:03,725 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 52 predicate places. [2023-11-29 01:06:03,725 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 97 transitions, 520 flow [2023-11-29 01:06:03,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.63636363636363) internal successors, (359), 11 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:03,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:06:03,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:06:03,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 01:06:03,726 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:06:03,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:03,726 INFO L85 PathProgramCache]: Analyzing trace with hash -700348446, now seen corresponding path program 1 times [2023-11-29 01:06:03,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:03,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647847799] [2023-11-29 01:06:03,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:03,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:04,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:04,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647847799] [2023-11-29 01:06:04,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647847799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:04,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:04,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:06:04,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359898798] [2023-11-29 01:06:04,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:04,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:06:04,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:04,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:06:04,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:06:04,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 87 [2023-11-29 01:06:04,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 97 transitions, 520 flow. Second operand has 8 states, 8 states have (on average 35.5) internal successors, (284), 8 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:04,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:06:04,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 87 [2023-11-29 01:06:04,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:06:05,237 INFO L124 PetriNetUnfolderBase]: 2379/5104 cut-off events. [2023-11-29 01:06:05,237 INFO L125 PetriNetUnfolderBase]: For 7034/7034 co-relation queries the response was YES. [2023-11-29 01:06:05,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14830 conditions, 5104 events. 2379/5104 cut-off events. For 7034/7034 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 32301 event pairs, 711 based on Foata normal form. 36/5100 useless extension candidates. Maximal degree in co-relation 14799. Up to 2773 conditions per place. [2023-11-29 01:06:05,261 INFO L140 encePairwiseOnDemand]: 76/87 looper letters, 124 selfloop transitions, 10 changer transitions 10/169 dead transitions. [2023-11-29 01:06:05,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 169 transitions, 1099 flow [2023-11-29 01:06:05,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:06:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:06:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 398 transitions. [2023-11-29 01:06:05,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508301404853129 [2023-11-29 01:06:05,262 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 398 transitions. [2023-11-29 01:06:05,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 398 transitions. [2023-11-29 01:06:05,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:06:05,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 398 transitions. [2023-11-29 01:06:05,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 44.22222222222222) internal successors, (398), 9 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:05,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:05,264 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:05,264 INFO L175 Difference]: Start difference. First operand has 131 places, 97 transitions, 520 flow. Second operand 9 states and 398 transitions. [2023-11-29 01:06:05,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 169 transitions, 1099 flow [2023-11-29 01:06:05,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 169 transitions, 1061 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-11-29 01:06:05,280 INFO L231 Difference]: Finished difference. Result has 129 places, 93 transitions, 463 flow [2023-11-29 01:06:05,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=463, PETRI_PLACES=129, PETRI_TRANSITIONS=93} [2023-11-29 01:06:05,281 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 50 predicate places. [2023-11-29 01:06:05,281 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 93 transitions, 463 flow [2023-11-29 01:06:05,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.5) internal successors, (284), 8 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:05,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:06:05,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:06:05,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 01:06:05,282 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:06:05,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:05,282 INFO L85 PathProgramCache]: Analyzing trace with hash 672187040, now seen corresponding path program 1 times [2023-11-29 01:06:05,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:05,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297115047] [2023-11-29 01:06:05,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:05,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:06,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:06,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297115047] [2023-11-29 01:06:06,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297115047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:06,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:06,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:06:06,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834024502] [2023-11-29 01:06:06,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:06,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:06:06,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:06,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:06:06,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:06:06,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2023-11-29 01:06:06,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 93 transitions, 463 flow. Second operand has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:06,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:06:06,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2023-11-29 01:06:06,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:06:07,016 INFO L124 PetriNetUnfolderBase]: 2427/5142 cut-off events. [2023-11-29 01:06:07,016 INFO L125 PetriNetUnfolderBase]: For 6562/6562 co-relation queries the response was YES. [2023-11-29 01:06:07,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14806 conditions, 5142 events. 2427/5142 cut-off events. For 6562/6562 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 32046 event pairs, 463 based on Foata normal form. 28/5140 useless extension candidates. Maximal degree in co-relation 14776. Up to 2011 conditions per place. [2023-11-29 01:06:07,037 INFO L140 encePairwiseOnDemand]: 73/87 looper letters, 145 selfloop transitions, 13 changer transitions 21/201 dead transitions. [2023-11-29 01:06:07,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 201 transitions, 1285 flow [2023-11-29 01:06:07,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:06:07,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 01:06:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 503 transitions. [2023-11-29 01:06:07,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818007662835249 [2023-11-29 01:06:07,039 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 503 transitions. [2023-11-29 01:06:07,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 503 transitions. [2023-11-29 01:06:07,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:06:07,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 503 transitions. [2023-11-29 01:06:07,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 41.916666666666664) internal successors, (503), 12 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:07,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 87.0) internal successors, (1131), 13 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:07,041 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 87.0) internal successors, (1131), 13 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:07,041 INFO L175 Difference]: Start difference. First operand has 129 places, 93 transitions, 463 flow. Second operand 12 states and 503 transitions. [2023-11-29 01:06:07,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 201 transitions, 1285 flow [2023-11-29 01:06:07,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 201 transitions, 1263 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 01:06:07,054 INFO L231 Difference]: Finished difference. Result has 132 places, 92 transitions, 463 flow [2023-11-29 01:06:07,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=463, PETRI_PLACES=132, PETRI_TRANSITIONS=92} [2023-11-29 01:06:07,055 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 53 predicate places. [2023-11-29 01:06:07,055 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 92 transitions, 463 flow [2023-11-29 01:06:07,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:07,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:06:07,055 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:06:07,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 01:06:07,055 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:06:07,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:07,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1174694143, now seen corresponding path program 1 times [2023-11-29 01:06:07,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:07,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295318703] [2023-11-29 01:06:07,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:07,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:07,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:07,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:07,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295318703] [2023-11-29 01:06:07,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295318703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:07,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:07,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 01:06:07,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585959983] [2023-11-29 01:06:07,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:07,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:06:07,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:07,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:06:07,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:06:07,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 87 [2023-11-29 01:06:07,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 92 transitions, 463 flow. Second operand has 11 states, 11 states have (on average 35.18181818181818) internal successors, (387), 11 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:07,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:06:07,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 87 [2023-11-29 01:06:07,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:06:08,694 INFO L124 PetriNetUnfolderBase]: 1801/3918 cut-off events. [2023-11-29 01:06:08,694 INFO L125 PetriNetUnfolderBase]: For 5294/5298 co-relation queries the response was YES. [2023-11-29 01:06:08,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11339 conditions, 3918 events. 1801/3918 cut-off events. For 5294/5298 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 23041 event pairs, 271 based on Foata normal form. 28/3920 useless extension candidates. Maximal degree in co-relation 11309. Up to 973 conditions per place. [2023-11-29 01:06:08,707 INFO L140 encePairwiseOnDemand]: 72/87 looper letters, 142 selfloop transitions, 15 changer transitions 22/203 dead transitions. [2023-11-29 01:06:08,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 203 transitions, 1270 flow [2023-11-29 01:06:08,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:06:08,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:06:08,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 564 transitions. [2023-11-29 01:06:08,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4986737400530504 [2023-11-29 01:06:08,709 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 564 transitions. [2023-11-29 01:06:08,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 564 transitions. [2023-11-29 01:06:08,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:06:08,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 564 transitions. [2023-11-29 01:06:08,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 43.38461538461539) internal successors, (564), 13 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:08,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 87.0) internal successors, (1218), 14 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:08,711 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 87.0) internal successors, (1218), 14 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:08,711 INFO L175 Difference]: Start difference. First operand has 132 places, 92 transitions, 463 flow. Second operand 13 states and 564 transitions. [2023-11-29 01:06:08,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 203 transitions, 1270 flow [2023-11-29 01:06:08,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 203 transitions, 1230 flow, removed 2 selfloop flow, removed 17 redundant places. [2023-11-29 01:06:08,721 INFO L231 Difference]: Finished difference. Result has 128 places, 85 transitions, 400 flow [2023-11-29 01:06:08,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=400, PETRI_PLACES=128, PETRI_TRANSITIONS=85} [2023-11-29 01:06:08,721 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 49 predicate places. [2023-11-29 01:06:08,721 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 85 transitions, 400 flow [2023-11-29 01:06:08,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.18181818181818) internal successors, (387), 11 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:08,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:06:08,722 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:06:08,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 01:06:08,722 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:06:08,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash 173924005, now seen corresponding path program 1 times [2023-11-29 01:06:08,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:08,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940400091] [2023-11-29 01:06:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:08,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:09,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:09,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:09,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940400091] [2023-11-29 01:06:09,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940400091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:09,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:09,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:06:09,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541595880] [2023-11-29 01:06:09,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:09,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:06:09,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:09,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:06:09,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:06:09,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 87 [2023-11-29 01:06:09,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 85 transitions, 400 flow. Second operand has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:09,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:06:09,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 87 [2023-11-29 01:06:09,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:06:09,821 INFO L124 PetriNetUnfolderBase]: 1995/4310 cut-off events. [2023-11-29 01:06:09,821 INFO L125 PetriNetUnfolderBase]: For 4805/4805 co-relation queries the response was YES. [2023-11-29 01:06:09,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12311 conditions, 4310 events. 1995/4310 cut-off events. For 4805/4805 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 25854 event pairs, 455 based on Foata normal form. 12/4298 useless extension candidates. Maximal degree in co-relation 12281. Up to 1877 conditions per place. [2023-11-29 01:06:09,837 INFO L140 encePairwiseOnDemand]: 75/87 looper letters, 108 selfloop transitions, 19 changer transitions 0/148 dead transitions. [2023-11-29 01:06:09,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 148 transitions, 921 flow [2023-11-29 01:06:09,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:06:09,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 01:06:09,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 336 transitions. [2023-11-29 01:06:09,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2023-11-29 01:06:09,838 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 336 transitions. [2023-11-29 01:06:09,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 336 transitions. [2023-11-29 01:06:09,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:06:09,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 336 transitions. [2023-11-29 01:06:09,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 42.0) internal successors, (336), 8 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:09,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:09,840 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:09,841 INFO L175 Difference]: Start difference. First operand has 128 places, 85 transitions, 400 flow. Second operand 8 states and 336 transitions. [2023-11-29 01:06:09,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 148 transitions, 921 flow [2023-11-29 01:06:09,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 148 transitions, 893 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-29 01:06:09,853 INFO L231 Difference]: Finished difference. Result has 121 places, 87 transitions, 420 flow [2023-11-29 01:06:09,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=420, PETRI_PLACES=121, PETRI_TRANSITIONS=87} [2023-11-29 01:06:09,854 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 42 predicate places. [2023-11-29 01:06:09,854 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 87 transitions, 420 flow [2023-11-29 01:06:09,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:09,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:06:09,854 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:06:09,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 01:06:09,854 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:06:09,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:09,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1532935137, now seen corresponding path program 1 times [2023-11-29 01:06:09,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:09,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097215646] [2023-11-29 01:06:09,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:09,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:10,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:10,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097215646] [2023-11-29 01:06:10,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097215646] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:06:10,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593830670] [2023-11-29 01:06:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:10,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:10,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:10,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:10,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:06:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:11,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 01:06:11,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:11,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2023-11-29 01:06:11,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2023-11-29 01:06:11,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2023-11-29 01:06:11,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 44 [2023-11-29 01:06:11,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 48 [2023-11-29 01:06:11,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 53 [2023-11-29 01:06:12,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 134 [2023-11-29 01:06:12,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 348 treesize of output 285 [2023-11-29 01:06:13,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 626 treesize of output 527 [2023-11-29 01:06:14,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1279 treesize of output 1063 [2023-11-29 01:06:14,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:14,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:06:15,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:15,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593830670] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:06:15,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:06:15,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 34 [2023-11-29 01:06:15,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522071212] [2023-11-29 01:06:15,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:06:15,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 01:06:15,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:15,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 01:06:15,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1030, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 01:06:16,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 87 [2023-11-29 01:06:16,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 87 transitions, 420 flow. Second operand has 36 states, 36 states have (on average 28.75) internal successors, (1035), 36 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:16,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:06:16,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 87 [2023-11-29 01:06:16,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:06:23,075 INFO L124 PetriNetUnfolderBase]: 3119/6724 cut-off events. [2023-11-29 01:06:23,075 INFO L125 PetriNetUnfolderBase]: For 7189/7189 co-relation queries the response was YES. [2023-11-29 01:06:23,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18756 conditions, 6724 events. 3119/6724 cut-off events. For 7189/7189 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 39285 event pairs, 377 based on Foata normal form. 28/6720 useless extension candidates. Maximal degree in co-relation 18727. Up to 958 conditions per place. [2023-11-29 01:06:23,107 INFO L140 encePairwiseOnDemand]: 70/87 looper letters, 349 selfloop transitions, 40 changer transitions 33/444 dead transitions. [2023-11-29 01:06:23,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 444 transitions, 2838 flow [2023-11-29 01:06:23,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 01:06:23,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-29 01:06:23,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1308 transitions. [2023-11-29 01:06:23,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41762452107279696 [2023-11-29 01:06:23,111 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1308 transitions. [2023-11-29 01:06:23,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1308 transitions. [2023-11-29 01:06:23,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:06:23,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1308 transitions. [2023-11-29 01:06:23,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 36.333333333333336) internal successors, (1308), 36 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:23,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 87.0) internal successors, (3219), 37 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:23,121 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 87.0) internal successors, (3219), 37 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:23,121 INFO L175 Difference]: Start difference. First operand has 121 places, 87 transitions, 420 flow. Second operand 36 states and 1308 transitions. [2023-11-29 01:06:23,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 444 transitions, 2838 flow [2023-11-29 01:06:23,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 444 transitions, 2825 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 01:06:23,147 INFO L231 Difference]: Finished difference. Result has 162 places, 112 transitions, 720 flow [2023-11-29 01:06:23,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=720, PETRI_PLACES=162, PETRI_TRANSITIONS=112} [2023-11-29 01:06:23,148 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 83 predicate places. [2023-11-29 01:06:23,148 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 112 transitions, 720 flow [2023-11-29 01:06:23,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 28.75) internal successors, (1035), 36 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:23,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:06:23,149 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:06:23,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:06:23,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:23,349 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:06:23,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:23,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1011890022, now seen corresponding path program 1 times [2023-11-29 01:06:23,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:23,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486930459] [2023-11-29 01:06:23,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:23,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:24,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:24,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486930459] [2023-11-29 01:06:24,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486930459] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:06:24,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496883478] [2023-11-29 01:06:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:24,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:24,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:24,093 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:24,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:06:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:24,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-29 01:06:24,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:24,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-11-29 01:06:24,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-11-29 01:06:24,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-11-29 01:06:24,870 INFO L349 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2023-11-29 01:06:24,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2023-11-29 01:06:24,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-11-29 01:06:24,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:06:24,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:24,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:06:25,661 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2023-11-29 01:06:25,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 123 treesize of output 85 [2023-11-29 01:06:25,672 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:06:25,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 82 [2023-11-29 01:06:25,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 01:06:25,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:06:25,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2023-11-29 01:06:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:25,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496883478] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:06:25,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:06:25,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2023-11-29 01:06:25,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884560837] [2023-11-29 01:06:25,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:06:25,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 01:06:25,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:25,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 01:06:25,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:06:25,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 87 [2023-11-29 01:06:25,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 112 transitions, 720 flow. Second operand has 26 states, 26 states have (on average 31.23076923076923) internal successors, (812), 26 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:25,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:06:25,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 87 [2023-11-29 01:06:25,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:06:27,511 INFO L124 PetriNetUnfolderBase]: 3231/6872 cut-off events. [2023-11-29 01:06:27,511 INFO L125 PetriNetUnfolderBase]: For 8882/8882 co-relation queries the response was YES. [2023-11-29 01:06:27,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20123 conditions, 6872 events. 3231/6872 cut-off events. For 8882/8882 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 40308 event pairs, 1715 based on Foata normal form. 28/6862 useless extension candidates. Maximal degree in co-relation 20086. Up to 3395 conditions per place. [2023-11-29 01:06:27,549 INFO L140 encePairwiseOnDemand]: 71/87 looper letters, 85 selfloop transitions, 47 changer transitions 1/152 dead transitions. [2023-11-29 01:06:27,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 152 transitions, 1162 flow [2023-11-29 01:06:27,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:06:27,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:06:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 325 transitions. [2023-11-29 01:06:27,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41507024265644954 [2023-11-29 01:06:27,551 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 325 transitions. [2023-11-29 01:06:27,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 325 transitions. [2023-11-29 01:06:27,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:06:27,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 325 transitions. [2023-11-29 01:06:27,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:27,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:27,553 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:27,553 INFO L175 Difference]: Start difference. First operand has 162 places, 112 transitions, 720 flow. Second operand 9 states and 325 transitions. [2023-11-29 01:06:27,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 152 transitions, 1162 flow [2023-11-29 01:06:27,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 152 transitions, 1079 flow, removed 20 selfloop flow, removed 17 redundant places. [2023-11-29 01:06:27,577 INFO L231 Difference]: Finished difference. Result has 151 places, 111 transitions, 725 flow [2023-11-29 01:06:27,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=725, PETRI_PLACES=151, PETRI_TRANSITIONS=111} [2023-11-29 01:06:27,577 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 72 predicate places. [2023-11-29 01:06:27,577 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 111 transitions, 725 flow [2023-11-29 01:06:27,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 31.23076923076923) internal successors, (812), 26 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:27,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:06:27,641 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:06:27,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:06:27,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:27,842 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:06:27,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:27,842 INFO L85 PathProgramCache]: Analyzing trace with hash -170431005, now seen corresponding path program 1 times [2023-11-29 01:06:27,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:27,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061449697] [2023-11-29 01:06:27,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:27,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:28,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:28,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:28,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061449697] [2023-11-29 01:06:28,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061449697] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:06:28,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049593296] [2023-11-29 01:06:28,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:28,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:28,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:28,732 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:28,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:06:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:28,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-29 01:06:28,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:28,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2023-11-29 01:06:28,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2023-11-29 01:06:29,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2023-11-29 01:06:29,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 44 [2023-11-29 01:06:29,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 48 [2023-11-29 01:06:29,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 53 [2023-11-29 01:06:29,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 118 [2023-11-29 01:06:34,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 298 treesize of output 249 [2023-11-29 01:06:34,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 298 treesize of output 249 [2023-11-29 01:06:38,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 651 treesize of output 534 [2023-11-29 01:06:51,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1809 treesize of output 1480 [2023-11-29 01:07:03,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1801 treesize of output 1473 [2023-11-29 01:07:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:04,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:05,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:05,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049593296] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:07:05,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:07:05,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 36 [2023-11-29 01:07:05,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889305621] [2023-11-29 01:07:05,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:07:05,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 01:07:05,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:05,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 01:07:05,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1099, Unknown=5, NotChecked=0, Total=1406 [2023-11-29 01:07:09,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:07:13,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:07:17,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:07:21,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:07:25,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:07:25,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 87 [2023-11-29 01:07:25,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 111 transitions, 725 flow. Second operand has 38 states, 38 states have (on average 30.342105263157894) internal successors, (1153), 38 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:25,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:07:25,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 87 [2023-11-29 01:07:25,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:07:36,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:07:40,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:07:41,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:07:43,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:07:45,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:07:49,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:07:53,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:07:56,758 INFO L124 PetriNetUnfolderBase]: 4367/9152 cut-off events. [2023-11-29 01:07:56,758 INFO L125 PetriNetUnfolderBase]: For 12254/12254 co-relation queries the response was YES. [2023-11-29 01:07:56,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26781 conditions, 9152 events. 4367/9152 cut-off events. For 12254/12254 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 53783 event pairs, 735 based on Foata normal form. 52/9160 useless extension candidates. Maximal degree in co-relation 26747. Up to 1340 conditions per place. [2023-11-29 01:07:56,807 INFO L140 encePairwiseOnDemand]: 70/87 looper letters, 364 selfloop transitions, 69 changer transitions 37/488 dead transitions. [2023-11-29 01:07:56,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 488 transitions, 3437 flow [2023-11-29 01:07:56,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 01:07:56,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-11-29 01:07:56,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 1512 transitions. [2023-11-29 01:07:56,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238856181665265 [2023-11-29 01:07:56,810 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 1512 transitions. [2023-11-29 01:07:56,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 1512 transitions. [2023-11-29 01:07:56,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:07:56,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 1512 transitions. [2023-11-29 01:07:56,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 36.8780487804878) internal successors, (1512), 41 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:56,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 87.0) internal successors, (3654), 42 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:56,817 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 87.0) internal successors, (3654), 42 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:56,817 INFO L175 Difference]: Start difference. First operand has 151 places, 111 transitions, 725 flow. Second operand 41 states and 1512 transitions. [2023-11-29 01:07:56,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 488 transitions, 3437 flow [2023-11-29 01:07:56,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 488 transitions, 3306 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-29 01:07:56,844 INFO L231 Difference]: Finished difference. Result has 196 places, 143 transitions, 1138 flow [2023-11-29 01:07:56,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=1138, PETRI_PLACES=196, PETRI_TRANSITIONS=143} [2023-11-29 01:07:56,845 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 117 predicate places. [2023-11-29 01:07:56,845 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 143 transitions, 1138 flow [2023-11-29 01:07:56,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 30.342105263157894) internal successors, (1153), 38 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:56,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:07:56,846 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:56,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:07:57,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 01:07:57,046 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:07:57,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:57,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2010794244, now seen corresponding path program 1 times [2023-11-29 01:07:57,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:57,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090054739] [2023-11-29 01:07:57,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:57,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:58,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:58,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090054739] [2023-11-29 01:07:58,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090054739] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:07:58,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030683840] [2023-11-29 01:07:58,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:58,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:58,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:58,500 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:58,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:07:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:58,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-29 01:07:58,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:58,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:07:58,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:07:59,055 INFO L349 Elim1Store]: treesize reduction 36, result has 39.0 percent of original size [2023-11-29 01:07:59,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 46 [2023-11-29 01:07:59,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 26 [2023-11-29 01:07:59,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2023-11-29 01:07:59,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 01:07:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:59,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:59,736 INFO L349 Elim1Store]: treesize reduction 51, result has 52.3 percent of original size [2023-11-29 01:07:59,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 417 treesize of output 324 [2023-11-29 01:07:59,764 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:59,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 248 treesize of output 236 [2023-11-29 01:07:59,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2023-11-29 01:08:00,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:08:00,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 300 treesize of output 246 [2023-11-29 01:08:00,845 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:00,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030683840] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:08:00,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:08:00,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 32 [2023-11-29 01:08:00,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688009940] [2023-11-29 01:08:00,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:08:00,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 01:08:00,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:00,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 01:08:00,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2023-11-29 01:08:01,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 87 [2023-11-29 01:08:01,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 143 transitions, 1138 flow. Second operand has 32 states, 32 states have (on average 27.5625) internal successors, (882), 32 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:01,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:08:01,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 87 [2023-11-29 01:08:01,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:08:05,162 INFO L124 PetriNetUnfolderBase]: 4169/8740 cut-off events. [2023-11-29 01:08:05,162 INFO L125 PetriNetUnfolderBase]: For 14072/14072 co-relation queries the response was YES. [2023-11-29 01:08:05,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26158 conditions, 8740 events. 4169/8740 cut-off events. For 14072/14072 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 49622 event pairs, 257 based on Foata normal form. 48/8748 useless extension candidates. Maximal degree in co-relation 26112. Up to 1292 conditions per place. [2023-11-29 01:08:05,222 INFO L140 encePairwiseOnDemand]: 70/87 looper letters, 266 selfloop transitions, 80 changer transitions 25/388 dead transitions. [2023-11-29 01:08:05,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 388 transitions, 2899 flow [2023-11-29 01:08:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 01:08:05,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 01:08:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 991 transitions. [2023-11-29 01:08:05,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3674453096032629 [2023-11-29 01:08:05,224 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 991 transitions. [2023-11-29 01:08:05,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 991 transitions. [2023-11-29 01:08:05,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:08:05,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 991 transitions. [2023-11-29 01:08:05,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 31.967741935483872) internal successors, (991), 31 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:05,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 87.0) internal successors, (2784), 32 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:05,229 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 87.0) internal successors, (2784), 32 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:05,229 INFO L175 Difference]: Start difference. First operand has 196 places, 143 transitions, 1138 flow. Second operand 31 states and 991 transitions. [2023-11-29 01:08:05,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 388 transitions, 2899 flow [2023-11-29 01:08:05,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 388 transitions, 2798 flow, removed 29 selfloop flow, removed 22 redundant places. [2023-11-29 01:08:05,270 INFO L231 Difference]: Finished difference. Result has 197 places, 138 transitions, 1157 flow [2023-11-29 01:08:05,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1157, PETRI_PLACES=197, PETRI_TRANSITIONS=138} [2023-11-29 01:08:05,270 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 118 predicate places. [2023-11-29 01:08:05,271 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 138 transitions, 1157 flow [2023-11-29 01:08:05,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 27.5625) internal successors, (882), 32 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:05,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:08:05,271 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:08:05,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:08:05,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:05,472 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:08:05,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:05,472 INFO L85 PathProgramCache]: Analyzing trace with hash -956049316, now seen corresponding path program 1 times [2023-11-29 01:08:05,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:05,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411311534] [2023-11-29 01:08:05,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:05,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:08:06,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:06,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411311534] [2023-11-29 01:08:06,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411311534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:08:06,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983784259] [2023-11-29 01:08:06,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:06,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:06,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:06,227 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:06,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:08:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:06,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 01:08:06,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:06,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:08:06,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:08:06,724 INFO L349 Elim1Store]: treesize reduction 36, result has 39.0 percent of original size [2023-11-29 01:08:06,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 57 [2023-11-29 01:08:06,846 INFO L349 Elim1Store]: treesize reduction 24, result has 45.5 percent of original size [2023-11-29 01:08:06,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 57 [2023-11-29 01:08:06,963 INFO L349 Elim1Store]: treesize reduction 24, result has 45.5 percent of original size [2023-11-29 01:08:06,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 48 [2023-11-29 01:08:07,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 01:08:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:08:07,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:08:07,298 INFO L349 Elim1Store]: treesize reduction 51, result has 52.3 percent of original size [2023-11-29 01:08:07,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 448 treesize of output 355 [2023-11-29 01:08:07,313 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:08:07,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 183 treesize of output 175 [2023-11-29 01:08:07,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2023-11-29 01:08:07,412 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:08:07,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 188 treesize of output 194 [2023-11-29 01:08:07,757 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:08:07,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983784259] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:08:07,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:08:07,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2023-11-29 01:08:07,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679669626] [2023-11-29 01:08:07,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:08:07,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:08:07,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:07,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:08:07,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:08:07,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 87 [2023-11-29 01:08:07,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 138 transitions, 1157 flow. Second operand has 24 states, 24 states have (on average 33.666666666666664) internal successors, (808), 24 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:07,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:08:07,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 87 [2023-11-29 01:08:07,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:08:09,475 INFO L124 PetriNetUnfolderBase]: 3925/8384 cut-off events. [2023-11-29 01:08:09,475 INFO L125 PetriNetUnfolderBase]: For 15095/15095 co-relation queries the response was YES. [2023-11-29 01:08:09,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25531 conditions, 8384 events. 3925/8384 cut-off events. For 15095/15095 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 48540 event pairs, 1385 based on Foata normal form. 50/8358 useless extension candidates. Maximal degree in co-relation 25488. Up to 2649 conditions per place. [2023-11-29 01:08:09,522 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 108 selfloop transitions, 66 changer transitions 3/197 dead transitions. [2023-11-29 01:08:09,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 197 transitions, 1765 flow [2023-11-29 01:08:09,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:08:09,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:08:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 355 transitions. [2023-11-29 01:08:09,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45338441890166026 [2023-11-29 01:08:09,524 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 355 transitions. [2023-11-29 01:08:09,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 355 transitions. [2023-11-29 01:08:09,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:08:09,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 355 transitions. [2023-11-29 01:08:09,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 39.44444444444444) internal successors, (355), 9 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:09,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:09,525 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:09,525 INFO L175 Difference]: Start difference. First operand has 197 places, 138 transitions, 1157 flow. Second operand 9 states and 355 transitions. [2023-11-29 01:08:09,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 197 transitions, 1765 flow [2023-11-29 01:08:09,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 197 transitions, 1516 flow, removed 13 selfloop flow, removed 27 redundant places. [2023-11-29 01:08:09,552 INFO L231 Difference]: Finished difference. Result has 177 places, 137 transitions, 1034 flow [2023-11-29 01:08:09,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1034, PETRI_PLACES=177, PETRI_TRANSITIONS=137} [2023-11-29 01:08:09,553 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 98 predicate places. [2023-11-29 01:08:09,553 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 137 transitions, 1034 flow [2023-11-29 01:08:09,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 33.666666666666664) internal successors, (808), 24 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:09,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:08:09,553 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:08:09,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:08:09,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 01:08:09,754 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:08:09,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:09,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2040421919, now seen corresponding path program 1 times [2023-11-29 01:08:09,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:09,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695091310] [2023-11-29 01:08:09,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:09,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:10,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:10,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695091310] [2023-11-29 01:08:10,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695091310] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:08:10,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291798842] [2023-11-29 01:08:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:10,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:10,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:10,677 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:10,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:08:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:10,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-29 01:08:10,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:11,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:08:11,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:08:11,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:08:11,274 INFO L349 Elim1Store]: treesize reduction 36, result has 39.0 percent of original size [2023-11-29 01:08:11,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 46 [2023-11-29 01:08:11,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-11-29 01:08:11,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-11-29 01:08:11,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:08:11,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 01:08:11,540 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:11,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:08:12,145 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:12,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291798842] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:08:12,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:08:12,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 28 [2023-11-29 01:08:12,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639802627] [2023-11-29 01:08:12,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:08:12,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 01:08:12,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:12,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 01:08:12,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:08:12,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 87 [2023-11-29 01:08:12,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 137 transitions, 1034 flow. Second operand has 29 states, 29 states have (on average 31.586206896551722) internal successors, (916), 29 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:12,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:08:12,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 87 [2023-11-29 01:08:12,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:08:14,183 INFO L124 PetriNetUnfolderBase]: 4117/8660 cut-off events. [2023-11-29 01:08:14,183 INFO L125 PetriNetUnfolderBase]: For 13884/13884 co-relation queries the response was YES. [2023-11-29 01:08:14,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25432 conditions, 8660 events. 4117/8660 cut-off events. For 13884/13884 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 49587 event pairs, 2117 based on Foata normal form. 70/8688 useless extension candidates. Maximal degree in co-relation 25395. Up to 4189 conditions per place. [2023-11-29 01:08:14,230 INFO L140 encePairwiseOnDemand]: 70/87 looper letters, 85 selfloop transitions, 76 changer transitions 0/179 dead transitions. [2023-11-29 01:08:14,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 179 transitions, 1540 flow [2023-11-29 01:08:14,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:08:14,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 01:08:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 299 transitions. [2023-11-29 01:08:14,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4295977011494253 [2023-11-29 01:08:14,231 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 299 transitions. [2023-11-29 01:08:14,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 299 transitions. [2023-11-29 01:08:14,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:08:14,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 299 transitions. [2023-11-29 01:08:14,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 37.375) internal successors, (299), 8 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:14,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:14,233 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:14,233 INFO L175 Difference]: Start difference. First operand has 177 places, 137 transitions, 1034 flow. Second operand 8 states and 299 transitions. [2023-11-29 01:08:14,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 179 transitions, 1540 flow [2023-11-29 01:08:14,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 179 transitions, 1406 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-29 01:08:14,255 INFO L231 Difference]: Finished difference. Result has 174 places, 136 transitions, 1048 flow [2023-11-29 01:08:14,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1048, PETRI_PLACES=174, PETRI_TRANSITIONS=136} [2023-11-29 01:08:14,256 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 95 predicate places. [2023-11-29 01:08:14,257 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 136 transitions, 1048 flow [2023-11-29 01:08:14,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 31.586206896551722) internal successors, (916), 29 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:14,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:08:14,257 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:08:14,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:08:14,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:08:14,458 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-29 01:08:14,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:14,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1298406384, now seen corresponding path program 1 times [2023-11-29 01:08:14,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:14,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975835893] [2023-11-29 01:08:14,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:14,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:16,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:16,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975835893] [2023-11-29 01:08:16,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975835893] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:08:16,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409483588] [2023-11-29 01:08:16,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:16,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:16,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:16,306 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:16,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b847e268-64ba-411a-ad1c-719572a89190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:08:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:16,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 83 conjunts are in the unsatisfiable core [2023-11-29 01:08:16,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:16,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2023-11-29 01:08:16,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2023-11-29 01:08:16,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2023-11-29 01:08:16,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 44 [2023-11-29 01:08:16,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 48 [2023-11-29 01:08:16,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 53 [2023-11-29 01:08:17,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 64 [2023-11-29 01:08:17,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 157 [2023-11-29 01:08:17,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 168 [2023-11-29 01:08:18,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 491 treesize of output 388 [2023-11-29 01:08:19,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2238 treesize of output 1813 [2023-11-29 01:08:25,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10527 treesize of output 8452 [2023-11-29 01:08:36,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38482 treesize of output 30795 [2023-11-29 01:08:45,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132948 treesize of output 105430 [2023-11-29 01:08:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:45,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:37,585 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:11:37,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409483588] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:37,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:11:37,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 18] total 50 [2023-11-29 01:11:37,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991081559] [2023-11-29 01:11:37,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:37,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-29 01:11:37,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:37,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-29 01:11:37,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=2069, Unknown=46, NotChecked=0, Total=2652 [2023-11-29 01:11:41,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:11:42,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:11:46,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:11:48,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:11:52,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:11:56,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:12:00,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:12:04,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:12:08,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:12:12,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:12:16,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:12:20,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:12:24,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:12:28,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:12:28,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 87 [2023-11-29 01:12:28,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 136 transitions, 1048 flow. Second operand has 52 states, 52 states have (on average 21.365384615384617) internal successors, (1111), 52 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:28,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:28,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 87 [2023-11-29 01:12:28,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:33,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:12:38,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:12:46,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:12:50,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:12:54,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:12:58,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:13:02,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:13:06,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:13:10,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:13:14,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:13:18,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:13:22,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:13:26,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:13:29,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:13:43,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:13:45,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:02,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:25,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:27,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:31,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:14:37,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:41,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:45,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:49,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:14:54,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:15:32,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:15:37,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:15:41,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:15:45,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:15:49,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:15:53,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:15:57,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:16:01,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:16:06,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:16:10,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:16:14,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:16:57,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:17:01,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:17:06,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:17:10,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:17:11,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:17:15,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:17:59,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:18:03,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:18:07,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:18:11,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:18:15,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:18:19,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:18:23,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:18:27,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:18:31,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:18:35,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:18:39,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:18:43,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:18:47,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:18:51,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:18:56,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:19:00,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:19:04,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:19:08,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:19:12,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:19:16,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:19:20,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:19:24,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:19:28,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:19:32,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:19:36,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:19:40,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:19:44,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:19:48,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:19:52,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:19:56,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:19:58,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 01:20:02,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]