./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-complex/safestack_relacy.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_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/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_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/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_52886486-0311-4c8f-b873-5c3951355994/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 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:21:56,856 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:21:56,976 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:21:56,990 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:21:56,991 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:21:57,029 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:21:57,030 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:21:57,031 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:21:57,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:21:57,038 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:21:57,040 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:21:57,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:21:57,041 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:21:57,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:21:57,044 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:21:57,044 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:21:57,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:21:57,045 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:21:57,046 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:21:57,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:21:57,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:21:57,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:21:57,048 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:21:57,048 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:21:57,049 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:21:57,049 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:21:57,050 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:21:57,051 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:21:57,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:21:57,052 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:21:57,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:21:57,053 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:21:57,054 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:21:57,054 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:21:57,054 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:21:57,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:21:57,055 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:21:57,055 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:21:57,055 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:21:57,056 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:21:57,056 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:21:57,056 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_52886486-0311-4c8f-b873-5c3951355994/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 [2023-11-12 02:21:57,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:21:57,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:21:57,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:21:57,412 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:21:57,413 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:21:57,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-complex/safestack_relacy.i [2023-11-12 02:22:00,520 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:22:00,921 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:22:00,922 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2023-11-12 02:22:00,956 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/data/b695291e4/064f147054a74bf391ef382ab71dc9e9/FLAGac4f99483 [2023-11-12 02:22:00,972 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/data/b695291e4/064f147054a74bf391ef382ab71dc9e9 [2023-11-12 02:22:00,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:22:00,979 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:22:00,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:00,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:22:00,989 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:22:00,990 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:00,991 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c016ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:00, skipping insertion in model container [2023-11-12 02:22:00,991 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:00" (1/1) ... [2023-11-12 02:22:01,074 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:22:01,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:01,926 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:22:02,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:02,230 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:22:02,231 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:22:02,239 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:22:02,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:02 WrapperNode [2023-11-12 02:22:02,240 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:02,241 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:02,241 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:22:02,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:22:02,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:02" (1/1) ... [2023-11-12 02:22:02,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:02" (1/1) ... [2023-11-12 02:22:02,352 INFO L138 Inliner]: procedures = 481, calls = 75, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 304 [2023-11-12 02:22:02,352 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:02,353 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:22:02,353 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:22:02,354 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:22:02,364 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:02" (1/1) ... [2023-11-12 02:22:02,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:02" (1/1) ... [2023-11-12 02:22:02,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:02" (1/1) ... [2023-11-12 02:22:02,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:02" (1/1) ... [2023-11-12 02:22:02,388 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:02" (1/1) ... [2023-11-12 02:22:02,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:02" (1/1) ... [2023-11-12 02:22:02,399 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:02" (1/1) ... [2023-11-12 02:22:02,403 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:02" (1/1) ... [2023-11-12 02:22:02,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:22:02,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:22:02,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:22:02,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:22:02,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:02" (1/1) ... [2023-11-12 02:22:02,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:02,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:02,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:22:02,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:22:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:22:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:22:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:22:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:22:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:22:02,519 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-12 02:22:02,519 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-12 02:22:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:22:02,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:22:02,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:22:02,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:22:02,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:22:02,525 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 02:22:02,846 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:22:02,848 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:22:03,351 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:22:03,429 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:22:03,430 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-12 02:22:03,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:03 BoogieIcfgContainer [2023-11-12 02:22:03,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:22:03,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:22:03,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:22:03,439 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:22:03,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:22:00" (1/3) ... [2023-11-12 02:22:03,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31201766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:03, skipping insertion in model container [2023-11-12 02:22:03,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:02" (2/3) ... [2023-11-12 02:22:03,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31201766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:03, skipping insertion in model container [2023-11-12 02:22:03,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:03" (3/3) ... [2023-11-12 02:22:03,443 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2023-11-12 02:22:03,453 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:22:03,464 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:22:03,464 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-12 02:22:03,464 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:22:03,583 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:22:03,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 313 transitions, 633 flow [2023-11-12 02:22:03,815 INFO L124 PetriNetUnfolderBase]: 20/328 cut-off events. [2023-11-12 02:22:03,815 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:22:03,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 328 events. 20/328 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 607 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 220. Up to 4 conditions per place. [2023-11-12 02:22:03,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 313 transitions, 633 flow [2023-11-12 02:22:03,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 309 transitions, 625 flow [2023-11-12 02:22:03,838 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:22:03,858 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 295 places, 309 transitions, 625 flow [2023-11-12 02:22:03,863 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 295 places, 309 transitions, 625 flow [2023-11-12 02:22:03,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 309 transitions, 625 flow [2023-11-12 02:22:03,968 INFO L124 PetriNetUnfolderBase]: 19/324 cut-off events. [2023-11-12 02:22:03,968 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:22:03,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 324 events. 19/324 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 589 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 220. Up to 4 conditions per place. [2023-11-12 02:22:03,981 INFO L119 LiptonReduction]: Number of co-enabled transitions 9800 [2023-11-12 02:22:14,737 INFO L134 LiptonReduction]: Checked pairs total: 10637 [2023-11-12 02:22:14,738 INFO L136 LiptonReduction]: Total number of compositions: 323 [2023-11-12 02:22:14,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:22:14,760 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;@4b26eee5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:22:14,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-12 02:22:14,763 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:22:14,763 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:22:14,763 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:22:14,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:14,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:22:14,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 02:22:14,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:14,770 INFO L85 PathProgramCache]: Analyzing trace with hash 43512, now seen corresponding path program 1 times [2023-11-12 02:22:14,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:14,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672696951] [2023-11-12 02:22:14,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:14,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:15,249 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 02:22:15,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:15,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672696951] [2023-11-12 02:22:15,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672696951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:15,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:15,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:15,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100655113] [2023-11-12 02:22:15,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:15,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:15,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:15,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:15,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:15,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 636 [2023-11-12 02:22:15,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 53 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states 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 02:22:15,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:15,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 636 [2023-11-12 02:22:15,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:15,529 INFO L124 PetriNetUnfolderBase]: 147/294 cut-off events. [2023-11-12 02:22:15,529 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:22:15,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 294 events. 147/294 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 992 event pairs, 110 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 566. Up to 291 conditions per place. [2023-11-12 02:22:15,534 INFO L140 encePairwiseOnDemand]: 623/636 looper letters, 39 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-12 02:22:15,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 173 flow [2023-11-12 02:22:15,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:15,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:15,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 901 transitions. [2023-11-12 02:22:15,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-11-12 02:22:15,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 901 transitions. [2023-11-12 02:22:15,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 901 transitions. [2023-11-12 02:22:15,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:15,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 901 transitions. [2023-11-12 02:22:15,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states 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 02:22:15,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states 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 02:22:15,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states 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 02:22:15,600 INFO L175 Difference]: Start difference. First operand has 46 places, 53 transitions, 113 flow. Second operand 3 states and 901 transitions. [2023-11-12 02:22:15,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 173 flow [2023-11-12 02:22:15,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:22:15,608 INFO L231 Difference]: Finished difference. Result has 40 places, 42 transitions, 95 flow [2023-11-12 02:22:15,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=40, PETRI_TRANSITIONS=42} [2023-11-12 02:22:15,614 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-11-12 02:22:15,615 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 42 transitions, 95 flow [2023-11-12 02:22:15,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states 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 02:22:15,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:15,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:22:15,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:22:15,617 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 02:22:15,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:15,617 INFO L85 PathProgramCache]: Analyzing trace with hash 44016, now seen corresponding path program 1 times [2023-11-12 02:22:15,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:15,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768955654] [2023-11-12 02:22:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:15,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:15,770 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 02:22:15,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:15,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768955654] [2023-11-12 02:22:15,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768955654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:15,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:15,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:15,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129360950] [2023-11-12 02:22:15,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:15,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:15,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:15,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:15,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:15,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 636 [2023-11-12 02:22:15,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states 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 02:22:15,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:15,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 636 [2023-11-12 02:22:15,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:15,962 INFO L124 PetriNetUnfolderBase]: 148/296 cut-off events. [2023-11-12 02:22:15,962 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:22:15,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 296 events. 148/296 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 992 event pairs, 110 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 582. Up to 295 conditions per place. [2023-11-12 02:22:15,965 INFO L140 encePairwiseOnDemand]: 632/636 looper letters, 40 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-11-12 02:22:15,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 187 flow [2023-11-12 02:22:15,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:15,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:15,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 893 transitions. [2023-11-12 02:22:15,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46802935010482183 [2023-11-12 02:22:15,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 893 transitions. [2023-11-12 02:22:15,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 893 transitions. [2023-11-12 02:22:15,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:15,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 893 transitions. [2023-11-12 02:22:15,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.6666666666667) internal successors, (893), 3 states have internal predecessors, (893), 0 states have call successors, (0), 0 states 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 02:22:15,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states 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 02:22:15,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states 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 02:22:15,985 INFO L175 Difference]: Start difference. First operand has 40 places, 42 transitions, 95 flow. Second operand 3 states and 893 transitions. [2023-11-12 02:22:15,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 187 flow [2023-11-12 02:22:15,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:15,988 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 110 flow [2023-11-12 02:22:15,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2023-11-12 02:22:15,989 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2023-11-12 02:22:15,990 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 110 flow [2023-11-12 02:22:15,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states 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 02:22:15,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:15,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:22:15,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:22:15,992 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 02:22:15,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:15,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1369266, now seen corresponding path program 1 times [2023-11-12 02:22:15,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:15,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863511888] [2023-11-12 02:22:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:15,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:16,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:16,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863511888] [2023-11-12 02:22:16,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863511888] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:16,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247356184] [2023-11-12 02:22:16,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:16,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:16,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:16,123 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:16,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:22:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:16,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:22:16,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:16,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:16,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247356184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:16,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:22:16,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-12 02:22:16,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32100968] [2023-11-12 02:22:16,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:16,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:16,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:16,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:16,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:16,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 636 [2023-11-12 02:22:16,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 283.75) internal successors, (1135), 4 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states 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 02:22:16,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:16,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 636 [2023-11-12 02:22:16,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:16,491 INFO L124 PetriNetUnfolderBase]: 148/295 cut-off events. [2023-11-12 02:22:16,491 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:22:16,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 295 events. 148/295 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 989 event pairs, 110 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 582. Up to 292 conditions per place. [2023-11-12 02:22:16,494 INFO L140 encePairwiseOnDemand]: 632/636 looper letters, 38 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-11-12 02:22:16,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 190 flow [2023-11-12 02:22:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:16,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:22:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1175 transitions. [2023-11-12 02:22:16,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46187106918238996 [2023-11-12 02:22:16,500 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1175 transitions. [2023-11-12 02:22:16,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1175 transitions. [2023-11-12 02:22:16,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:16,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1175 transitions. [2023-11-12 02:22:16,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.75) internal successors, (1175), 4 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states 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 02:22:16,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 636.0) internal successors, (3180), 5 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states 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 02:22:16,516 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 636.0) internal successors, (3180), 5 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states 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 02:22:16,517 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 110 flow. Second operand 4 states and 1175 transitions. [2023-11-12 02:22:16,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 190 flow [2023-11-12 02:22:16,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 185 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:16,520 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 109 flow [2023-11-12 02:22:16,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-11-12 02:22:16,521 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2023-11-12 02:22:16,522 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 109 flow [2023-11-12 02:22:16,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.75) internal successors, (1135), 4 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states 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 02:22:16,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:16,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:22:16,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:16,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:16,732 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 02:22:16,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:16,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1315648734, now seen corresponding path program 1 times [2023-11-12 02:22:16,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:16,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300296884] [2023-11-12 02:22:16,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:16,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:16,896 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 02:22:16,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:16,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300296884] [2023-11-12 02:22:16,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300296884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:16,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:16,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:22:16,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009458725] [2023-11-12 02:22:16,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:16,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:16,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:16,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:16,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:16,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 636 [2023-11-12 02:22:16,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 0 states 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 02:22:16,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:16,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 636 [2023-11-12 02:22:16,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:17,094 INFO L124 PetriNetUnfolderBase]: 147/294 cut-off events. [2023-11-12 02:22:17,095 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:22:17,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 294 events. 147/294 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 985 event pairs, 110 based on Foata normal form. 1/164 useless extension candidates. Maximal degree in co-relation 582. Up to 293 conditions per place. [2023-11-12 02:22:17,098 INFO L140 encePairwiseOnDemand]: 633/636 looper letters, 39 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-12 02:22:17,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 185 flow [2023-11-12 02:22:17,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:17,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 876 transitions. [2023-11-12 02:22:17,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591194968553459 [2023-11-12 02:22:17,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 876 transitions. [2023-11-12 02:22:17,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 876 transitions. [2023-11-12 02:22:17,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:17,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 876 transitions. [2023-11-12 02:22:17,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 02:22:17,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states 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 02:22:17,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states 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 02:22:17,117 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 109 flow. Second operand 3 states and 876 transitions. [2023-11-12 02:22:17,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 185 flow [2023-11-12 02:22:17,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:17,121 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 103 flow [2023-11-12 02:22:17,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2023-11-12 02:22:17,123 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2023-11-12 02:22:17,124 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 103 flow [2023-11-12 02:22:17,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 0 states 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 02:22:17,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:17,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:22:17,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:22:17,128 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 02:22:17,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:17,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2141465820, now seen corresponding path program 1 times [2023-11-12 02:22:17,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:17,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503088368] [2023-11-12 02:22:17,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:17,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:22:17,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:17,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503088368] [2023-11-12 02:22:17,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503088368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:17,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:17,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:22:17,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527175112] [2023-11-12 02:22:17,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:17,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:17,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:17,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:17,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:17,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 636 [2023-11-12 02:22:17,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states 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 02:22:17,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:17,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 636 [2023-11-12 02:22:17,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:17,449 INFO L124 PetriNetUnfolderBase]: 91/211 cut-off events. [2023-11-12 02:22:17,449 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:22:17,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 211 events. 91/211 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 786 event pairs, 22 based on Foata normal form. 1/149 useless extension candidates. Maximal degree in co-relation 400. Up to 106 conditions per place. [2023-11-12 02:22:17,451 INFO L140 encePairwiseOnDemand]: 629/636 looper letters, 62 selfloop transitions, 3 changer transitions 1/67 dead transitions. [2023-11-12 02:22:17,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 67 transitions, 285 flow [2023-11-12 02:22:17,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:17,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:17,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 901 transitions. [2023-11-12 02:22:17,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-11-12 02:22:17,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 901 transitions. [2023-11-12 02:22:17,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 901 transitions. [2023-11-12 02:22:17,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:17,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 901 transitions. [2023-11-12 02:22:17,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states 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 02:22:17,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states 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 02:22:17,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states 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 02:22:17,468 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 103 flow. Second operand 3 states and 901 transitions. [2023-11-12 02:22:17,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 67 transitions, 285 flow [2023-11-12 02:22:17,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 67 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:17,474 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 92 flow [2023-11-12 02:22:17,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2023-11-12 02:22:17,477 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -8 predicate places. [2023-11-12 02:22:17,477 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 92 flow [2023-11-12 02:22:17,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states 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 02:22:17,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:17,478 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:17,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:22:17,479 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 02:22:17,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:17,479 INFO L85 PathProgramCache]: Analyzing trace with hash 659481206, now seen corresponding path program 1 times [2023-11-12 02:22:17,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:17,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854820112] [2023-11-12 02:22:17,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:17,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:17,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:22:17,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:17,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854820112] [2023-11-12 02:22:17,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854820112] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:17,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086867820] [2023-11-12 02:22:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:17,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:17,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:17,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:17,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:22:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:17,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:22:17,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:22:17,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:22:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:22:17,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086867820] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:22:17,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:22:17,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-12 02:22:17,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622196705] [2023-11-12 02:22:17,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:22:17,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:22:17,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:17,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:22:17,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:22:17,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 636 [2023-11-12 02:22:17,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 92 flow. Second operand has 8 states, 8 states have (on average 277.5) internal successors, (2220), 8 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states 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 02:22:17,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:17,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 636 [2023-11-12 02:22:17,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:18,179 INFO L124 PetriNetUnfolderBase]: 91/189 cut-off events. [2023-11-12 02:22:18,179 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-11-12 02:22:18,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 189 events. 91/189 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 524 event pairs, 66 based on Foata normal form. 1/150 useless extension candidates. Maximal degree in co-relation 415. Up to 187 conditions per place. [2023-11-12 02:22:18,181 INFO L140 encePairwiseOnDemand]: 633/636 looper letters, 34 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2023-11-12 02:22:18,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 38 transitions, 170 flow [2023-11-12 02:22:18,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:22:18,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1142 transitions. [2023-11-12 02:22:18,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488993710691824 [2023-11-12 02:22:18,188 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1142 transitions. [2023-11-12 02:22:18,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1142 transitions. [2023-11-12 02:22:18,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:18,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1142 transitions. [2023-11-12 02:22:18,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.5) internal successors, (1142), 4 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 02:22:18,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 636.0) internal successors, (3180), 5 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states 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 02:22:18,201 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 636.0) internal successors, (3180), 5 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states 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 02:22:18,201 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 92 flow. Second operand 4 states and 1142 transitions. [2023-11-12 02:22:18,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 38 transitions, 170 flow [2023-11-12 02:22:18,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:18,203 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 105 flow [2023-11-12 02:22:18,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-11-12 02:22:18,205 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-11-12 02:22:18,205 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 105 flow [2023-11-12 02:22:18,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.5) internal successors, (2220), 8 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states 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 02:22:18,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:18,207 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:22:18,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:18,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:18,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 02:22:18,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:18,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1003618744, now seen corresponding path program 2 times [2023-11-12 02:22:18,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:18,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635306567] [2023-11-12 02:22:18,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:18,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:22:18,474 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:22:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:22:18,558 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:22:18,559 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:22:18,560 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-12 02:22:18,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-12 02:22:18,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-12 02:22:18,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-12 02:22:18,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-12 02:22:18,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-12 02:22:18,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-12 02:22:18,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-12 02:22:18,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-12 02:22:18,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-12 02:22:18,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-12 02:22:18,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-12 02:22:18,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-11-12 02:22:18,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-11-12 02:22:18,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-12 02:22:18,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-12 02:22:18,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-12 02:22:18,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-12 02:22:18,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-12 02:22:18,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-12 02:22:18,574 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-12 02:22:18,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:22:18,574 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-12 02:22:18,578 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:22:18,579 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:22:18,688 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:22:18,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 484 places, 511 transitions, 1038 flow [2023-11-12 02:22:18,863 INFO L124 PetriNetUnfolderBase]: 38/576 cut-off events. [2023-11-12 02:22:18,863 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:22:18,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 576 events. 38/576 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1928 event pairs, 0 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 434. Up to 8 conditions per place. [2023-11-12 02:22:18,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 484 places, 511 transitions, 1038 flow [2023-11-12 02:22:18,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 484 places, 511 transitions, 1038 flow [2023-11-12 02:22:18,886 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:22:18,886 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 484 places, 511 transitions, 1038 flow [2023-11-12 02:22:18,887 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 484 places, 511 transitions, 1038 flow [2023-11-12 02:22:18,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 484 places, 511 transitions, 1038 flow [2023-11-12 02:22:19,081 INFO L124 PetriNetUnfolderBase]: 38/576 cut-off events. [2023-11-12 02:22:19,082 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:22:19,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 576 events. 38/576 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1928 event pairs, 0 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 434. Up to 8 conditions per place. [2023-11-12 02:22:19,148 INFO L119 LiptonReduction]: Number of co-enabled transitions 103880 [2023-11-12 02:22:34,734 INFO L134 LiptonReduction]: Checked pairs total: 107023 [2023-11-12 02:22:34,735 INFO L136 LiptonReduction]: Total number of compositions: 508 [2023-11-12 02:22:34,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:22:34,737 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;@4b26eee5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:22:34,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-12 02:22:34,739 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:22:34,739 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:22:34,740 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:22:34,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:34,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:22:34,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:22:34,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:34,741 INFO L85 PathProgramCache]: Analyzing trace with hash 82135, now seen corresponding path program 1 times [2023-11-12 02:22:34,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:34,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723148498] [2023-11-12 02:22:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:34,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:34,798 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 02:22:34,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:34,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723148498] [2023-11-12 02:22:34,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723148498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:34,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:34,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:34,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723964689] [2023-11-12 02:22:34,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:34,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:34,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:34,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:34,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:34,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 461 out of 1019 [2023-11-12 02:22:34,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 99 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 461.6666666666667) internal successors, (1385), 3 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states 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 02:22:34,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:34,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 461 of 1019 [2023-11-12 02:22:34,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:37,713 INFO L124 PetriNetUnfolderBase]: 14062/20601 cut-off events. [2023-11-12 02:22:37,714 INFO L125 PetriNetUnfolderBase]: For 234/234 co-relation queries the response was YES. [2023-11-12 02:22:37,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41282 conditions, 20601 events. 14062/20601 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 124218 event pairs, 11301 based on Foata normal form. 0/12826 useless extension candidates. Maximal degree in co-relation 34211. Up to 20532 conditions per place. [2023-11-12 02:22:37,871 INFO L140 encePairwiseOnDemand]: 1004/1019 looper letters, 80 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-11-12 02:22:37,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 86 transitions, 352 flow [2023-11-12 02:22:37,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1478 transitions. [2023-11-12 02:22:37,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483480536473667 [2023-11-12 02:22:37,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1478 transitions. [2023-11-12 02:22:37,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1478 transitions. [2023-11-12 02:22:37,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:37,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1478 transitions. [2023-11-12 02:22:37,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 492.6666666666667) internal successors, (1478), 3 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states 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 02:22:37,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1019.0) internal successors, (4076), 4 states have internal predecessors, (4076), 0 states have call successors, (0), 0 states 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 02:22:37,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1019.0) internal successors, (4076), 4 states have internal predecessors, (4076), 0 states have call successors, (0), 0 states 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 02:22:37,893 INFO L175 Difference]: Start difference. First operand has 83 places, 99 transitions, 214 flow. Second operand 3 states and 1478 transitions. [2023-11-12 02:22:37,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 86 transitions, 352 flow [2023-11-12 02:22:37,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 86 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:22:37,899 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 192 flow [2023-11-12 02:22:37,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1019, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=76, 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=192, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2023-11-12 02:22:37,901 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -5 predicate places. [2023-11-12 02:22:37,902 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 192 flow [2023-11-12 02:22:37,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 461.6666666666667) internal successors, (1385), 3 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states 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 02:22:37,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:37,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:22:37,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:22:37,903 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:22:37,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:37,905 INFO L85 PathProgramCache]: Analyzing trace with hash 82963, now seen corresponding path program 1 times [2023-11-12 02:22:37,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:37,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771531206] [2023-11-12 02:22:37,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:37,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:37,961 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 02:22:37,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:37,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771531206] [2023-11-12 02:22:37,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771531206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:37,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:37,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:37,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976722729] [2023-11-12 02:22:37,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:37,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:37,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:37,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:37,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:37,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 461 out of 1019 [2023-11-12 02:22:37,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 461.6666666666667) internal successors, (1385), 3 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states 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 02:22:37,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:37,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 461 of 1019 [2023-11-12 02:22:37,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:40,564 INFO L124 PetriNetUnfolderBase]: 14063/20603 cut-off events. [2023-11-12 02:22:40,565 INFO L125 PetriNetUnfolderBase]: For 234/234 co-relation queries the response was YES. [2023-11-12 02:22:40,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41290 conditions, 20603 events. 14063/20603 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 124183 event pairs, 11301 based on Foata normal form. 0/12829 useless extension candidates. Maximal degree in co-relation 41270. Up to 20536 conditions per place. [2023-11-12 02:22:40,676 INFO L140 encePairwiseOnDemand]: 1015/1019 looper letters, 81 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2023-11-12 02:22:40,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 88 transitions, 366 flow [2023-11-12 02:22:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:40,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:40,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1468 transitions. [2023-11-12 02:22:40,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48020935557736344 [2023-11-12 02:22:40,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1468 transitions. [2023-11-12 02:22:40,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1468 transitions. [2023-11-12 02:22:40,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:40,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1468 transitions. [2023-11-12 02:22:40,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 489.3333333333333) internal successors, (1468), 3 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states 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 02:22:40,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1019.0) internal successors, (4076), 4 states have internal predecessors, (4076), 0 states have call successors, (0), 0 states 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 02:22:40,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1019.0) internal successors, (4076), 4 states have internal predecessors, (4076), 0 states have call successors, (0), 0 states 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 02:22:40,702 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 192 flow. Second operand 3 states and 1468 transitions. [2023-11-12 02:22:40,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 88 transitions, 366 flow [2023-11-12 02:22:40,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 360 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:40,709 INFO L231 Difference]: Finished difference. Result has 79 places, 88 transitions, 207 flow [2023-11-12 02:22:40,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1019, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=207, PETRI_PLACES=79, PETRI_TRANSITIONS=88} [2023-11-12 02:22:40,711 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -4 predicate places. [2023-11-12 02:22:40,711 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 88 transitions, 207 flow [2023-11-12 02:22:40,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 461.6666666666667) internal successors, (1385), 3 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states 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 02:22:40,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:40,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:22:40,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:22:40,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:22:40,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:40,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2579114, now seen corresponding path program 1 times [2023-11-12 02:22:40,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:40,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657374820] [2023-11-12 02:22:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:40,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:40,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:40,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657374820] [2023-11-12 02:22:40,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657374820] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:40,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939928077] [2023-11-12 02:22:40,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:40,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:40,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:40,792 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:40,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:22:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:40,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:22:40,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:41,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:41,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:41,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939928077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:41,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:22:41,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-12 02:22:41,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637322970] [2023-11-12 02:22:41,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:41,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:41,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:41,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:41,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:41,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 461 out of 1019 [2023-11-12 02:22:41,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 88 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 461.75) internal successors, (1847), 4 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states 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 02:22:41,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:41,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 461 of 1019 [2023-11-12 02:22:41,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:43,439 INFO L124 PetriNetUnfolderBase]: 14063/20602 cut-off events. [2023-11-12 02:22:43,440 INFO L125 PetriNetUnfolderBase]: For 234/234 co-relation queries the response was YES. [2023-11-12 02:22:43,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41293 conditions, 20602 events. 14063/20602 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 124217 event pairs, 11301 based on Foata normal form. 0/12827 useless extension candidates. Maximal degree in co-relation 41270. Up to 20533 conditions per place. [2023-11-12 02:22:43,577 INFO L140 encePairwiseOnDemand]: 1015/1019 looper letters, 79 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2023-11-12 02:22:43,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 87 transitions, 369 flow [2023-11-12 02:22:43,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:43,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:22:43,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1928 transitions. [2023-11-12 02:22:43,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730127576054956 [2023-11-12 02:22:43,587 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1928 transitions. [2023-11-12 02:22:43,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1928 transitions. [2023-11-12 02:22:43,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:43,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1928 transitions. [2023-11-12 02:22:43,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states 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 02:22:43,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1019.0) internal successors, (5095), 5 states have internal predecessors, (5095), 0 states have call successors, (0), 0 states 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 02:22:43,625 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1019.0) internal successors, (5095), 5 states have internal predecessors, (5095), 0 states have call successors, (0), 0 states 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 02:22:43,625 INFO L175 Difference]: Start difference. First operand has 79 places, 88 transitions, 207 flow. Second operand 4 states and 1928 transitions. [2023-11-12 02:22:43,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 87 transitions, 369 flow [2023-11-12 02:22:43,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 87 transitions, 364 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:43,630 INFO L231 Difference]: Finished difference. Result has 80 places, 87 transitions, 206 flow [2023-11-12 02:22:43,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1019, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=80, PETRI_TRANSITIONS=87} [2023-11-12 02:22:43,632 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -3 predicate places. [2023-11-12 02:22:43,633 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 87 transitions, 206 flow [2023-11-12 02:22:43,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 461.75) internal successors, (1847), 4 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states 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 02:22:43,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:43,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:22:43,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:43,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52886486-0311-4c8f-b873-5c3951355994/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 02:22:43,840 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:22:43,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:43,840 INFO L85 PathProgramCache]: Analyzing trace with hash -466865237, now seen corresponding path program 1 times [2023-11-12 02:22:43,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:43,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55103202] [2023-11-12 02:22:43,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:43,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:43,936 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 02:22:43,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:43,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55103202] [2023-11-12 02:22:43,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55103202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:43,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:43,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:22:43,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358028269] [2023-11-12 02:22:43,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:43,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:43,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:43,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:43,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:43,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 456 out of 1019 [2023-11-12 02:22:43,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 87 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 457.6666666666667) internal successors, (1373), 3 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states 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 02:22:43,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:43,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 456 of 1019 [2023-11-12 02:22:43,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand