./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.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_225fe968-1756-41eb-b920-f803ac2d814d/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/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_225fe968-1756-41eb-b920-f803ac2d814d/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/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_225fe968-1756-41eb-b920-f803ac2d814d/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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:07:51,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:07:51,627 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:07:51,634 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:07:51,635 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:07:51,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:07:51,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:07:51,677 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:07:51,678 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:07:51,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:07:51,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:07:51,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:07:51,686 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:07:51,688 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:07:51,688 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:07:51,689 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:07:51,689 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:07:51,690 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:07:51,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:07:51,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:07:51,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:07:51,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:07:51,692 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:07:51,692 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:07:51,693 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:07:51,693 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:07:51,693 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:07:51,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:07:51,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:07:51,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:07:51,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:51,697 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:07:51,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:07:51,698 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:07:51,698 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:07:51,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:07:51,698 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:07:51,698 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:07:51,699 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:07:51,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:07:51,699 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:07:51,700 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_225fe968-1756-41eb-b920-f803ac2d814d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 [2023-11-06 23:07:52,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:07:52,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:07:52,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:07:52,102 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:07:52,103 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:07:52,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2023-11-06 23:07:55,196 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:07:55,450 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:07:55,450 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2023-11-06 23:07:55,468 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/bin/uautomizer-verify-WvqO1wxjHP/data/440e84f6f/5b64117b8940408d8dc3f557d2ac16f0/FLAG14d4c57af [2023-11-06 23:07:55,483 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/bin/uautomizer-verify-WvqO1wxjHP/data/440e84f6f/5b64117b8940408d8dc3f557d2ac16f0 [2023-11-06 23:07:55,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:07:55,487 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:07:55,489 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:55,489 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:07:55,495 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:07:55,496 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:55" (1/1) ... [2023-11-06 23:07:55,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b2d83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:55, skipping insertion in model container [2023-11-06 23:07:55,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:55" (1/1) ... [2023-11-06 23:07:55,550 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:07:55,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:55,965 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:07:56,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:56,075 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:07:56,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:56 WrapperNode [2023-11-06 23:07:56,076 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:56,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:56,078 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:07:56,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:07:56,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:56" (1/1) ... [2023-11-06 23:07:56,111 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:56" (1/1) ... [2023-11-06 23:07:56,136 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2023-11-06 23:07:56,137 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:56,138 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:07:56,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:07:56,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:07:56,147 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:56" (1/1) ... [2023-11-06 23:07:56,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:56" (1/1) ... [2023-11-06 23:07:56,151 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:56" (1/1) ... [2023-11-06 23:07:56,156 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:56" (1/1) ... [2023-11-06 23:07:56,164 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:56" (1/1) ... [2023-11-06 23:07:56,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:56" (1/1) ... [2023-11-06 23:07:56,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:56" (1/1) ... [2023-11-06 23:07:56,173 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:56" (1/1) ... [2023-11-06 23:07:56,176 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:07:56,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:07:56,178 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:07:56,178 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:07:56,179 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:56" (1/1) ... [2023-11-06 23:07:56,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:56,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:56,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:07:56,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:07:56,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:07:56,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:07:56,269 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 23:07:56,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:07:56,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:07:56,270 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 23:07:56,270 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 23:07:56,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:07:56,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:07:56,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:07:56,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:07:56,274 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 23:07:56,421 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:07:56,423 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:07:56,663 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:07:56,672 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:07:56,672 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-06 23:07:56,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:56 BoogieIcfgContainer [2023-11-06 23:07:56,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:07:56,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:07:56,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:07:56,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:07:56,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:07:55" (1/3) ... [2023-11-06 23:07:56,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b811b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:56, skipping insertion in model container [2023-11-06 23:07:56,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:56" (2/3) ... [2023-11-06 23:07:56,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b811b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:56, skipping insertion in model container [2023-11-06 23:07:56,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:56" (3/3) ... [2023-11-06 23:07:56,686 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2023-11-06 23:07:56,696 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:07:56,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:07:56,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 23:07:56,708 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:07:56,816 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 23:07:56,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 130 transitions, 267 flow [2023-11-06 23:07:56,971 INFO L124 PetriNetUnfolderBase]: 19/172 cut-off events. [2023-11-06 23:07:56,972 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:07:56,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 172 events. 19/172 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 432 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2023-11-06 23:07:56,979 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 130 transitions, 267 flow [2023-11-06 23:07:56,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 127 transitions, 261 flow [2023-11-06 23:07:56,991 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:07:57,008 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 127 transitions, 261 flow [2023-11-06 23:07:57,012 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 127 transitions, 261 flow [2023-11-06 23:07:57,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 127 transitions, 261 flow [2023-11-06 23:07:57,102 INFO L124 PetriNetUnfolderBase]: 18/169 cut-off events. [2023-11-06 23:07:57,111 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:07:57,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 169 events. 18/169 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 430 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2023-11-06 23:07:57,119 INFO L119 LiptonReduction]: Number of co-enabled transitions 3744 [2023-11-06 23:08:01,241 INFO L134 LiptonReduction]: Checked pairs total: 5962 [2023-11-06 23:08:01,242 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-11-06 23:08:01,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:08:01,263 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;@7e5622b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:08:01,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-06 23:08:01,267 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:08:01,267 INFO L124 PetriNetUnfolderBase]: 3/14 cut-off events. [2023-11-06 23:08:01,267 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:08:01,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:01,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:08:01,268 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 23:08:01,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:01,274 INFO L85 PathProgramCache]: Analyzing trace with hash 15515192, now seen corresponding path program 1 times [2023-11-06 23:08:01,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:01,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279345386] [2023-11-06 23:08:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:01,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:01,651 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 23:08:01,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:01,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279345386] [2023-11-06 23:08:01,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279345386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:01,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:01,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:08:01,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245479138] [2023-11-06 23:08:01,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:01,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:01,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:01,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:01,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:01,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 252 [2023-11-06 23:08:01,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 39 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 23:08:01,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:01,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 252 [2023-11-06 23:08:01,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:01,884 INFO L124 PetriNetUnfolderBase]: 84/202 cut-off events. [2023-11-06 23:08:01,884 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:08:01,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 202 events. 84/202 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 780 event pairs, 66 based on Foata normal form. 8/163 useless extension candidates. Maximal degree in co-relation 381. Up to 179 conditions per place. [2023-11-06 23:08:01,893 INFO L140 encePairwiseOnDemand]: 237/252 looper letters, 35 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-11-06 23:08:01,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 40 transitions, 161 flow [2023-11-06 23:08:01,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:01,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:08:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-11-06 23:08:01,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066137566137566 [2023-11-06 23:08:01,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-11-06 23:08:01,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-11-06 23:08:01,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:01,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-11-06 23:08:01,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states 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 23:08:01,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:01,946 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:01,948 INFO L175 Difference]: Start difference. First operand has 33 places, 39 transitions, 85 flow. Second operand 3 states and 383 transitions. [2023-11-06 23:08:01,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 40 transitions, 161 flow [2023-11-06 23:08:01,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 161 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:08:01,954 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 69 flow [2023-11-06 23:08:01,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-11-06 23:08:01,960 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-11-06 23:08:01,960 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 69 flow [2023-11-06 23:08:01,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 23:08:01,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:01,961 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 23:08:01,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:08:01,962 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 23:08:01,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:01,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2025243546, now seen corresponding path program 1 times [2023-11-06 23:08:01,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:01,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929209714] [2023-11-06 23:08:01,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:01,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:08:01,991 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:08:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:08:02,026 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:08:02,026 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:08:02,028 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-06 23:08:02,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-06 23:08:02,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-06 23:08:02,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-06 23:08:02,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-06 23:08:02,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-06 23:08:02,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-06 23:08:02,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-06 23:08:02,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-06 23:08:02,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-06 23:08:02,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-06 23:08:02,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-06 23:08:02,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-06 23:08:02,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:08:02,034 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 23:08:02,037 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 23:08:02,037 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 23:08:02,063 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 23:08:02,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 168 transitions, 352 flow [2023-11-06 23:08:02,108 INFO L124 PetriNetUnfolderBase]: 34/290 cut-off events. [2023-11-06 23:08:02,108 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 23:08:02,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 290 events. 34/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 884 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 174. Up to 8 conditions per place. [2023-11-06 23:08:02,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 168 transitions, 352 flow [2023-11-06 23:08:02,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 168 transitions, 352 flow [2023-11-06 23:08:02,115 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:08:02,115 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 168 transitions, 352 flow [2023-11-06 23:08:02,116 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 168 transitions, 352 flow [2023-11-06 23:08:02,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 168 transitions, 352 flow [2023-11-06 23:08:02,181 INFO L124 PetriNetUnfolderBase]: 34/290 cut-off events. [2023-11-06 23:08:02,182 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 23:08:02,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 290 events. 34/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 884 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 174. Up to 8 conditions per place. [2023-11-06 23:08:02,196 INFO L119 LiptonReduction]: Number of co-enabled transitions 11448 [2023-11-06 23:08:06,312 INFO L134 LiptonReduction]: Checked pairs total: 26187 [2023-11-06 23:08:06,313 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-11-06 23:08:06,315 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:08:06,317 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;@7e5622b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:08:06,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-06 23:08:06,320 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:08:06,320 INFO L124 PetriNetUnfolderBase]: 3/15 cut-off events. [2023-11-06 23:08:06,321 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:08:06,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:06,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:08:06,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 23:08:06,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:06,322 INFO L85 PathProgramCache]: Analyzing trace with hash 812713638, now seen corresponding path program 1 times [2023-11-06 23:08:06,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:06,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812610051] [2023-11-06 23:08:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:06,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:06,387 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 23:08:06,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:06,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812610051] [2023-11-06 23:08:06,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812610051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:06,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:06,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:08:06,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95669778] [2023-11-06 23:08:06,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:06,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:06,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:06,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:06,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:06,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 310 [2023-11-06 23:08:06,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 67 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 23:08:06,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:06,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 310 [2023-11-06 23:08:06,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:07,390 INFO L124 PetriNetUnfolderBase]: 4435/7270 cut-off events. [2023-11-06 23:08:07,391 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-06 23:08:07,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14409 conditions, 7270 events. 4435/7270 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 47206 event pairs, 4228 based on Foata normal form. 710/5657 useless extension candidates. Maximal degree in co-relation 9668. Up to 7046 conditions per place. [2023-11-06 23:08:07,450 INFO L140 encePairwiseOnDemand]: 290/310 looper letters, 58 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-06 23:08:07,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 270 flow [2023-11-06 23:08:07,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:08:07,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 501 transitions. [2023-11-06 23:08:07,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5387096774193548 [2023-11-06 23:08:07,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 501 transitions. [2023-11-06 23:08:07,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 501 transitions. [2023-11-06 23:08:07,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:07,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 501 transitions. [2023-11-06 23:08:07,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states 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 23:08:07,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states 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 23:08:07,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states 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 23:08:07,464 INFO L175 Difference]: Start difference. First operand has 55 places, 67 transitions, 150 flow. Second operand 3 states and 501 transitions. [2023-11-06 23:08:07,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 270 flow [2023-11-06 23:08:07,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:08:07,470 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 136 flow [2023-11-06 23:08:07,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-11-06 23:08:07,472 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-11-06 23:08:07,473 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 136 flow [2023-11-06 23:08:07,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 23:08:07,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:07,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:07,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:08:07,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 23:08:07,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:07,480 INFO L85 PathProgramCache]: Analyzing trace with hash -659408478, now seen corresponding path program 1 times [2023-11-06 23:08:07,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:07,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843668318] [2023-11-06 23:08:07,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:07,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:07,579 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 23:08:07,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:07,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843668318] [2023-11-06 23:08:07,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843668318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:07,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:07,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:08:07,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080247044] [2023-11-06 23:08:07,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:07,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:07,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:07,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:07,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:07,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 310 [2023-11-06 23:08:07,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states 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 23:08:07,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:07,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 310 [2023-11-06 23:08:07,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:08,654 INFO L124 PetriNetUnfolderBase]: 5030/8684 cut-off events. [2023-11-06 23:08:08,655 INFO L125 PetriNetUnfolderBase]: For 493/493 co-relation queries the response was YES. [2023-11-06 23:08:08,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17985 conditions, 8684 events. 5030/8684 cut-off events. For 493/493 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 61187 event pairs, 1676 based on Foata normal form. 0/6662 useless extension candidates. Maximal degree in co-relation 17897. Up to 6101 conditions per place. [2023-11-06 23:08:08,722 INFO L140 encePairwiseOnDemand]: 296/310 looper letters, 76 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2023-11-06 23:08:08,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 394 flow [2023-11-06 23:08:08,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:08:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2023-11-06 23:08:08,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546236559139785 [2023-11-06 23:08:08,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2023-11-06 23:08:08,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2023-11-06 23:08:08,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:08,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2023-11-06 23:08:08,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 23:08:08,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states 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 23:08:08,731 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states 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 23:08:08,732 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 136 flow. Second operand 3 states and 508 transitions. [2023-11-06 23:08:08,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 394 flow [2023-11-06 23:08:08,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 391 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:08:08,736 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 194 flow [2023-11-06 23:08:08,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2023-11-06 23:08:08,737 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2023-11-06 23:08:08,737 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 194 flow [2023-11-06 23:08:08,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states 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 23:08:08,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:08,738 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 23:08:08,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:08:08,738 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 23:08:08,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:08,739 INFO L85 PathProgramCache]: Analyzing trace with hash -244459422, now seen corresponding path program 1 times [2023-11-06 23:08:08,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:08,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350184390] [2023-11-06 23:08:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:08,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:08,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:08,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350184390] [2023-11-06 23:08:08,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350184390] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:08,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218195547] [2023-11-06 23:08:08,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:08,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:08,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:08,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:08,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:08:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:09,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:08:09,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:09,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:08:09,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218195547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:09,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:08:09,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 23:08:09,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972296526] [2023-11-06 23:08:09,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:09,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:08:09,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:09,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:08:09,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:08:09,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 310 [2023-11-06 23:08:09,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states 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 23:08:09,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:09,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 310 [2023-11-06 23:08:09,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:10,244 INFO L124 PetriNetUnfolderBase]: 4702/8129 cut-off events. [2023-11-06 23:08:10,244 INFO L125 PetriNetUnfolderBase]: For 2054/2054 co-relation queries the response was YES. [2023-11-06 23:08:10,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19350 conditions, 8129 events. 4702/8129 cut-off events. For 2054/2054 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 57421 event pairs, 2342 based on Foata normal form. 0/6906 useless extension candidates. Maximal degree in co-relation 14350. Up to 6025 conditions per place. [2023-11-06 23:08:10,299 INFO L140 encePairwiseOnDemand]: 306/310 looper letters, 87 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2023-11-06 23:08:10,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 97 transitions, 492 flow [2023-11-06 23:08:10,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:08:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:08:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 640 transitions. [2023-11-06 23:08:10,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2023-11-06 23:08:10,302 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 640 transitions. [2023-11-06 23:08:10,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 640 transitions. [2023-11-06 23:08:10,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:10,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 640 transitions. [2023-11-06 23:08:10,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 23:08:10,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states 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 23:08:10,310 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states 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 23:08:10,311 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 194 flow. Second operand 4 states and 640 transitions. [2023-11-06 23:08:10,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 97 transitions, 492 flow [2023-11-06 23:08:10,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 97 transitions, 474 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:08:10,330 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 184 flow [2023-11-06 23:08:10,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-11-06 23:08:10,333 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2023-11-06 23:08:10,333 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 184 flow [2023-11-06 23:08:10,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states 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 23:08:10,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:10,334 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 23:08:10,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:10,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225fe968-1756-41eb-b920-f803ac2d814d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:10,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 23:08:10,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:10,542 INFO L85 PathProgramCache]: Analyzing trace with hash -244459395, now seen corresponding path program 1 times [2023-11-06 23:08:10,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:10,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116716887] [2023-11-06 23:08:10,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:10,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:08:10,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:10,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116716887] [2023-11-06 23:08:10,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116716887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:10,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:10,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:08:10,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046461869] [2023-11-06 23:08:10,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:10,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:10,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:10,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:10,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:10,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 310 [2023-11-06 23:08:10,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 23:08:10,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:10,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 310 [2023-11-06 23:08:10,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:11,434 INFO L124 PetriNetUnfolderBase]: 4374/7597 cut-off events. [2023-11-06 23:08:11,434 INFO L125 PetriNetUnfolderBase]: For 1181/1181 co-relation queries the response was YES. [2023-11-06 23:08:11,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17684 conditions, 7597 events. 4374/7597 cut-off events. For 1181/1181 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 52938 event pairs, 1365 based on Foata normal form. 0/6594 useless extension candidates. Maximal degree in co-relation 13032. Up to 6554 conditions per place. [2023-11-06 23:08:11,497 INFO L140 encePairwiseOnDemand]: 306/310 looper letters, 74 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-11-06 23:08:11,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 422 flow [2023-11-06 23:08:11,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:08:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-11-06 23:08:11,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521505376344086 [2023-11-06 23:08:11,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-11-06 23:08:11,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-11-06 23:08:11,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:11,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-11-06 23:08:11,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 23:08:11,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states 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 23:08:11,508 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states 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 23:08:11,509 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 184 flow. Second operand 3 states and 485 transitions. [2023-11-06 23:08:11,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 422 flow [2023-11-06 23:08:11,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:08:11,515 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 192 flow [2023-11-06 23:08:11,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-11-06 23:08:11,519 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2023-11-06 23:08:11,519 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 192 flow [2023-11-06 23:08:11,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 23:08:11,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:11,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:11,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:08:11,520 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 23:08:11,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:11,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1505600848, now seen corresponding path program 1 times [2023-11-06 23:08:11,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:11,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495915230] [2023-11-06 23:08:11,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:11,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:11,659 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 23:08:11,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:11,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495915230] [2023-11-06 23:08:11,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495915230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:11,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:11,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:08:11,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271467501] [2023-11-06 23:08:11,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:11,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:08:11,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:11,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:08:11,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:08:11,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 310 [2023-11-06 23:08:11,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 23:08:11,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:11,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 310 [2023-11-06 23:08:11,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:12,893 INFO L124 PetriNetUnfolderBase]: 4969/8657 cut-off events. [2023-11-06 23:08:12,895 INFO L125 PetriNetUnfolderBase]: For 3364/3364 co-relation queries the response was YES. [2023-11-06 23:08:12,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20599 conditions, 8657 events. 4969/8657 cut-off events. For 3364/3364 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 61124 event pairs, 722 based on Foata normal form. 91/7813 useless extension candidates. Maximal degree in co-relation 18197. Up to 3731 conditions per place. [2023-11-06 23:08:12,959 INFO L140 encePairwiseOnDemand]: 294/310 looper letters, 165 selfloop transitions, 26 changer transitions 0/198 dead transitions. [2023-11-06 23:08:12,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 198 transitions, 1020 flow [2023-11-06 23:08:12,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:08:12,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:08:12,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1145 transitions. [2023-11-06 23:08:12,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276497695852534 [2023-11-06 23:08:12,971 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1145 transitions. [2023-11-06 23:08:12,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1145 transitions. [2023-11-06 23:08:12,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:12,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1145 transitions. [2023-11-06 23:08:12,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.57142857142858) internal successors, (1145), 7 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states 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 23:08:12,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 23:08:12,989 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 23:08:12,989 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 192 flow. Second operand 7 states and 1145 transitions. [2023-11-06 23:08:12,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 198 transitions, 1020 flow [2023-11-06 23:08:12,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 198 transitions, 1002 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:08:12,998 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 406 flow [2023-11-06 23:08:12,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2023-11-06 23:08:13,001 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2023-11-06 23:08:13,001 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 406 flow [2023-11-06 23:08:13,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 23:08:13,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:13,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:13,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:08:13,003 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 23:08:13,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:13,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1505600924, now seen corresponding path program 1 times [2023-11-06 23:08:13,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:13,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859466052] [2023-11-06 23:08:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:13,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:13,127 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 23:08:13,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:13,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859466052] [2023-11-06 23:08:13,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859466052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:13,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:13,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:08:13,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469840522] [2023-11-06 23:08:13,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:13,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:08:13,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:13,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:08:13,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:08:13,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 310 [2023-11-06 23:08:13,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 406 flow. Second operand has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 23:08:13,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:13,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 310 [2023-11-06 23:08:13,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:14,314 INFO L124 PetriNetUnfolderBase]: 4708/8331 cut-off events. [2023-11-06 23:08:14,314 INFO L125 PetriNetUnfolderBase]: For 9937/9937 co-relation queries the response was YES. [2023-11-06 23:08:14,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24039 conditions, 8331 events. 4708/8331 cut-off events. For 9937/9937 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 59232 event pairs, 662 based on Foata normal form. 253/8009 useless extension candidates. Maximal degree in co-relation 21443. Up to 3826 conditions per place. [2023-11-06 23:08:14,380 INFO L140 encePairwiseOnDemand]: 294/310 looper letters, 168 selfloop transitions, 33 changer transitions 0/208 dead transitions. [2023-11-06 23:08:14,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 208 transitions, 1274 flow [2023-11-06 23:08:14,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:08:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:08:14,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1142 transitions. [2023-11-06 23:08:14,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262672811059907 [2023-11-06 23:08:14,385 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1142 transitions. [2023-11-06 23:08:14,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1142 transitions. [2023-11-06 23:08:14,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:14,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1142 transitions. [2023-11-06 23:08:14,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.14285714285714) internal successors, (1142), 7 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:14,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 23:08:14,396 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 23:08:14,396 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 406 flow. Second operand 7 states and 1142 transitions. [2023-11-06 23:08:14,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 208 transitions, 1274 flow [2023-11-06 23:08:14,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 208 transitions, 1274 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:08:14,438 INFO L231 Difference]: Finished difference. Result has 82 places, 91 transitions, 656 flow [2023-11-06 23:08:14,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=656, PETRI_PLACES=82, PETRI_TRANSITIONS=91} [2023-11-06 23:08:14,439 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2023-11-06 23:08:14,439 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 91 transitions, 656 flow [2023-11-06 23:08:14,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 23:08:14,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:14,440 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 23:08:14,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:08:14,440 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 23:08:14,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:14,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1297763043, now seen corresponding path program 1 times [2023-11-06 23:08:14,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:14,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673623160] [2023-11-06 23:08:14,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:14,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:08:14,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:08:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:08:14,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:08:14,509 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:08:14,509 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-06 23:08:14,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-06 23:08:14,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-06 23:08:14,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-06 23:08:14,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-06 23:08:14,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-06 23:08:14,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-06 23:08:14,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-06 23:08:14,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-06 23:08:14,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-06 23:08:14,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-06 23:08:14,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-06 23:08:14,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-06 23:08:14,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-06 23:08:14,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-06 23:08:14,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-06 23:08:14,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-06 23:08:14,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:08:14,512 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:14,513 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 23:08:14,513 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 23:08:14,556 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 23:08:14,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 206 transitions, 439 flow [2023-11-06 23:08:14,650 INFO L124 PetriNetUnfolderBase]: 54/451 cut-off events. [2023-11-06 23:08:14,650 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 23:08:14,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 451 events. 54/451 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1568 event pairs, 1 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2023-11-06 23:08:14,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 206 transitions, 439 flow [2023-11-06 23:08:14,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 206 transitions, 439 flow [2023-11-06 23:08:14,661 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:08:14,661 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 206 transitions, 439 flow [2023-11-06 23:08:14,661 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 206 transitions, 439 flow [2023-11-06 23:08:14,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 206 transitions, 439 flow [2023-11-06 23:08:14,736 INFO L124 PetriNetUnfolderBase]: 54/451 cut-off events. [2023-11-06 23:08:14,736 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 23:08:14,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 451 events. 54/451 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1568 event pairs, 1 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2023-11-06 23:08:14,767 INFO L119 LiptonReduction]: Number of co-enabled transitions 21384 [2023-11-06 23:08:19,132 INFO L134 LiptonReduction]: Checked pairs total: 52829 [2023-11-06 23:08:19,132 INFO L136 LiptonReduction]: Total number of compositions: 166 [2023-11-06 23:08:19,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:08:19,135 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;@7e5622b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:08:19,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-06 23:08:19,138 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:08:19,138 INFO L124 PetriNetUnfolderBase]: 3/15 cut-off events. [2023-11-06 23:08:19,138 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:08:19,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:19,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:08:19,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 23:08:19,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:19,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1204041144, now seen corresponding path program 1 times [2023-11-06 23:08:19,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:19,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986039175] [2023-11-06 23:08:19,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:19,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:19,171 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 23:08:19,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:19,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986039175] [2023-11-06 23:08:19,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986039175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:19,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:19,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:08:19,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160423022] [2023-11-06 23:08:19,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:19,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:19,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:19,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:19,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:19,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 372 [2023-11-06 23:08:19,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states 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 23:08:19,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:19,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 372 [2023-11-06 23:08:19,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:31,011 INFO L124 PetriNetUnfolderBase]: 99392/142510 cut-off events. [2023-11-06 23:08:31,011 INFO L125 PetriNetUnfolderBase]: For 2441/2441 co-relation queries the response was YES. [2023-11-06 23:08:31,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281988 conditions, 142510 events. 99392/142510 cut-off events. For 2441/2441 co-relation queries the response was YES. Maximal size of possible extension queue 3686. Compared 1064674 event pairs, 64598 based on Foata normal form. 13015/110356 useless extension candidates. Maximal degree in co-relation 24698. Up to 137955 conditions per place. [2023-11-06 23:08:32,104 INFO L140 encePairwiseOnDemand]: 346/372 looper letters, 73 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-06 23:08:32,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 345 flow [2023-11-06 23:08:32,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:32,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:08:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2023-11-06 23:08:32,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2023-11-06 23:08:32,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2023-11-06 23:08:32,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2023-11-06 23:08:32,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:32,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2023-11-06 23:08:32,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 23:08:32,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states 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 23:08:32,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states 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 23:08:32,116 INFO L175 Difference]: Start difference. First operand has 73 places, 90 transitions, 207 flow. Second operand 3 states and 612 transitions. [2023-11-06 23:08:32,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 345 flow [2023-11-06 23:08:32,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 345 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:08:32,121 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 181 flow [2023-11-06 23:08:32,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2023-11-06 23:08:32,123 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2023-11-06 23:08:32,123 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 181 flow [2023-11-06 23:08:32,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states 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 23:08:32,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:32,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:32,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:08:32,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 23:08:32,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:32,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1745575858, now seen corresponding path program 1 times [2023-11-06 23:08:32,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:32,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101309187] [2023-11-06 23:08:32,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:32,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:32,173 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 23:08:32,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:32,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101309187] [2023-11-06 23:08:32,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101309187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:32,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:32,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:08:32,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284809322] [2023-11-06 23:08:32,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:32,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:32,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:32,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:32,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:32,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 372 [2023-11-06 23:08:32,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 23:08:32,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:32,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 372 [2023-11-06 23:08:32,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:47,567 INFO L124 PetriNetUnfolderBase]: 130103/192769 cut-off events. [2023-11-06 23:08:47,568 INFO L125 PetriNetUnfolderBase]: For 9410/9410 co-relation queries the response was YES. [2023-11-06 23:08:47,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394207 conditions, 192769 events. 130103/192769 cut-off events. For 9410/9410 co-relation queries the response was YES. Maximal size of possible extension queue 5204. Compared 1590414 event pairs, 54658 based on Foata normal form. 0/147371 useless extension candidates. Maximal degree in co-relation 394113. Up to 141027 conditions per place. [2023-11-06 23:08:48,505 INFO L140 encePairwiseOnDemand]: 352/372 looper letters, 102 selfloop transitions, 8 changer transitions 0/118 dead transitions. [2023-11-06 23:08:48,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 118 transitions, 529 flow [2023-11-06 23:08:48,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:48,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:08:48,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-11-06 23:08:48,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2023-11-06 23:08:48,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-11-06 23:08:48,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-11-06 23:08:48,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:48,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-11-06 23:08:48,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 23:08:48,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states 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 23:08:48,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states 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 23:08:48,517 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 181 flow. Second operand 3 states and 624 transitions. [2023-11-06 23:08:48,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 118 transitions, 529 flow [2023-11-06 23:08:48,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 118 transitions, 526 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:08:48,543 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 263 flow [2023-11-06 23:08:48,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2023-11-06 23:08:48,544 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2023-11-06 23:08:48,544 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 263 flow [2023-11-06 23:08:48,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 23:08:48,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:48,545 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 23:08:48,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:08:48,545 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 23:08:48,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1076917093, now seen corresponding path program 1 times [2023-11-06 23:08:48,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:48,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478671449] [2023-11-06 23:08:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:48,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:08:48,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:48,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478671449] [2023-11-06 23:08:48,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478671449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:48,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:48,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:08:48,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259869837] [2023-11-06 23:08:48,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:48,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:48,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:48,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:48,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:48,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 372 [2023-11-06 23:08:48,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states 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 23:08:48,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:48,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 372 [2023-11-06 23:08:48,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand