./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:08:36,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:08:36,980 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:08:36,985 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:08:36,986 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:08:37,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:08:37,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:08:37,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:08:37,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:08:37,015 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:08:37,016 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:08:37,017 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:08:37,018 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:08:37,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:08:37,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:08:37,020 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:08:37,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:08:37,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:08:37,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:08:37,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:08:37,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:08:37,024 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:08:37,024 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:08:37,025 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:08:37,026 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:08:37,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:08:37,027 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:08:37,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:08:37,028 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:08:37,029 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:08:37,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:37,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:08:37,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:08:37,031 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:08:37,031 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:08:37,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:08:37,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:08:37,033 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:08:37,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:08:37,034 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:08:37,034 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:08:37,035 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_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2023-11-12 02:08:37,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:08:37,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:08:37,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:08:37,391 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:08:37,392 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:08:37,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2023-11-12 02:08:40,697 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:08:41,083 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:08:41,085 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2023-11-12 02:08:41,112 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/data/d1f789605/721f9235c266446fa572a57fc1538bdb/FLAG4d22f70f5 [2023-11-12 02:08:41,133 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/data/d1f789605/721f9235c266446fa572a57fc1538bdb [2023-11-12 02:08:41,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:08:41,145 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:08:41,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:41,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:08:41,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:08:41,156 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:41" (1/1) ... [2023-11-12 02:08:41,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f27124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:41, skipping insertion in model container [2023-11-12 02:08:41,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:41" (1/1) ... [2023-11-12 02:08:41,236 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:08:41,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:41,845 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:08:41,904 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:41,977 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:08:41,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:41 WrapperNode [2023-11-12 02:08:41,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:41,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:41,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:08:41,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:08:41,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:41" (1/1) ... [2023-11-12 02:08:42,010 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:41" (1/1) ... [2023-11-12 02:08:42,061 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 280 [2023-11-12 02:08:42,061 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:42,062 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:08:42,063 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:08:42,069 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:08:42,077 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:41" (1/1) ... [2023-11-12 02:08:42,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:41" (1/1) ... [2023-11-12 02:08:42,084 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:41" (1/1) ... [2023-11-12 02:08:42,084 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:41" (1/1) ... [2023-11-12 02:08:42,106 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:41" (1/1) ... [2023-11-12 02:08:42,117 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:41" (1/1) ... [2023-11-12 02:08:42,120 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:41" (1/1) ... [2023-11-12 02:08:42,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:41" (1/1) ... [2023-11-12 02:08:42,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:08:42,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:08:42,130 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:08:42,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:08:42,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:41" (1/1) ... [2023-11-12 02:08:42,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:42,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:42,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:08:42,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:08:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:08:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:08:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:08:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:08:42,197 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:08:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:08:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 02:08:42,198 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 02:08:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:08:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:08:42,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:08:42,200 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:08:42,378 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:08:42,381 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:08:42,848 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:08:42,859 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:08:42,859 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-11-12 02:08:42,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:42 BoogieIcfgContainer [2023-11-12 02:08:42,862 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:08:42,864 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:08:42,864 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:08:42,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:08:42,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:08:41" (1/3) ... [2023-11-12 02:08:42,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df9bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:42, skipping insertion in model container [2023-11-12 02:08:42,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:41" (2/3) ... [2023-11-12 02:08:42,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df9bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:42, skipping insertion in model container [2023-11-12 02:08:42,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:42" (3/3) ... [2023-11-12 02:08:42,872 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2023-11-12 02:08:42,881 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:08:42,893 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:08:42,894 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-12 02:08:42,894 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:08:43,005 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:08:43,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 310 transitions, 627 flow [2023-11-12 02:08:43,222 INFO L124 PetriNetUnfolderBase]: 78/478 cut-off events. [2023-11-12 02:08:43,223 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:08:43,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 478 events. 78/478 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2366 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 265. Up to 8 conditions per place. [2023-11-12 02:08:43,242 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 310 transitions, 627 flow [2023-11-12 02:08:43,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 263 places, 307 transitions, 621 flow [2023-11-12 02:08:43,268 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:08:43,289 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 263 places, 307 transitions, 621 flow [2023-11-12 02:08:43,294 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 263 places, 307 transitions, 621 flow [2023-11-12 02:08:43,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 307 transitions, 621 flow [2023-11-12 02:08:43,418 INFO L124 PetriNetUnfolderBase]: 77/475 cut-off events. [2023-11-12 02:08:43,419 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:08:43,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 475 events. 77/475 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2347 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 265. Up to 8 conditions per place. [2023-11-12 02:08:43,469 INFO L119 LiptonReduction]: Number of co-enabled transitions 31328 [2023-11-12 02:08:48,886 INFO L134 LiptonReduction]: Checked pairs total: 50999 [2023-11-12 02:08:48,887 INFO L136 LiptonReduction]: Total number of compositions: 284 [2023-11-12 02:08:48,903 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:08:48,910 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5617c0f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:08:48,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-12 02:08:48,913 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:08:48,913 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:08:48,913 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:08:48,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:48,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:08:48,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 02:08:48,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:48,920 INFO L85 PathProgramCache]: Analyzing trace with hash 38762, now seen corresponding path program 1 times [2023-11-12 02:08:48,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:48,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406833968] [2023-11-12 02:08:48,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:48,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:49,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:49,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406833968] [2023-11-12 02:08:49,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406833968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:49,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:49,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:08:49,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348191809] [2023-11-12 02:08:49,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:49,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:49,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:49,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:49,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:49,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 594 [2023-11-12 02:08:49,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 121 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:49,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:49,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 594 [2023-11-12 02:08:49,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:49,965 INFO L124 PetriNetUnfolderBase]: 1101/2267 cut-off events. [2023-11-12 02:08:49,965 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:08:49,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4347 conditions, 2267 events. 1101/2267 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14880 event pairs, 945 based on Foata normal form. 271/1811 useless extension candidates. Maximal degree in co-relation 4233. Up to 2073 conditions per place. [2023-11-12 02:08:49,983 INFO L140 encePairwiseOnDemand]: 557/594 looper letters, 73 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-11-12 02:08:49,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 86 transitions, 329 flow [2023-11-12 02:08:49,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 884 transitions. [2023-11-12 02:08:50,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49607182940516276 [2023-11-12 02:08:50,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 884 transitions. [2023-11-12 02:08:50,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 884 transitions. [2023-11-12 02:08:50,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:50,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 884 transitions. [2023-11-12 02:08:50,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:50,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:50,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:50,040 INFO L175 Difference]: Start difference. First operand has 85 places, 121 transitions, 249 flow. Second operand 3 states and 884 transitions. [2023-11-12 02:08:50,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 86 transitions, 329 flow [2023-11-12 02:08:50,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 86 transitions, 329 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:08:50,050 INFO L231 Difference]: Finished difference. Result has 85 places, 86 transitions, 183 flow [2023-11-12 02:08:50,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=85, PETRI_TRANSITIONS=86} [2023-11-12 02:08:50,057 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 0 predicate places. [2023-11-12 02:08:50,058 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 86 transitions, 183 flow [2023-11-12 02:08:50,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:50,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:50,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:08:50,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:08:50,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 02:08:50,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:50,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1157309410, now seen corresponding path program 1 times [2023-11-12 02:08:50,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:50,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86738584] [2023-11-12 02:08:50,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:50,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:50,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:50,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86738584] [2023-11-12 02:08:50,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86738584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:50,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:50,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:08:50,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607418817] [2023-11-12 02:08:50,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:50,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:50,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:50,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:50,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:50,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 594 [2023-11-12 02:08:50,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 86 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:50,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:50,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 594 [2023-11-12 02:08:50,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:50,620 INFO L124 PetriNetUnfolderBase]: 1101/2268 cut-off events. [2023-11-12 02:08:50,621 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:08:50,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4352 conditions, 2268 events. 1101/2268 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14891 event pairs, 945 based on Foata normal form. 1/1543 useless extension candidates. Maximal degree in co-relation 4338. Up to 2075 conditions per place. [2023-11-12 02:08:50,639 INFO L140 encePairwiseOnDemand]: 591/594 looper letters, 74 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-11-12 02:08:50,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 87 transitions, 337 flow [2023-11-12 02:08:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:50,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:50,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 851 transitions. [2023-11-12 02:08:50,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775533108866442 [2023-11-12 02:08:50,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 851 transitions. [2023-11-12 02:08:50,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 851 transitions. [2023-11-12 02:08:50,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:50,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 851 transitions. [2023-11-12 02:08:50,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:50,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:50,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:50,659 INFO L175 Difference]: Start difference. First operand has 85 places, 86 transitions, 183 flow. Second operand 3 states and 851 transitions. [2023-11-12 02:08:50,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 87 transitions, 337 flow [2023-11-12 02:08:50,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 87 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:08:50,668 INFO L231 Difference]: Finished difference. Result has 86 places, 87 transitions, 191 flow [2023-11-12 02:08:50,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=86, PETRI_TRANSITIONS=87} [2023-11-12 02:08:50,670 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 1 predicate places. [2023-11-12 02:08:50,671 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 87 transitions, 191 flow [2023-11-12 02:08:50,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:50,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:50,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:08:50,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:08:50,674 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 02:08:50,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:50,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1542278104, now seen corresponding path program 1 times [2023-11-12 02:08:50,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:50,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739085845] [2023-11-12 02:08:50,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:50,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:50,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:50,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739085845] [2023-11-12 02:08:50,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739085845] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:08:50,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340766288] [2023-11-12 02:08:50,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:50,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:50,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:50,784 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:50,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:08:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:50,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:08:50,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:50,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:50,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340766288] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:50,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:08:50,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-12 02:08:50,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830150746] [2023-11-12 02:08:50,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:50,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:08:50,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:50,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:08:50,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:08:51,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 594 [2023-11-12 02:08:51,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 87 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:51,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:51,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 594 [2023-11-12 02:08:51,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:51,375 INFO L124 PetriNetUnfolderBase]: 1101/2271 cut-off events. [2023-11-12 02:08:51,376 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:08:51,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4365 conditions, 2271 events. 1101/2271 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14872 event pairs, 945 based on Foata normal form. 0/1544 useless extension candidates. Maximal degree in co-relation 4353. Up to 2075 conditions per place. [2023-11-12 02:08:51,391 INFO L140 encePairwiseOnDemand]: 591/594 looper letters, 74 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2023-11-12 02:08:51,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 361 flow [2023-11-12 02:08:51,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:08:51,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:08:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1624 transitions. [2023-11-12 02:08:51,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4556677890011223 [2023-11-12 02:08:51,398 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1624 transitions. [2023-11-12 02:08:51,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1624 transitions. [2023-11-12 02:08:51,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:51,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1624 transitions. [2023-11-12 02:08:51,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.6666666666667) internal successors, (1624), 6 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:51,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 594.0) internal successors, (4158), 7 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:51,417 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 594.0) internal successors, (4158), 7 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:51,417 INFO L175 Difference]: Start difference. First operand has 86 places, 87 transitions, 191 flow. Second operand 6 states and 1624 transitions. [2023-11-12 02:08:51,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 361 flow [2023-11-12 02:08:51,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 90 transitions, 357 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:08:51,421 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 223 flow [2023-11-12 02:08:51,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2023-11-12 02:08:51,423 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 8 predicate places. [2023-11-12 02:08:51,423 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 223 flow [2023-11-12 02:08:51,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:51,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:51,425 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-12 02:08:51,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:51,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:51,631 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 02:08:51,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:51,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2076151483, now seen corresponding path program 1 times [2023-11-12 02:08:51,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:51,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736841324] [2023-11-12 02:08:51,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:51,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:51,727 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:08:51,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:51,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736841324] [2023-11-12 02:08:51,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736841324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:51,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:51,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:08:51,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594149093] [2023-11-12 02:08:51,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:51,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:51,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:51,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:51,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:51,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 594 [2023-11-12 02:08:51,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:51,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:51,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 594 [2023-11-12 02:08:51,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:52,101 INFO L124 PetriNetUnfolderBase]: 1056/2137 cut-off events. [2023-11-12 02:08:52,102 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:08:52,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4114 conditions, 2137 events. 1056/2137 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14273 event pairs, 84 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 4080. Up to 1924 conditions per place. [2023-11-12 02:08:52,118 INFO L140 encePairwiseOnDemand]: 589/594 looper letters, 98 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-11-12 02:08:52,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 111 transitions, 465 flow [2023-11-12 02:08:52,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:52,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:52,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2023-11-12 02:08:52,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4898989898989899 [2023-11-12 02:08:52,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2023-11-12 02:08:52,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2023-11-12 02:08:52,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:52,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2023-11-12 02:08:52,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:52,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:52,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:52,134 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 223 flow. Second operand 3 states and 873 transitions. [2023-11-12 02:08:52,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 111 transitions, 465 flow [2023-11-12 02:08:52,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 111 transitions, 451 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-12 02:08:52,139 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 213 flow [2023-11-12 02:08:52,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2023-11-12 02:08:52,141 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 8 predicate places. [2023-11-12 02:08:52,141 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 213 flow [2023-11-12 02:08:52,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:52,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:52,142 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-12 02:08:52,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:08:52,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 02:08:52,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:52,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1978307407, now seen corresponding path program 1 times [2023-11-12 02:08:52,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:52,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752314270] [2023-11-12 02:08:52,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:52,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:08:52,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:52,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752314270] [2023-11-12 02:08:52,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752314270] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:08:52,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655711165] [2023-11-12 02:08:52,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:52,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:52,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:52,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:52,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:08:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:52,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:08:52,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:08:52,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:08:52,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655711165] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:52,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:08:52,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-12 02:08:52,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560963005] [2023-11-12 02:08:52,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:52,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:08:52,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:52,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:08:52,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:08:52,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 594 [2023-11-12 02:08:52,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 213 flow. Second operand has 12 states, 12 states have (on average 258.25) internal successors, (3099), 12 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:52,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:52,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 594 [2023-11-12 02:08:52,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:52,981 INFO L124 PetriNetUnfolderBase]: 1056/2133 cut-off events. [2023-11-12 02:08:52,981 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-12 02:08:52,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4190 conditions, 2133 events. 1056/2133 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 13722 event pairs, 903 based on Foata normal form. 6/1510 useless extension candidates. Maximal degree in co-relation 4137. Up to 1945 conditions per place. [2023-11-12 02:08:52,997 INFO L140 encePairwiseOnDemand]: 591/594 looper letters, 72 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2023-11-12 02:08:52,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 94 transitions, 415 flow [2023-11-12 02:08:52,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:08:52,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:08:53,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3173 transitions. [2023-11-12 02:08:53,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451459034792368 [2023-11-12 02:08:53,009 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3173 transitions. [2023-11-12 02:08:53,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3173 transitions. [2023-11-12 02:08:53,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:53,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3173 transitions. [2023-11-12 02:08:53,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 264.4166666666667) internal successors, (3173), 12 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:53,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 594.0) internal successors, (7722), 13 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:53,041 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 594.0) internal successors, (7722), 13 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:53,042 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 213 flow. Second operand 12 states and 3173 transitions. [2023-11-12 02:08:53,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 94 transitions, 415 flow [2023-11-12 02:08:53,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 94 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:08:53,051 INFO L231 Difference]: Finished difference. Result has 108 places, 94 transitions, 293 flow [2023-11-12 02:08:53,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=293, PETRI_PLACES=108, PETRI_TRANSITIONS=94} [2023-11-12 02:08:53,054 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 23 predicate places. [2023-11-12 02:08:53,054 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 94 transitions, 293 flow [2023-11-12 02:08:53,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 258.25) internal successors, (3099), 12 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:53,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:53,056 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-12 02:08:53,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:53,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:53,263 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-12 02:08:53,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:53,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1903865969, now seen corresponding path program 2 times [2023-11-12 02:08:53,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:53,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865152998] [2023-11-12 02:08:53,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:53,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:08:53,318 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:08:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:08:53,367 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:08:53,367 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:08:53,369 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-11-12 02:08:53,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-11-12 02:08:53,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-11-12 02:08:53,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-11-12 02:08:53,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-11-12 02:08:53,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-11-12 02:08:53,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-11-12 02:08:53,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-11-12 02:08:53,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-11-12 02:08:53,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-11-12 02:08:53,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-11-12 02:08:53,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-11-12 02:08:53,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-11-12 02:08:53,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-11-12 02:08:53,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-11-12 02:08:53,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-11-12 02:08:53,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-11-12 02:08:53,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-11-12 02:08:53,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-11-12 02:08:53,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-11-12 02:08:53,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-11-12 02:08:53,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-11-12 02:08:53,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-11-12 02:08:53,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-11-12 02:08:53,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-11-12 02:08:53,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-11-12 02:08:53,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-11-12 02:08:53,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-11-12 02:08:53,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-11-12 02:08:53,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:08:53,384 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-11-12 02:08:53,387 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:08:53,387 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:08:53,451 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:08:53,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 400 transitions, 816 flow [2023-11-12 02:08:53,598 INFO L124 PetriNetUnfolderBase]: 126/774 cut-off events. [2023-11-12 02:08:53,598 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:08:53,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 774 events. 126/774 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4343 event pairs, 0 based on Foata normal form. 0/590 useless extension candidates. Maximal degree in co-relation 480. Up to 12 conditions per place. [2023-11-12 02:08:53,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 341 places, 400 transitions, 816 flow [2023-11-12 02:08:53,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 341 places, 400 transitions, 816 flow [2023-11-12 02:08:53,628 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:08:53,629 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 341 places, 400 transitions, 816 flow [2023-11-12 02:08:53,629 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 341 places, 400 transitions, 816 flow [2023-11-12 02:08:53,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 400 transitions, 816 flow [2023-11-12 02:08:53,797 INFO L124 PetriNetUnfolderBase]: 126/774 cut-off events. [2023-11-12 02:08:53,797 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:08:53,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 774 events. 126/774 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4343 event pairs, 0 based on Foata normal form. 0/590 useless extension candidates. Maximal degree in co-relation 480. Up to 12 conditions per place. [2023-11-12 02:08:53,862 INFO L119 LiptonReduction]: Number of co-enabled transitions 81488 [2023-11-12 02:08:59,570 INFO L134 LiptonReduction]: Checked pairs total: 131875 [2023-11-12 02:08:59,571 INFO L136 LiptonReduction]: Total number of compositions: 348 [2023-11-12 02:08:59,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:08:59,595 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5617c0f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:08:59,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-12 02:08:59,598 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:08:59,598 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:08:59,599 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:08:59,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:59,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:08:59,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-12 02:08:59,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:59,612 INFO L85 PathProgramCache]: Analyzing trace with hash 65431, now seen corresponding path program 1 times [2023-11-12 02:08:59,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:59,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067604105] [2023-11-12 02:08:59,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:59,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:59,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:59,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067604105] [2023-11-12 02:08:59,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067604105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:59,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:59,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:08:59,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531538548] [2023-11-12 02:08:59,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:59,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:59,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:59,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:59,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:59,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 748 [2023-11-12 02:08:59,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 163 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:59,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:59,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 748 [2023-11-12 02:08:59,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:07,785 INFO L124 PetriNetUnfolderBase]: 54433/82334 cut-off events. [2023-11-12 02:09:07,785 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2023-11-12 02:09:07,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161367 conditions, 82334 events. 54433/82334 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 2518. Compared 633095 event pairs, 49330 based on Foata normal form. 9005/63388 useless extension candidates. Maximal degree in co-relation 76010. Up to 78906 conditions per place. [2023-11-12 02:09:08,368 INFO L140 encePairwiseOnDemand]: 699/748 looper letters, 103 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2023-11-12 02:09:08,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 119 transitions, 464 flow [2023-11-12 02:09:08,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:08,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:09:08,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1149 transitions. [2023-11-12 02:09:08,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120320855614974 [2023-11-12 02:09:08,375 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1149 transitions. [2023-11-12 02:09:08,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1149 transitions. [2023-11-12 02:09:08,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:08,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1149 transitions. [2023-11-12 02:09:08,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 383.0) internal successors, (1149), 3 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:08,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 748.0) internal successors, (2992), 4 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:08,390 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 748.0) internal successors, (2992), 4 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:08,390 INFO L175 Difference]: Start difference. First operand has 114 places, 163 transitions, 342 flow. Second operand 3 states and 1149 transitions. [2023-11-12 02:09:08,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 119 transitions, 464 flow [2023-11-12 02:09:08,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 119 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:09:08,396 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 266 flow [2023-11-12 02:09:08,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=748, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2023-11-12 02:09:08,398 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-11-12 02:09:08,399 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 266 flow [2023-11-12 02:09:08,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:08,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:08,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:09:08,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:09:08,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-12 02:09:08,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:08,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2032288, now seen corresponding path program 1 times [2023-11-12 02:09:08,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:08,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517436848] [2023-11-12 02:09:08,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:08,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:08,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:08,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517436848] [2023-11-12 02:09:08,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517436848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:08,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:08,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:09:08,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951504895] [2023-11-12 02:09:08,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:08,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:08,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:08,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:08,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:08,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 748 [2023-11-12 02:09:08,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:08,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:08,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 748 [2023-11-12 02:09:08,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:15,111 INFO L124 PetriNetUnfolderBase]: 54433/82333 cut-off events. [2023-11-12 02:09:15,111 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2023-11-12 02:09:15,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161372 conditions, 82333 events. 54433/82333 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 2518. Compared 633230 event pairs, 49330 based on Foata normal form. 0/54383 useless extension candidates. Maximal degree in co-relation 161359. Up to 78903 conditions per place. [2023-11-12 02:09:15,807 INFO L140 encePairwiseOnDemand]: 745/748 looper letters, 102 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-11-12 02:09:15,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 118 transitions, 470 flow [2023-11-12 02:09:15,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:09:15,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1100 transitions. [2023-11-12 02:09:15,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2023-11-12 02:09:15,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1100 transitions. [2023-11-12 02:09:15,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1100 transitions. [2023-11-12 02:09:15,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:15,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1100 transitions. [2023-11-12 02:09:15,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 366.6666666666667) internal successors, (1100), 3 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:15,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 748.0) internal successors, (2992), 4 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:15,831 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 748.0) internal successors, (2992), 4 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:15,831 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 266 flow. Second operand 3 states and 1100 transitions. [2023-11-12 02:09:15,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 118 transitions, 470 flow [2023-11-12 02:09:15,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 118 transitions, 466 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:09:15,836 INFO L231 Difference]: Finished difference. Result has 116 places, 118 transitions, 262 flow [2023-11-12 02:09:15,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=748, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=116, PETRI_TRANSITIONS=118} [2023-11-12 02:09:15,837 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-11-12 02:09:15,838 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 262 flow [2023-11-12 02:09:15,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:15,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:15,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:15,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:09:15,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-12 02:09:15,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:15,841 INFO L85 PathProgramCache]: Analyzing trace with hash 48128457, now seen corresponding path program 1 times [2023-11-12 02:09:15,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:15,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759219264] [2023-11-12 02:09:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:15,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:15,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:15,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759219264] [2023-11-12 02:09:15,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759219264] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:09:15,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803117580] [2023-11-12 02:09:15,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:15,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:15,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:15,892 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:15,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:09:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:15,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:09:15,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:16,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:09:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:16,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803117580] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:09:16,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:09:16,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-12 02:09:16,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998837671] [2023-11-12 02:09:16,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:09:16,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:09:16,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:16,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:09:16,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:09:16,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 748 [2023-11-12 02:09:16,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 118 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 332.57142857142856) internal successors, (2328), 7 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:16,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:16,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 748 [2023-11-12 02:09:16,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:22,315 INFO L124 PetriNetUnfolderBase]: 54433/82336 cut-off events. [2023-11-12 02:09:22,316 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2023-11-12 02:09:22,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161381 conditions, 82336 events. 54433/82336 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 2515. Compared 633094 event pairs, 49330 based on Foata normal form. 3/54390 useless extension candidates. Maximal degree in co-relation 161353. Up to 78905 conditions per place. [2023-11-12 02:09:22,646 INFO L140 encePairwiseOnDemand]: 745/748 looper letters, 102 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-11-12 02:09:22,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 121 transitions, 488 flow [2023-11-12 02:09:22,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:09:22,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:09:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2096 transitions. [2023-11-12 02:09:22,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46702317290552586 [2023-11-12 02:09:22,654 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2096 transitions. [2023-11-12 02:09:22,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2096 transitions. [2023-11-12 02:09:22,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:22,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2096 transitions. [2023-11-12 02:09:22,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 349.3333333333333) internal successors, (2096), 6 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:22,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 748.0) internal successors, (5236), 7 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:22,674 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 748.0) internal successors, (5236), 7 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:22,674 INFO L175 Difference]: Start difference. First operand has 116 places, 118 transitions, 262 flow. Second operand 6 states and 2096 transitions. [2023-11-12 02:09:22,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 121 transitions, 488 flow [2023-11-12 02:09:22,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 121 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:09:22,679 INFO L231 Difference]: Finished difference. Result has 122 places, 121 transitions, 294 flow [2023-11-12 02:09:22,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=748, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=122, PETRI_TRANSITIONS=121} [2023-11-12 02:09:22,680 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 8 predicate places. [2023-11-12 02:09:22,680 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 121 transitions, 294 flow [2023-11-12 02:09:22,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 332.57142857142856) internal successors, (2328), 7 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:22,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:22,681 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:22,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:22,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5083f5b-3d96-49cd-85f9-19861f980be7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:22,887 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-12 02:09:22,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:22,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1604262528, now seen corresponding path program 2 times [2023-11-12 02:09:22,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:22,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622885168] [2023-11-12 02:09:22,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:22,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:09:22,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:22,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622885168] [2023-11-12 02:09:22,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622885168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:22,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:22,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:09:22,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048935207] [2023-11-12 02:09:22,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:22,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:22,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:22,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:22,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:22,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 748 [2023-11-12 02:09:22,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 121 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 334.0) internal successors, (1002), 3 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:22,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:22,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 748 [2023-11-12 02:09:22,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand