./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_ok_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl --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 f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:23:04,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:23:04,463 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:23:04,473 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:23:04,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:23:04,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:23:04,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:23:04,516 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:23:04,517 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:23:04,522 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:23:04,523 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:23:04,524 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:23:04,524 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:23:04,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:23:04,527 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:23:04,527 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:23:04,528 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:23:04,528 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:23:04,528 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:23:04,529 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:23:04,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:23:04,530 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:23:04,530 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:23:04,531 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:23:04,531 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:23:04,532 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:23:04,532 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:23:04,533 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:23:04,534 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:23:04,534 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:23:04,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:23:04,536 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:23:04,536 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:23:04,536 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:23:04,537 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:23:04,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:23:04,537 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:23:04,537 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:23:04,538 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:23:04,538 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:23:04,538 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:23:04,539 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_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a [2023-11-12 02:23:04,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:23:04,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:23:04,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:23:04,874 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:23:04,874 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:23:04,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread/queue_ok_longer.i [2023-11-12 02:23:08,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:23:08,477 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:23:08,478 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/sv-benchmarks/c/pthread/queue_ok_longer.i [2023-11-12 02:23:08,508 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/data/0f07fbebf/454e49232f2d40b2b0c0feb3c86d69a7/FLAG0c797492c [2023-11-12 02:23:08,523 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/data/0f07fbebf/454e49232f2d40b2b0c0feb3c86d69a7 [2023-11-12 02:23:08,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:23:08,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:23:08,529 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:23:08,529 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:23:08,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:23:08,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:23:08" (1/1) ... [2023-11-12 02:23:08,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75907573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:08, skipping insertion in model container [2023-11-12 02:23:08,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:23:08" (1/1) ... [2023-11-12 02:23:08,588 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:23:09,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:23:09,237 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:23:09,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:23:09,419 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:23:09,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:09 WrapperNode [2023-11-12 02:23:09,420 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:23:09,420 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:23:09,421 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:23:09,421 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:23:09,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:09" (1/1) ... [2023-11-12 02:23:09,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:09" (1/1) ... [2023-11-12 02:23:09,486 INFO L138 Inliner]: procedures = 274, calls = 59, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 220 [2023-11-12 02:23:09,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:23:09,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:23:09,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:23:09,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:23:09,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:09" (1/1) ... [2023-11-12 02:23:09,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:09" (1/1) ... [2023-11-12 02:23:09,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:09" (1/1) ... [2023-11-12 02:23:09,530 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:09" (1/1) ... [2023-11-12 02:23:09,542 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:09" (1/1) ... [2023-11-12 02:23:09,546 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:09" (1/1) ... [2023-11-12 02:23:09,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:09" (1/1) ... [2023-11-12 02:23:09,552 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:09" (1/1) ... [2023-11-12 02:23:09,557 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:23:09,558 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:23:09,558 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:23:09,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:23:09,559 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:09" (1/1) ... [2023-11-12 02:23:09,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:23:09,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:23:09,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:23:09,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:23:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-12 02:23:09,641 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-12 02:23:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-12 02:23:09,642 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-12 02:23:09,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:23:09,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:23:09,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:23:09,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:23:09,642 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:23:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:23:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:23:09,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:23:09,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:23:09,644 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:23:09,811 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:23:09,813 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:23:10,176 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:23:10,188 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:23:10,188 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:23:10,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:23:10 BoogieIcfgContainer [2023-11-12 02:23:10,191 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:23:10,194 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:23:10,195 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:23:10,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:23:10,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:23:08" (1/3) ... [2023-11-12 02:23:10,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234e906a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:23:10, skipping insertion in model container [2023-11-12 02:23:10,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:09" (2/3) ... [2023-11-12 02:23:10,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234e906a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:23:10, skipping insertion in model container [2023-11-12 02:23:10,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:23:10" (3/3) ... [2023-11-12 02:23:10,202 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2023-11-12 02:23:10,212 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:23:10,224 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:23:10,224 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-12 02:23:10,224 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:23:10,346 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:23:10,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 258 transitions, 530 flow [2023-11-12 02:23:10,519 INFO L124 PetriNetUnfolderBase]: 15/256 cut-off events. [2023-11-12 02:23:10,520 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:23:10,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 256 events. 15/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 477 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 175. Up to 3 conditions per place. [2023-11-12 02:23:10,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 258 transitions, 530 flow [2023-11-12 02:23:10,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 246 transitions, 501 flow [2023-11-12 02:23:10,564 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:23:10,585 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 246 transitions, 501 flow [2023-11-12 02:23:10,588 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 246 transitions, 501 flow [2023-11-12 02:23:10,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 246 transitions, 501 flow [2023-11-12 02:23:10,689 INFO L124 PetriNetUnfolderBase]: 15/246 cut-off events. [2023-11-12 02:23:10,690 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:23:10,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 246 events. 15/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 393 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 175. Up to 3 conditions per place. [2023-11-12 02:23:10,712 INFO L119 LiptonReduction]: Number of co-enabled transitions 15300 [2023-11-12 02:23:19,185 INFO L134 LiptonReduction]: Checked pairs total: 32311 [2023-11-12 02:23:19,185 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-11-12 02:23:19,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:23:19,209 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;@4b1fa6ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:23:19,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-12 02:23:19,214 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:23:19,215 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-11-12 02:23:19,215 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:23:19,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:19,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:19,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:23:19,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:19,222 INFO L85 PathProgramCache]: Analyzing trace with hash 665727335, now seen corresponding path program 1 times [2023-11-12 02:23:19,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:19,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754522532] [2023-11-12 02:23:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:19,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:20,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:20,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:20,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754522532] [2023-11-12 02:23:20,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754522532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:20,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:20,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:23:20,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983768653] [2023-11-12 02:23:20,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:20,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:23:20,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:20,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:23:20,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:23:20,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 499 [2023-11-12 02:23:20,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 228.4) internal successors, (1142), 5 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:20,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:20,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 499 [2023-11-12 02:23:20,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:21,686 INFO L124 PetriNetUnfolderBase]: 1539/2565 cut-off events. [2023-11-12 02:23:21,686 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-12 02:23:21,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5135 conditions, 2565 events. 1539/2565 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 13276 event pairs, 1057 based on Foata normal form. 0/1843 useless extension candidates. Maximal degree in co-relation 4915. Up to 2376 conditions per place. [2023-11-12 02:23:21,710 INFO L140 encePairwiseOnDemand]: 490/499 looper letters, 78 selfloop transitions, 12 changer transitions 0/97 dead transitions. [2023-11-12 02:23:21,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 97 transitions, 386 flow [2023-11-12 02:23:21,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:23:21,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:23:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1453 transitions. [2023-11-12 02:23:21,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48530394121576487 [2023-11-12 02:23:21,735 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1453 transitions. [2023-11-12 02:23:21,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1453 transitions. [2023-11-12 02:23:21,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:21,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1453 transitions. [2023-11-12 02:23:21,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.16666666666666) internal successors, (1453), 6 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:21,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:21,764 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:21,766 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 125 flow. Second operand 6 states and 1453 transitions. [2023-11-12 02:23:21,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 97 transitions, 386 flow [2023-11-12 02:23:21,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 97 transitions, 380 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:23:21,776 INFO L231 Difference]: Finished difference. Result has 64 places, 68 transitions, 194 flow [2023-11-12 02:23:21,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=64, PETRI_TRANSITIONS=68} [2023-11-12 02:23:21,782 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-11-12 02:23:21,782 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 68 transitions, 194 flow [2023-11-12 02:23:21,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 228.4) internal successors, (1142), 5 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:21,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:21,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:21,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:23:21,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:23:21,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:21,785 INFO L85 PathProgramCache]: Analyzing trace with hash 665727366, now seen corresponding path program 1 times [2023-11-12 02:23:21,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:21,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806454519] [2023-11-12 02:23:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:21,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:22,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:22,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806454519] [2023-11-12 02:23:22,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806454519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:22,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:22,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:23:22,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404946379] [2023-11-12 02:23:22,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:22,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:23:22,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:22,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:23:22,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:23:22,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 499 [2023-11-12 02:23:22,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 68 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 229.4) internal successors, (1147), 5 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:22,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:22,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 499 [2023-11-12 02:23:22,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:22,936 INFO L124 PetriNetUnfolderBase]: 1538/2566 cut-off events. [2023-11-12 02:23:22,937 INFO L125 PetriNetUnfolderBase]: For 307/307 co-relation queries the response was YES. [2023-11-12 02:23:22,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5478 conditions, 2566 events. 1538/2566 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 13069 event pairs, 1078 based on Foata normal form. 0/1936 useless extension candidates. Maximal degree in co-relation 3987. Up to 2493 conditions per place. [2023-11-12 02:23:22,962 INFO L140 encePairwiseOnDemand]: 492/499 looper letters, 56 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2023-11-12 02:23:22,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 331 flow [2023-11-12 02:23:22,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:23:22,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:23:22,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1432 transitions. [2023-11-12 02:23:22,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47828991315965264 [2023-11-12 02:23:22,970 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1432 transitions. [2023-11-12 02:23:22,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1432 transitions. [2023-11-12 02:23:22,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:22,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1432 transitions. [2023-11-12 02:23:22,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 238.66666666666666) internal successors, (1432), 6 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:22,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:22,988 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:22,989 INFO L175 Difference]: Start difference. First operand has 64 places, 68 transitions, 194 flow. Second operand 6 states and 1432 transitions. [2023-11-12 02:23:22,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 331 flow [2023-11-12 02:23:22,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 331 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:23:22,999 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 216 flow [2023-11-12 02:23:22,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2023-11-12 02:23:23,000 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2023-11-12 02:23:23,001 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 216 flow [2023-11-12 02:23:23,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.4) internal successors, (1147), 5 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:23,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:23,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:23,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:23:23,010 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:23:23,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:23,012 INFO L85 PathProgramCache]: Analyzing trace with hash -837658764, now seen corresponding path program 1 times [2023-11-12 02:23:23,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:23,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655222682] [2023-11-12 02:23:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:23,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:23,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:23,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:23,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655222682] [2023-11-12 02:23:23,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655222682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:23,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:23,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:23:23,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142471941] [2023-11-12 02:23:23,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:23,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:23:23,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:23,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:23:23,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:23:23,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 499 [2023-11-12 02:23:23,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 225.33333333333334) internal successors, (1352), 6 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:23,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:23,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 499 [2023-11-12 02:23:23,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:24,758 INFO L124 PetriNetUnfolderBase]: 2024/3407 cut-off events. [2023-11-12 02:23:24,758 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-11-12 02:23:24,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7260 conditions, 3407 events. 2024/3407 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18930 event pairs, 395 based on Foata normal form. 29/2707 useless extension candidates. Maximal degree in co-relation 6994. Up to 2565 conditions per place. [2023-11-12 02:23:24,789 INFO L140 encePairwiseOnDemand]: 490/499 looper letters, 123 selfloop transitions, 17 changer transitions 0/147 dead transitions. [2023-11-12 02:23:24,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 147 transitions, 673 flow [2023-11-12 02:23:24,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:23:24,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:23:24,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1480 transitions. [2023-11-12 02:23:24,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49432197728790916 [2023-11-12 02:23:24,797 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1480 transitions. [2023-11-12 02:23:24,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1480 transitions. [2023-11-12 02:23:24,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:24,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1480 transitions. [2023-11-12 02:23:24,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 246.66666666666666) internal successors, (1480), 6 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:24,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:24,815 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:24,816 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 216 flow. Second operand 6 states and 1480 transitions. [2023-11-12 02:23:24,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 147 transitions, 673 flow [2023-11-12 02:23:24,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 147 transitions, 658 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:23:24,828 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 295 flow [2023-11-12 02:23:24,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=295, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2023-11-12 02:23:24,830 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2023-11-12 02:23:24,830 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 295 flow [2023-11-12 02:23:24,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 225.33333333333334) internal successors, (1352), 6 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:24,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:24,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:24,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:23:24,832 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:23:24,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:24,833 INFO L85 PathProgramCache]: Analyzing trace with hash -836966844, now seen corresponding path program 2 times [2023-11-12 02:23:24,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:24,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660822234] [2023-11-12 02:23:24,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:24,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:25,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:25,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660822234] [2023-11-12 02:23:25,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660822234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:25,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:25,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:23:25,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775207674] [2023-11-12 02:23:25,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:25,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:23:25,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:25,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:23:25,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:23:25,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 499 [2023-11-12 02:23:25,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 227.33333333333334) internal successors, (1364), 6 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:25,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:25,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 499 [2023-11-12 02:23:25,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:26,454 INFO L124 PetriNetUnfolderBase]: 2164/3636 cut-off events. [2023-11-12 02:23:26,455 INFO L125 PetriNetUnfolderBase]: For 1151/1151 co-relation queries the response was YES. [2023-11-12 02:23:26,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8521 conditions, 3636 events. 2164/3636 cut-off events. For 1151/1151 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 20364 event pairs, 421 based on Foata normal form. 29/2905 useless extension candidates. Maximal degree in co-relation 8021. Up to 2598 conditions per place. [2023-11-12 02:23:26,492 INFO L140 encePairwiseOnDemand]: 491/499 looper letters, 112 selfloop transitions, 19 changer transitions 0/138 dead transitions. [2023-11-12 02:23:26,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 138 transitions, 707 flow [2023-11-12 02:23:26,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:23:26,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:23:26,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1248 transitions. [2023-11-12 02:23:26,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5002004008016032 [2023-11-12 02:23:26,499 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1248 transitions. [2023-11-12 02:23:26,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1248 transitions. [2023-11-12 02:23:26,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:26,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1248 transitions. [2023-11-12 02:23:26,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.6) internal successors, (1248), 5 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:26,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 499.0) internal successors, (2994), 6 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:26,514 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 499.0) internal successors, (2994), 6 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:26,514 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 295 flow. Second operand 5 states and 1248 transitions. [2023-11-12 02:23:26,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 138 transitions, 707 flow [2023-11-12 02:23:26,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 138 transitions, 695 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-12 02:23:26,535 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 375 flow [2023-11-12 02:23:26,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=375, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2023-11-12 02:23:26,539 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 21 predicate places. [2023-11-12 02:23:26,539 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 375 flow [2023-11-12 02:23:26,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 227.33333333333334) internal successors, (1364), 6 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:26,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:26,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:26,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:23:26,541 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:23:26,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:26,542 INFO L85 PathProgramCache]: Analyzing trace with hash 548683948, now seen corresponding path program 1 times [2023-11-12 02:23:26,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:26,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355744233] [2023-11-12 02:23:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:26,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:26,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:26,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:26,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355744233] [2023-11-12 02:23:26,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355744233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:26,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:26,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:23:26,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092516863] [2023-11-12 02:23:26,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:26,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:23:26,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:26,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:23:26,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:23:26,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 499 [2023-11-12 02:23:26,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 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) [2023-11-12 02:23:26,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:26,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 499 [2023-11-12 02:23:26,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:27,519 INFO L124 PetriNetUnfolderBase]: 3559/5933 cut-off events. [2023-11-12 02:23:27,519 INFO L125 PetriNetUnfolderBase]: For 3688/3728 co-relation queries the response was YES. [2023-11-12 02:23:27,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14271 conditions, 5933 events. 3559/5933 cut-off events. For 3688/3728 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 36539 event pairs, 1618 based on Foata normal form. 40/4615 useless extension candidates. Maximal degree in co-relation 13462. Up to 3482 conditions per place. [2023-11-12 02:23:27,580 INFO L140 encePairwiseOnDemand]: 492/499 looper letters, 154 selfloop transitions, 4 changer transitions 0/168 dead transitions. [2023-11-12 02:23:27,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 168 transitions, 1038 flow [2023-11-12 02:23:27,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:23:27,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:23:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1065 transitions. [2023-11-12 02:23:27,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335671342685371 [2023-11-12 02:23:27,586 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1065 transitions. [2023-11-12 02:23:27,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1065 transitions. [2023-11-12 02:23:27,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:27,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1065 transitions. [2023-11-12 02:23:27,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:27,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 499.0) internal successors, (2495), 5 states have internal predecessors, (2495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:27,597 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 499.0) internal successors, (2495), 5 states have internal predecessors, (2495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:27,598 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 375 flow. Second operand 4 states and 1065 transitions. [2023-11-12 02:23:27,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 168 transitions, 1038 flow [2023-11-12 02:23:27,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 168 transitions, 1002 flow, removed 18 selfloop flow, removed 0 redundant places. [2023-11-12 02:23:27,612 INFO L231 Difference]: Finished difference. Result has 84 places, 87 transitions, 395 flow [2023-11-12 02:23:27,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=395, PETRI_PLACES=84, PETRI_TRANSITIONS=87} [2023-11-12 02:23:27,615 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 26 predicate places. [2023-11-12 02:23:27,615 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 87 transitions, 395 flow [2023-11-12 02:23:27,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 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) [2023-11-12 02:23:27,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:27,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:27,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:23:27,617 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:23:27,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:27,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1474196765, now seen corresponding path program 1 times [2023-11-12 02:23:27,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:27,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720986519] [2023-11-12 02:23:27,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:27,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:28,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:28,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:28,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720986519] [2023-11-12 02:23:28,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720986519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:28,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:28,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:23:28,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225025757] [2023-11-12 02:23:28,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:28,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:23:28,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:28,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:23:28,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:23:28,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 499 [2023-11-12 02:23:28,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 87 transitions, 395 flow. Second operand has 6 states, 6 states have (on average 229.66666666666666) internal successors, (1378), 6 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:28,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:28,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 499 [2023-11-12 02:23:28,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:29,417 INFO L124 PetriNetUnfolderBase]: 3776/6423 cut-off events. [2023-11-12 02:23:29,418 INFO L125 PetriNetUnfolderBase]: For 3180/3192 co-relation queries the response was YES. [2023-11-12 02:23:29,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15771 conditions, 6423 events. 3776/6423 cut-off events. For 3180/3192 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 39735 event pairs, 2326 based on Foata normal form. 0/5282 useless extension candidates. Maximal degree in co-relation 14332. Up to 5758 conditions per place. [2023-11-12 02:23:29,472 INFO L140 encePairwiseOnDemand]: 488/499 looper letters, 104 selfloop transitions, 15 changer transitions 0/126 dead transitions. [2023-11-12 02:23:29,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 126 transitions, 747 flow [2023-11-12 02:23:29,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:23:29,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:23:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1693 transitions. [2023-11-12 02:23:29,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48468365302032634 [2023-11-12 02:23:29,480 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1693 transitions. [2023-11-12 02:23:29,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1693 transitions. [2023-11-12 02:23:29,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:29,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1693 transitions. [2023-11-12 02:23:29,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 241.85714285714286) internal successors, (1693), 7 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:29,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 499.0) internal successors, (3992), 8 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:29,496 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 499.0) internal successors, (3992), 8 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:29,497 INFO L175 Difference]: Start difference. First operand has 84 places, 87 transitions, 395 flow. Second operand 7 states and 1693 transitions. [2023-11-12 02:23:29,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 126 transitions, 747 flow [2023-11-12 02:23:29,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 126 transitions, 743 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:23:29,514 INFO L231 Difference]: Finished difference. Result has 91 places, 92 transitions, 458 flow [2023-11-12 02:23:29,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=458, PETRI_PLACES=91, PETRI_TRANSITIONS=92} [2023-11-12 02:23:29,517 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 33 predicate places. [2023-11-12 02:23:29,518 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 92 transitions, 458 flow [2023-11-12 02:23:29,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.66666666666666) internal successors, (1378), 6 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:29,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:29,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:29,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:23:29,519 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:23:29,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:29,520 INFO L85 PathProgramCache]: Analyzing trace with hash -931432907, now seen corresponding path program 1 times [2023-11-12 02:23:29,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:29,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794217791] [2023-11-12 02:23:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:29,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:30,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:30,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794217791] [2023-11-12 02:23:30,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794217791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:30,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:30,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:23:30,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068841590] [2023-11-12 02:23:30,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:30,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:23:30,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:30,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:23:30,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:23:30,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 499 [2023-11-12 02:23:30,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 92 transitions, 458 flow. Second operand has 7 states, 7 states have (on average 225.57142857142858) internal successors, (1579), 7 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:30,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:30,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 499 [2023-11-12 02:23:30,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:32,095 INFO L124 PetriNetUnfolderBase]: 4838/7998 cut-off events. [2023-11-12 02:23:32,095 INFO L125 PetriNetUnfolderBase]: For 3671/3715 co-relation queries the response was YES. [2023-11-12 02:23:32,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20453 conditions, 7998 events. 4838/7998 cut-off events. For 3671/3715 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 50024 event pairs, 1004 based on Foata normal form. 79/6976 useless extension candidates. Maximal degree in co-relation 18902. Up to 4814 conditions per place. [2023-11-12 02:23:32,180 INFO L140 encePairwiseOnDemand]: 488/499 looper letters, 144 selfloop transitions, 23 changer transitions 0/174 dead transitions. [2023-11-12 02:23:32,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 174 transitions, 1051 flow [2023-11-12 02:23:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:23:32,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:23:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1255 transitions. [2023-11-12 02:23:32,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503006012024048 [2023-11-12 02:23:32,188 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1255 transitions. [2023-11-12 02:23:32,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1255 transitions. [2023-11-12 02:23:32,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:32,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1255 transitions. [2023-11-12 02:23:32,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:32,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 499.0) internal successors, (2994), 6 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:32,203 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 499.0) internal successors, (2994), 6 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:32,204 INFO L175 Difference]: Start difference. First operand has 91 places, 92 transitions, 458 flow. Second operand 5 states and 1255 transitions. [2023-11-12 02:23:32,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 174 transitions, 1051 flow [2023-11-12 02:23:32,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 174 transitions, 1038 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-12 02:23:32,265 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 567 flow [2023-11-12 02:23:32,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=567, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2023-11-12 02:23:32,267 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 36 predicate places. [2023-11-12 02:23:32,268 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 567 flow [2023-11-12 02:23:32,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.57142857142858) internal successors, (1579), 7 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:32,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:32,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:32,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:23:32,270 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:23:32,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:32,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1560884524, now seen corresponding path program 1 times [2023-11-12 02:23:32,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:32,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206602223] [2023-11-12 02:23:32,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:32,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:32,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:32,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206602223] [2023-11-12 02:23:32,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206602223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:32,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:32,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:23:32,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504718594] [2023-11-12 02:23:32,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:32,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:23:32,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:32,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:23:32,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:23:33,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 499 [2023-11-12 02:23:33,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 567 flow. Second operand has 7 states, 7 states have (on average 226.57142857142858) internal successors, (1586), 7 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:33,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:33,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 499 [2023-11-12 02:23:33,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:34,354 INFO L124 PetriNetUnfolderBase]: 5200/8666 cut-off events. [2023-11-12 02:23:34,354 INFO L125 PetriNetUnfolderBase]: For 8430/8468 co-relation queries the response was YES. [2023-11-12 02:23:34,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23544 conditions, 8666 events. 5200/8666 cut-off events. For 8430/8468 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 54407 event pairs, 1216 based on Foata normal form. 235/7727 useless extension candidates. Maximal degree in co-relation 20941. Up to 6030 conditions per place. [2023-11-12 02:23:34,426 INFO L140 encePairwiseOnDemand]: 487/499 looper letters, 178 selfloop transitions, 26 changer transitions 0/211 dead transitions. [2023-11-12 02:23:34,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 211 transitions, 1326 flow [2023-11-12 02:23:34,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:23:34,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:23:34,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1741 transitions. [2023-11-12 02:23:34,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49842542227311765 [2023-11-12 02:23:34,435 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1741 transitions. [2023-11-12 02:23:34,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1741 transitions. [2023-11-12 02:23:34,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:34,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1741 transitions. [2023-11-12 02:23:34,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 248.71428571428572) internal successors, (1741), 7 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:34,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 499.0) internal successors, (3992), 8 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:34,460 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 499.0) internal successors, (3992), 8 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:34,468 INFO L175 Difference]: Start difference. First operand has 94 places, 98 transitions, 567 flow. Second operand 7 states and 1741 transitions. [2023-11-12 02:23:34,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 211 transitions, 1326 flow [2023-11-12 02:23:34,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 211 transitions, 1307 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-12 02:23:34,560 INFO L231 Difference]: Finished difference. Result has 100 places, 105 transitions, 677 flow [2023-11-12 02:23:34,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=677, PETRI_PLACES=100, PETRI_TRANSITIONS=105} [2023-11-12 02:23:34,562 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2023-11-12 02:23:34,562 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 105 transitions, 677 flow [2023-11-12 02:23:34,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 226.57142857142858) internal successors, (1586), 7 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:34,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:34,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:34,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:23:34,564 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:23:34,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:34,570 INFO L85 PathProgramCache]: Analyzing trace with hash -995547143, now seen corresponding path program 1 times [2023-11-12 02:23:34,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:34,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257977932] [2023-11-12 02:23:34,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:34,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:34,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:34,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257977932] [2023-11-12 02:23:34,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257977932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:34,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:34,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:23:34,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802078622] [2023-11-12 02:23:34,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:34,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:23:34,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:34,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:23:34,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:23:34,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 499 [2023-11-12 02:23:34,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 105 transitions, 677 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:34,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:34,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 499 [2023-11-12 02:23:34,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:34,922 INFO L124 PetriNetUnfolderBase]: 739/1483 cut-off events. [2023-11-12 02:23:34,922 INFO L125 PetriNetUnfolderBase]: For 1114/1114 co-relation queries the response was YES. [2023-11-12 02:23:34,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3876 conditions, 1483 events. 739/1483 cut-off events. For 1114/1114 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8548 event pairs, 473 based on Foata normal form. 72/1410 useless extension candidates. Maximal degree in co-relation 3527. Up to 785 conditions per place. [2023-11-12 02:23:34,933 INFO L140 encePairwiseOnDemand]: 495/499 looper letters, 78 selfloop transitions, 2 changer transitions 6/95 dead transitions. [2023-11-12 02:23:34,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 95 transitions, 703 flow [2023-11-12 02:23:34,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:23:34,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:23:34,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 780 transitions. [2023-11-12 02:23:34,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210420841683366 [2023-11-12 02:23:34,937 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 780 transitions. [2023-11-12 02:23:34,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 780 transitions. [2023-11-12 02:23:34,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:34,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 780 transitions. [2023-11-12 02:23:34,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:34,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:34,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:34,945 INFO L175 Difference]: Start difference. First operand has 100 places, 105 transitions, 677 flow. Second operand 3 states and 780 transitions. [2023-11-12 02:23:34,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 95 transitions, 703 flow [2023-11-12 02:23:34,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 95 transitions, 670 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-12 02:23:34,955 INFO L231 Difference]: Finished difference. Result has 101 places, 84 transitions, 471 flow [2023-11-12 02:23:34,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=471, PETRI_PLACES=101, PETRI_TRANSITIONS=84} [2023-11-12 02:23:34,956 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 43 predicate places. [2023-11-12 02:23:34,956 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 84 transitions, 471 flow [2023-11-12 02:23:34,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:34,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:34,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:34,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:23:34,958 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:23:34,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:34,959 INFO L85 PathProgramCache]: Analyzing trace with hash 635992630, now seen corresponding path program 1 times [2023-11-12 02:23:34,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:34,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63791669] [2023-11-12 02:23:34,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:34,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:35,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:35,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63791669] [2023-11-12 02:23:35,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63791669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:35,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:35,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:23:35,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702960077] [2023-11-12 02:23:35,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:35,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:23:35,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:35,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:23:35,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:23:35,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 499 [2023-11-12 02:23:35,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 84 transitions, 471 flow. Second operand has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:35,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:35,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 499 [2023-11-12 02:23:35,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:35,247 INFO L124 PetriNetUnfolderBase]: 551/1115 cut-off events. [2023-11-12 02:23:35,248 INFO L125 PetriNetUnfolderBase]: For 739/739 co-relation queries the response was YES. [2023-11-12 02:23:35,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2951 conditions, 1115 events. 551/1115 cut-off events. For 739/739 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5714 event pairs, 410 based on Foata normal form. 8/1011 useless extension candidates. Maximal degree in co-relation 2786. Up to 843 conditions per place. [2023-11-12 02:23:35,256 INFO L140 encePairwiseOnDemand]: 494/499 looper letters, 80 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-11-12 02:23:35,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 92 transitions, 655 flow [2023-11-12 02:23:35,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:23:35,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:23:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2023-11-12 02:23:35,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257181028724115 [2023-11-12 02:23:35,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2023-11-12 02:23:35,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2023-11-12 02:23:35,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:35,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2023-11-12 02:23:35,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:35,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:35,268 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:35,268 INFO L175 Difference]: Start difference. First operand has 101 places, 84 transitions, 471 flow. Second operand 3 states and 787 transitions. [2023-11-12 02:23:35,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 92 transitions, 655 flow [2023-11-12 02:23:35,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 92 transitions, 645 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-12 02:23:35,277 INFO L231 Difference]: Finished difference. Result has 101 places, 84 transitions, 467 flow [2023-11-12 02:23:35,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=467, PETRI_PLACES=101, PETRI_TRANSITIONS=84} [2023-11-12 02:23:35,279 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 43 predicate places. [2023-11-12 02:23:35,279 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 84 transitions, 467 flow [2023-11-12 02:23:35,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:35,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:35,280 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:35,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:23:35,280 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:23:35,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:35,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1757219439, now seen corresponding path program 1 times [2023-11-12 02:23:35,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:35,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234928048] [2023-11-12 02:23:35,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:35,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:36,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:36,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234928048] [2023-11-12 02:23:36,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234928048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:23:36,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861750318] [2023-11-12 02:23:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:36,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:23:36,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:23:36,207 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:23:36,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:23:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:36,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-12 02:23:36,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:36,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:23:36,481 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 7 [2023-11-12 02:23:36,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:23:36,492 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2023-11-12 02:23:36,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:23:36,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:23:36,513 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 15 [2023-11-12 02:23:36,678 INFO L351 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 46 treesize of output 37 [2023-11-12 02:23:36,905 INFO L351 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 59 treesize of output 48 [2023-11-12 02:23:37,205 INFO L351 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 99 treesize of output 80 [2023-11-12 02:23:37,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:23:37,363 INFO L351 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 163 treesize of output 132 [2023-11-12 02:23:37,584 INFO L351 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 181 treesize of output 148 [2023-11-12 02:23:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:37,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:23:39,255 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_247 Int) (v_ArrVal_255 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43| Int) (v_ArrVal_251 Int) (v_ArrVal_253 (Array Int Int)) (v_ArrVal_249 Int)) (let ((.cse0 (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ (* |c_t1Thread1of1ForFork0_enqueue_#t~mem36#1| 4) |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_247)) (.cse1 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|)) (.cse3 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (let ((.cse2 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse0 .cse1 v_ArrVal_249) .cse3 v_ArrVal_251)) |c_~#stored_elements~0.base| v_ArrVal_253) |c_~#queue~0.base|))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_249) (< (select (store .cse2 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43|) |c_~#queue~0.offset|) v_ArrVal_255) (+ 1608 |c_~#queue~0.offset|)) 2147483647) (< (select .cse2 (+ |c_~#queue~0.offset| 1604)) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43|) (< (+ (select .cse0 .cse3) 1) v_ArrVal_251))))) is different from false [2023-11-12 02:23:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-12 02:23:46,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861750318] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:23:46,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:23:46,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2023-11-12 02:23:46,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401643726] [2023-11-12 02:23:46,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:23:46,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-12 02:23:46,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:46,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-12 02:23:46,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=690, Unknown=37, NotChecked=58, Total=992 [2023-11-12 02:23:47,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 499 [2023-11-12 02:23:47,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 84 transitions, 467 flow. Second operand has 32 states, 32 states have (on average 189.40625) internal successors, (6061), 32 states have internal predecessors, (6061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:47,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:47,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 499 [2023-11-12 02:23:47,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:49,433 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse3 (+ |c_~#queue~0.offset| 1604)) (.cse2 (+ 1608 |c_~#queue~0.offset|))) (and (< (select .cse0 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|)) 2147483647) (forall ((v_ArrVal_255 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43| Int) (v_ArrVal_253 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_~#stored_elements~0.base| v_ArrVal_253) |c_~#queue~0.base|))) (or (< (select (store .cse1 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43|) |c_~#queue~0.offset|) v_ArrVal_255) .cse2) 2147483647) (< (select .cse1 .cse3) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43|)))) (forall ((v_ArrVal_255 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43| Int) (v_ArrVal_251 Int) (v_ArrVal_253 (Array Int Int))) (let ((.cse5 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (let ((.cse4 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store .cse0 .cse5 v_ArrVal_251)) |c_~#stored_elements~0.base| v_ArrVal_253) |c_~#queue~0.base|))) (or (< (select (store .cse4 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43|) |c_~#queue~0.offset|) v_ArrVal_255) .cse2) 2147483647) (< (select .cse4 .cse3) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43|) (< (+ (select .cse0 .cse5) 1) v_ArrVal_251))))) (forall ((v_ArrVal_255 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43| Int)) (let ((.cse6 (select |c_#memory_int| |c_~#queue~0.base|))) (or (< (select .cse6 .cse3) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43|) (< (select (store .cse6 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43|) |c_~#queue~0.offset|) v_ArrVal_255) .cse2) 2147483647)))))) is different from false [2023-11-12 02:23:51,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-12 02:23:52,501 INFO L124 PetriNetUnfolderBase]: 608/1215 cut-off events. [2023-11-12 02:23:52,502 INFO L125 PetriNetUnfolderBase]: For 803/803 co-relation queries the response was YES. [2023-11-12 02:23:52,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3308 conditions, 1215 events. 608/1215 cut-off events. For 803/803 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6281 event pairs, 442 based on Foata normal form. 2/1104 useless extension candidates. Maximal degree in co-relation 2985. Up to 1071 conditions per place. [2023-11-12 02:23:52,539 INFO L140 encePairwiseOnDemand]: 481/499 looper letters, 72 selfloop transitions, 54 changer transitions 1/133 dead transitions. [2023-11-12 02:23:52,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 133 transitions, 986 flow [2023-11-12 02:23:52,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-12 02:23:52,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-12 02:23:52,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4058 transitions. [2023-11-12 02:23:52,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872506918599103 [2023-11-12 02:23:52,570 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4058 transitions. [2023-11-12 02:23:52,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4058 transitions. [2023-11-12 02:23:52,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:52,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4058 transitions. [2023-11-12 02:23:52,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 193.23809523809524) internal successors, (4058), 21 states have internal predecessors, (4058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:52,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 499.0) internal successors, (10978), 22 states have internal predecessors, (10978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:52,617 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 499.0) internal successors, (10978), 22 states have internal predecessors, (10978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:52,617 INFO L175 Difference]: Start difference. First operand has 101 places, 84 transitions, 467 flow. Second operand 21 states and 4058 transitions. [2023-11-12 02:23:52,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 133 transitions, 986 flow [2023-11-12 02:23:52,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 133 transitions, 982 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:23:52,626 INFO L231 Difference]: Finished difference. Result has 126 places, 121 transitions, 864 flow [2023-11-12 02:23:52,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=864, PETRI_PLACES=126, PETRI_TRANSITIONS=121} [2023-11-12 02:23:52,627 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 68 predicate places. [2023-11-12 02:23:52,628 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 121 transitions, 864 flow [2023-11-12 02:23:52,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 189.40625) internal successors, (6061), 32 states have internal predecessors, (6061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:52,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:52,630 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:52,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:52,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:23:52,837 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:23:52,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:52,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1757219408, now seen corresponding path program 1 times [2023-11-12 02:23:52,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:52,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287594020] [2023-11-12 02:23:52,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:52,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:53,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:53,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:53,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287594020] [2023-11-12 02:23:53,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287594020] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:23:53,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623913572] [2023-11-12 02:23:53,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:53,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:23:53,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:23:53,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:23:53,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a888353-7ebf-4b4d-9ad1-042444a0f8a0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:23:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:53,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-12 02:23:53,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:53,613 INFO L351 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