./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a8bcba962b15df67a0e136eef2e702f216cc120b7626a7b8dc8877f6ecaf3765 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:54:01,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:54:01,641 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:54:01,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:54:01,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:54:01,682 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:54:01,683 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:54:01,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:54:01,685 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:54:01,686 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:54:01,687 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:54:01,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:54:01,689 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:54:01,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:54:01,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:54:01,691 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:54:01,692 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:54:01,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:54:01,693 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:54:01,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:54:01,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:54:01,696 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:54:01,697 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:54:01,697 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:54:01,698 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:54:01,699 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:54:01,700 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:54:01,700 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:54:01,701 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:54:01,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:54:01,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:54:01,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:54:01,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:54:01,705 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:54:01,706 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:54:01,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:54:01,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:54:01,708 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:54:01,708 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:54:01,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:54:01,709 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:54:01,710 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_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8bcba962b15df67a0e136eef2e702f216cc120b7626a7b8dc8877f6ecaf3765 [2023-11-06 22:54:02,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:54:02,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:54:02,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:54:02,115 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:54:02,116 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:54:02,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i [2023-11-06 22:54:05,981 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:54:06,374 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:54:06,375 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i [2023-11-06 22:54:06,415 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/data/0409aa8c5/f3d94513dd1b49f2a1fb4eb44a375be1/FLAG640f81937 [2023-11-06 22:54:06,440 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/data/0409aa8c5/f3d94513dd1b49f2a1fb4eb44a375be1 [2023-11-06 22:54:06,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:54:06,452 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:54:06,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:54:06,459 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:54:06,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:54:06,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:54:06" (1/1) ... [2023-11-06 22:54:06,468 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cba8ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:06, skipping insertion in model container [2023-11-06 22:54:06,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:54:06" (1/1) ... [2023-11-06 22:54:06,547 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:54:07,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:54:07,049 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:54:07,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:54:07,161 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:54:07,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:07 WrapperNode [2023-11-06 22:54:07,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:54:07,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:54:07,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:54:07,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:54:07,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:07" (1/1) ... [2023-11-06 22:54:07,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:07" (1/1) ... [2023-11-06 22:54:07,221 INFO L138 Inliner]: procedures = 171, calls = 27, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 95 [2023-11-06 22:54:07,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:54:07,222 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:54:07,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:54:07,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:54:07,235 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:07" (1/1) ... [2023-11-06 22:54:07,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:07" (1/1) ... [2023-11-06 22:54:07,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:07" (1/1) ... [2023-11-06 22:54:07,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:07" (1/1) ... [2023-11-06 22:54:07,250 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:07" (1/1) ... [2023-11-06 22:54:07,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:07" (1/1) ... [2023-11-06 22:54:07,258 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:07" (1/1) ... [2023-11-06 22:54:07,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:07" (1/1) ... [2023-11-06 22:54:07,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:54:07,265 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:54:07,266 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:54:07,266 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:54:07,267 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:07" (1/1) ... [2023-11-06 22:54:07,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:54:07,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:54:07,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:54:07,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:54:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:54:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-06 22:54:07,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-06 22:54:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:54:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:54:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:54:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:54:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:54:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:54:07,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:54:07,370 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:54:07,541 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:54:07,544 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:54:07,810 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:54:08,027 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:54:08,032 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:54:08,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:54:08 BoogieIcfgContainer [2023-11-06 22:54:08,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:54:08,039 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:54:08,039 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:54:08,043 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:54:08,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:54:06" (1/3) ... [2023-11-06 22:54:08,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7f4f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:54:08, skipping insertion in model container [2023-11-06 22:54:08,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:07" (2/3) ... [2023-11-06 22:54:08,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7f4f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:54:08, skipping insertion in model container [2023-11-06 22:54:08,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:54:08" (3/3) ... [2023-11-06 22:54:08,048 INFO L112 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur.i [2023-11-06 22:54:08,060 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:54:08,075 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:54:08,076 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-06 22:54:08,076 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:54:08,176 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:54:08,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 93 transitions, 190 flow [2023-11-06 22:54:08,297 INFO L124 PetriNetUnfolderBase]: 8/104 cut-off events. [2023-11-06 22:54:08,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:54:08,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 104 events. 8/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2023-11-06 22:54:08,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 93 transitions, 190 flow [2023-11-06 22:54:08,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 93 transitions, 190 flow [2023-11-06 22:54:08,319 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:54:08,332 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 93 transitions, 190 flow [2023-11-06 22:54:08,336 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 93 transitions, 190 flow [2023-11-06 22:54:08,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 93 transitions, 190 flow [2023-11-06 22:54:08,376 INFO L124 PetriNetUnfolderBase]: 8/104 cut-off events. [2023-11-06 22:54:08,376 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:54:08,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 104 events. 8/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2023-11-06 22:54:08,382 INFO L119 LiptonReduction]: Number of co-enabled transitions 1820 [2023-11-06 22:54:11,286 INFO L134 LiptonReduction]: Checked pairs total: 2598 [2023-11-06 22:54:11,286 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-11-06 22:54:11,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:54:11,315 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ade03eb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:54:11,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-06 22:54:11,320 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:54:11,321 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-06 22:54:11,321 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:54:11,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:11,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:54:11,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:54:11,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:11,329 INFO L85 PathProgramCache]: Analyzing trace with hash 469463466, now seen corresponding path program 1 times [2023-11-06 22:54:11,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:11,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987565864] [2023-11-06 22:54:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:11,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:11,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:11,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987565864] [2023-11-06 22:54:11,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987565864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:11,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:11,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:54:11,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247383914] [2023-11-06 22:54:11,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:11,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:54:11,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:11,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:54:11,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:54:11,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 181 [2023-11-06 22:54:11,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:11,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:11,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 181 [2023-11-06 22:54:11,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:11,719 INFO L124 PetriNetUnfolderBase]: 35/89 cut-off events. [2023-11-06 22:54:11,720 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:54:11,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 89 events. 35/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 266 event pairs, 29 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 164. Up to 85 conditions per place. [2023-11-06 22:54:11,723 INFO L140 encePairwiseOnDemand]: 176/181 looper letters, 20 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2023-11-06 22:54:11,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 90 flow [2023-11-06 22:54:11,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:54:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:54:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 175 transitions. [2023-11-06 22:54:11,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48342541436464087 [2023-11-06 22:54:11,770 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 175 transitions. [2023-11-06 22:54:11,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 175 transitions. [2023-11-06 22:54:11,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:11,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 175 transitions. [2023-11-06 22:54:11,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:11,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:11,788 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:11,791 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 60 flow. Second operand 2 states and 175 transitions. [2023-11-06 22:54:11,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 90 flow [2023-11-06 22:54:11,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 90 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:54:11,797 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 50 flow [2023-11-06 22:54:11,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2023-11-06 22:54:11,805 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -4 predicate places. [2023-11-06 22:54:11,805 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 50 flow [2023-11-06 22:54:11,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:11,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:11,806 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:54:11,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:54:11,807 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:54:11,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:11,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1668557386, now seen corresponding path program 1 times [2023-11-06 22:54:11,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:11,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115447051] [2023-11-06 22:54:11,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:11,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:54:11,857 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:54:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:54:11,932 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:54:11,932 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:54:11,935 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-06 22:54:11,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-06 22:54:11,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-06 22:54:11,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-06 22:54:11,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-06 22:54:11,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-06 22:54:11,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-06 22:54:11,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-06 22:54:11,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-06 22:54:11,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-06 22:54:11,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-06 22:54:11,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-06 22:54:11,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-11-06 22:54:11,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-11-06 22:54:11,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-06 22:54:11,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-06 22:54:11,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-06 22:54:11,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-06 22:54:11,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-06 22:54:11,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-06 22:54:11,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-06 22:54:11,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:54:11,957 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:54:11,960 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:54:11,960 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:54:12,019 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:54:12,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 159 transitions, 328 flow [2023-11-06 22:54:12,098 INFO L124 PetriNetUnfolderBase]: 15/183 cut-off events. [2023-11-06 22:54:12,098 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:54:12,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 183 events. 15/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 506 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 143. Up to 6 conditions per place. [2023-11-06 22:54:12,107 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 159 transitions, 328 flow [2023-11-06 22:54:12,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 159 transitions, 328 flow [2023-11-06 22:54:12,113 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:54:12,116 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 159 transitions, 328 flow [2023-11-06 22:54:12,118 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 159 transitions, 328 flow [2023-11-06 22:54:12,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 159 transitions, 328 flow [2023-11-06 22:54:12,176 INFO L124 PetriNetUnfolderBase]: 15/183 cut-off events. [2023-11-06 22:54:12,176 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:54:12,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 183 events. 15/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 506 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 143. Up to 6 conditions per place. [2023-11-06 22:54:12,191 INFO L119 LiptonReduction]: Number of co-enabled transitions 12220 [2023-11-06 22:54:14,713 INFO L134 LiptonReduction]: Checked pairs total: 35572 [2023-11-06 22:54:14,713 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-11-06 22:54:14,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:54:14,726 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ade03eb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:54:14,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-06 22:54:14,730 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:54:14,730 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-06 22:54:14,730 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:54:14,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:14,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:14,743 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-06 22:54:14,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:14,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1666481917, now seen corresponding path program 1 times [2023-11-06 22:54:14,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:14,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909234378] [2023-11-06 22:54:14,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:14,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:14,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:14,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909234378] [2023-11-06 22:54:14,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909234378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:14,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:14,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:54:14,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303651307] [2023-11-06 22:54:14,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:14,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:14,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:14,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:14,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:14,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 289 [2023-11-06 22:54:14,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:14,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:14,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 289 [2023-11-06 22:54:14,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:15,655 INFO L124 PetriNetUnfolderBase]: 1291/2320 cut-off events. [2023-11-06 22:54:15,656 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-11-06 22:54:15,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4533 conditions, 2320 events. 1291/2320 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 15071 event pairs, 619 based on Foata normal form. 0/1703 useless extension candidates. Maximal degree in co-relation 4050. Up to 2121 conditions per place. [2023-11-06 22:54:15,684 INFO L140 encePairwiseOnDemand]: 268/289 looper letters, 46 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-11-06 22:54:15,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 235 flow [2023-11-06 22:54:15,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:15,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:15,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-11-06 22:54:15,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201845444059977 [2023-11-06 22:54:15,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-11-06 22:54:15,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-11-06 22:54:15,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:15,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-11-06 22:54:15,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:15,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:15,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:15,712 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 150 flow. Second operand 3 states and 451 transitions. [2023-11-06 22:54:15,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 235 flow [2023-11-06 22:54:15,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 61 transitions, 235 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:54:15,717 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 149 flow [2023-11-06 22:54:15,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-11-06 22:54:15,719 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -9 predicate places. [2023-11-06 22:54:15,719 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 149 flow [2023-11-06 22:54:15,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:15,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:15,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:15,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:54:15,721 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-06 22:54:15,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:15,722 INFO L85 PathProgramCache]: Analyzing trace with hash -533651064, now seen corresponding path program 1 times [2023-11-06 22:54:15,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:15,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969393259] [2023-11-06 22:54:15,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:15,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:16,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:16,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969393259] [2023-11-06 22:54:16,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969393259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:16,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:16,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:54:16,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608273168] [2023-11-06 22:54:16,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:16,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:54:16,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:16,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:54:16,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:54:16,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 289 [2023-11-06 22:54:16,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:16,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:16,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 289 [2023-11-06 22:54:16,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:16,685 INFO L124 PetriNetUnfolderBase]: 1486/2736 cut-off events. [2023-11-06 22:54:16,685 INFO L125 PetriNetUnfolderBase]: For 219/223 co-relation queries the response was YES. [2023-11-06 22:54:16,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5756 conditions, 2736 events. 1486/2736 cut-off events. For 219/223 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 18241 event pairs, 375 based on Foata normal form. 4/2059 useless extension candidates. Maximal degree in co-relation 4121. Up to 2265 conditions per place. [2023-11-06 22:54:16,721 INFO L140 encePairwiseOnDemand]: 279/289 looper letters, 61 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2023-11-06 22:54:16,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 78 transitions, 343 flow [2023-11-06 22:54:16,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:54:16,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:54:16,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 544 transitions. [2023-11-06 22:54:16,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2023-11-06 22:54:16,739 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 544 transitions. [2023-11-06 22:54:16,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 544 transitions. [2023-11-06 22:54:16,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:16,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 544 transitions. [2023-11-06 22:54:16,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:16,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:16,748 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:16,748 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 149 flow. Second operand 4 states and 544 transitions. [2023-11-06 22:54:16,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 78 transitions, 343 flow [2023-11-06 22:54:16,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:16,754 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 186 flow [2023-11-06 22:54:16,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-11-06 22:54:16,758 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -6 predicate places. [2023-11-06 22:54:16,759 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 186 flow [2023-11-06 22:54:16,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:16,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:16,760 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:54:16,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:54:16,760 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-06 22:54:16,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:16,761 INFO L85 PathProgramCache]: Analyzing trace with hash 445548978, now seen corresponding path program 1 times [2023-11-06 22:54:16,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:16,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381346713] [2023-11-06 22:54:16,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:16,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:54:16,796 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:54:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:54:16,810 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:54:16,811 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:54:16,811 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-11-06 22:54:16,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2023-11-06 22:54:16,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2023-11-06 22:54:16,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2023-11-06 22:54:16,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2023-11-06 22:54:16,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2023-11-06 22:54:16,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2023-11-06 22:54:16,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2023-11-06 22:54:16,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2023-11-06 22:54:16,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2023-11-06 22:54:16,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2023-11-06 22:54:16,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2023-11-06 22:54:16,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2023-11-06 22:54:16,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2023-11-06 22:54:16,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2023-11-06 22:54:16,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2023-11-06 22:54:16,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2023-11-06 22:54:16,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2023-11-06 22:54:16,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2023-11-06 22:54:16,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2023-11-06 22:54:16,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2023-11-06 22:54:16,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2023-11-06 22:54:16,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2023-11-06 22:54:16,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2023-11-06 22:54:16,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2023-11-06 22:54:16,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2023-11-06 22:54:16,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2023-11-06 22:54:16,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2023-11-06 22:54:16,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2023-11-06 22:54:16,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2023-11-06 22:54:16,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2023-11-06 22:54:16,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:54:16,821 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 22:54:16,822 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:54:16,822 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:54:16,910 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:54:16,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 225 transitions, 468 flow [2023-11-06 22:54:16,986 INFO L124 PetriNetUnfolderBase]: 22/262 cut-off events. [2023-11-06 22:54:16,986 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:54:16,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 262 events. 22/262 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 897 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 208. Up to 8 conditions per place. [2023-11-06 22:54:16,992 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 225 transitions, 468 flow [2023-11-06 22:54:16,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 225 transitions, 468 flow [2023-11-06 22:54:16,998 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:54:16,999 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 225 transitions, 468 flow [2023-11-06 22:54:16,999 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 225 transitions, 468 flow [2023-11-06 22:54:16,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 225 transitions, 468 flow [2023-11-06 22:54:17,059 INFO L124 PetriNetUnfolderBase]: 22/262 cut-off events. [2023-11-06 22:54:17,059 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:54:17,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 262 events. 22/262 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 897 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 208. Up to 8 conditions per place. [2023-11-06 22:54:17,091 INFO L119 LiptonReduction]: Number of co-enabled transitions 31200 [2023-11-06 22:54:20,473 INFO L134 LiptonReduction]: Checked pairs total: 93607 [2023-11-06 22:54:20,474 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-11-06 22:54:20,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:54:20,488 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ade03eb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:54:20,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-11-06 22:54:20,493 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:54:20,495 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-06 22:54:20,496 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:54:20,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:20,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:20,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-06 22:54:20,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:20,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1001322863, now seen corresponding path program 1 times [2023-11-06 22:54:20,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:20,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907791703] [2023-11-06 22:54:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:20,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:20,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:20,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907791703] [2023-11-06 22:54:20,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907791703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:20,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:20,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:54:20,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167046015] [2023-11-06 22:54:20,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:20,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:20,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:20,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:20,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:20,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 409 [2023-11-06 22:54:20,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 100 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:20,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:20,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 409 [2023-11-06 22:54:20,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:30,598 INFO L124 PetriNetUnfolderBase]: 48516/69643 cut-off events. [2023-11-06 22:54:30,598 INFO L125 PetriNetUnfolderBase]: For 2605/2605 co-relation queries the response was YES. [2023-11-06 22:54:30,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138465 conditions, 69643 events. 48516/69643 cut-off events. For 2605/2605 co-relation queries the response was YES. Maximal size of possible extension queue 2932. Compared 537039 event pairs, 29775 based on Foata normal form. 0/48435 useless extension candidates. Maximal degree in co-relation 118771. Up to 67004 conditions per place. [2023-11-06 22:54:31,231 INFO L140 encePairwiseOnDemand]: 381/409 looper letters, 72 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2023-11-06 22:54:31,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 366 flow [2023-11-06 22:54:31,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:31,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 637 transitions. [2023-11-06 22:54:31,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191524042379788 [2023-11-06 22:54:31,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 637 transitions. [2023-11-06 22:54:31,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 637 transitions. [2023-11-06 22:54:31,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:31,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 637 transitions. [2023-11-06 22:54:31,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:31,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:31,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:31,247 INFO L175 Difference]: Start difference. First operand has 99 places, 100 transitions, 218 flow. Second operand 3 states and 637 transitions. [2023-11-06 22:54:31,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 366 flow [2023-11-06 22:54:31,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 92 transitions, 362 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-06 22:54:31,253 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 224 flow [2023-11-06 22:54:31,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2023-11-06 22:54:31,254 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -12 predicate places. [2023-11-06 22:54:31,255 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 224 flow [2023-11-06 22:54:31,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:31,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:31,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:31,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:54:31,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-06 22:54:31,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash -198553459, now seen corresponding path program 1 times [2023-11-06 22:54:31,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:31,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730315276] [2023-11-06 22:54:31,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:31,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:31,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:31,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:31,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730315276] [2023-11-06 22:54:31,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730315276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:31,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:31,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:54:31,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143467594] [2023-11-06 22:54:31,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:31,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:54:31,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:31,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:54:31,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:54:31,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 409 [2023-11-06 22:54:31,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:31,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:31,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 409 [2023-11-06 22:54:31,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:39,931 INFO L124 PetriNetUnfolderBase]: 51863/75068 cut-off events. [2023-11-06 22:54:39,931 INFO L125 PetriNetUnfolderBase]: For 4490/4502 co-relation queries the response was YES. [2023-11-06 22:54:40,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160064 conditions, 75068 events. 51863/75068 cut-off events. For 4490/4502 co-relation queries the response was YES. Maximal size of possible extension queue 3052. Compared 584514 event pairs, 20634 based on Foata normal form. 12/52717 useless extension candidates. Maximal degree in co-relation 144425. Up to 70477 conditions per place. [2023-11-06 22:54:40,605 INFO L140 encePairwiseOnDemand]: 398/409 looper letters, 91 selfloop transitions, 8 changer transitions 0/114 dead transitions. [2023-11-06 22:54:40,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 114 transitions, 514 flow [2023-11-06 22:54:40,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:54:40,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:54:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 776 transitions. [2023-11-06 22:54:40,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743276283618582 [2023-11-06 22:54:40,611 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 776 transitions. [2023-11-06 22:54:40,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 776 transitions. [2023-11-06 22:54:40,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:40,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 776 transitions. [2023-11-06 22:54:40,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:40,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 409.0) internal successors, (2045), 5 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:40,622 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 409.0) internal successors, (2045), 5 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:40,623 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 224 flow. Second operand 4 states and 776 transitions. [2023-11-06 22:54:40,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 114 transitions, 514 flow [2023-11-06 22:54:40,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 114 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:40,646 INFO L231 Difference]: Finished difference. Result has 90 places, 90 transitions, 271 flow [2023-11-06 22:54:40,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=90, PETRI_TRANSITIONS=90} [2023-11-06 22:54:40,648 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -9 predicate places. [2023-11-06 22:54:40,648 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 90 transitions, 271 flow [2023-11-06 22:54:40,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:40,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:40,650 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:40,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:54:40,650 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-06 22:54:40,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:40,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1031058072, now seen corresponding path program 1 times [2023-11-06 22:54:40,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:40,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718178245] [2023-11-06 22:54:40,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:40,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:41,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:41,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:41,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718178245] [2023-11-06 22:54:41,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718178245] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:54:41,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412432235] [2023-11-06 22:54:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:41,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:54:41,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:54:41,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:54:41,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:54:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:41,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:54:41,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:54:41,323 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:54:41,388 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:54:41,389 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 22:54:41,423 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:54:41,450 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:54:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:41,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:54:41,481 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_78 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_78) |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.offset|)))) is different from false [2023-11-06 22:54:41,536 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:54:41,536 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 60 [2023-11-06 22:54:41,551 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:54:41,552 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-11-06 22:54:41,617 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 52 [2023-11-06 22:54:41,624 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-06 22:54:41,631 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-06 22:54:41,645 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 43 [2023-11-06 22:54:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-06 22:54:41,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412432235] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:54:41,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:54:41,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2023-11-06 22:54:41,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294391983] [2023-11-06 22:54:41,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:54:41,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:54:41,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:41,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:54:41,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=67, Unknown=1, NotChecked=16, Total=110 [2023-11-06 22:54:42,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 409 [2023-11-06 22:54:42,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 90 transitions, 271 flow. Second operand has 11 states, 11 states have (on average 140.8181818181818) internal successors, (1549), 11 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:42,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:42,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 409 [2023-11-06 22:54:42,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:55:00,792 INFO L124 PetriNetUnfolderBase]: 110004/160418 cut-off events. [2023-11-06 22:55:00,792 INFO L125 PetriNetUnfolderBase]: For 52281/52311 co-relation queries the response was YES. [2023-11-06 22:55:01,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387456 conditions, 160418 events. 110004/160418 cut-off events. For 52281/52311 co-relation queries the response was YES. Maximal size of possible extension queue 6402. Compared 1336705 event pairs, 15239 based on Foata normal form. 183/124651 useless extension candidates. Maximal degree in co-relation 384085. Up to 82959 conditions per place. [2023-11-06 22:55:01,931 INFO L140 encePairwiseOnDemand]: 346/409 looper letters, 401 selfloop transitions, 143 changer transitions 0/556 dead transitions. [2023-11-06 22:55:01,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 556 transitions, 2655 flow [2023-11-06 22:55:01,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:55:01,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 22:55:01,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2373 transitions. [2023-11-06 22:55:01,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463043069400038 [2023-11-06 22:55:01,944 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2373 transitions. [2023-11-06 22:55:01,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2373 transitions. [2023-11-06 22:55:01,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:55:01,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2373 transitions. [2023-11-06 22:55:01,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 182.53846153846155) internal successors, (2373), 13 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:01,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 409.0) internal successors, (5726), 14 states have internal predecessors, (5726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:01,978 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 409.0) internal successors, (5726), 14 states have internal predecessors, (5726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:01,979 INFO L175 Difference]: Start difference. First operand has 90 places, 90 transitions, 271 flow. Second operand 13 states and 2373 transitions. [2023-11-06 22:55:01,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 556 transitions, 2655 flow [2023-11-06 22:55:02,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 556 transitions, 2636 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:55:02,181 INFO L231 Difference]: Finished difference. Result has 109 places, 235 transitions, 1542 flow [2023-11-06 22:55:02,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1542, PETRI_PLACES=109, PETRI_TRANSITIONS=235} [2023-11-06 22:55:02,182 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 10 predicate places. [2023-11-06 22:55:02,183 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 235 transitions, 1542 flow [2023-11-06 22:55:02,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 140.8181818181818) internal successors, (1549), 11 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:02,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:02,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:02,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:55:02,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d323ef-630e-49d6-8808-fbd118772d72/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:55:02,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-06 22:55:02,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:02,391 INFO L85 PathProgramCache]: Analyzing trace with hash 457340297, now seen corresponding path program 1 times [2023-11-06 22:55:02,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:02,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385700491] [2023-11-06 22:55:02,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:02,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:02,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:55:02,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:02,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385700491] [2023-11-06 22:55:02,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385700491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:02,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:02,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:55:02,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159990487] [2023-11-06 22:55:02,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:02,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:55:02,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:02,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:55:02,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:55:02,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 409 [2023-11-06 22:55:02,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 235 transitions, 1542 flow. Second operand has 4 states, 4 states have (on average 170.25) internal successors, (681), 4 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:02,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:02,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 409 [2023-11-06 22:55:02,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand