./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:10:07,933 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:10:08,013 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:10:08,021 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:10:08,021 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:10:08,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:10:08,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:10:08,053 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:10:08,054 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:10:08,055 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:10:08,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:10:08,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:10:08,058 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:10:08,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:10:08,059 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:10:08,060 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:10:08,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:10:08,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:10:08,062 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:10:08,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:10:08,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:10:08,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:10:08,064 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:10:08,065 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:10:08,065 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:10:08,066 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:10:08,066 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:10:08,067 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:10:08,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:10:08,068 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:10:08,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:10:08,069 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:10:08,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:10:08,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:10:08,071 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:10:08,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:10:08,072 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:10:08,072 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:10:08,073 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:10:08,073 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:10:08,074 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:10:08,075 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_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2023-11-06 22:10:08,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:10:08,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:10:08,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:10:08,380 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:10:08,380 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:10:08,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-11-06 22:10:11,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:10:11,804 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:10:11,804 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-11-06 22:10:11,840 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/data/d46ca4cd0/7e03948f70cd4ece9152384bfbbff292/FLAGeaec76965 [2023-11-06 22:10:11,859 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/data/d46ca4cd0/7e03948f70cd4ece9152384bfbbff292 [2023-11-06 22:10:11,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:10:11,872 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:10:11,874 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:10:11,874 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:10:11,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:10:11,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:10:11" (1/1) ... [2023-11-06 22:10:11,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d5e64b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:11, skipping insertion in model container [2023-11-06 22:10:11,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:10:11" (1/1) ... [2023-11-06 22:10:11,955 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:10:12,554 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:10:12,555 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:10:12,556 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:10:12,557 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:10:12,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:10:12,620 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:10:12,664 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:10:12,665 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:10:12,666 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:10:12,666 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:10:12,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:10:12,771 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:10:12,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:12 WrapperNode [2023-11-06 22:10:12,771 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:10:12,773 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:10:12,773 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:10:12,773 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:10:12,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:12" (1/1) ... [2023-11-06 22:10:12,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:12" (1/1) ... [2023-11-06 22:10:12,862 INFO L138 Inliner]: procedures = 279, calls = 52, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 250 [2023-11-06 22:10:12,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:10:12,864 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:10:12,864 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:10:12,865 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:10:12,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:12" (1/1) ... [2023-11-06 22:10:12,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:12" (1/1) ... [2023-11-06 22:10:12,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:12" (1/1) ... [2023-11-06 22:10:12,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:12" (1/1) ... [2023-11-06 22:10:12,904 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:12" (1/1) ... [2023-11-06 22:10:12,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:12" (1/1) ... [2023-11-06 22:10:12,916 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:12" (1/1) ... [2023-11-06 22:10:12,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:12" (1/1) ... [2023-11-06 22:10:12,925 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:10:12,926 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:10:12,926 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:10:12,926 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:10:12,927 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:12" (1/1) ... [2023-11-06 22:10:12,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:10:12,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:12,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:10:13,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:10:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:10:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:10:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:10:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:10:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:10:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:10:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:10:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:10:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:10:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:10:13,036 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:10:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:10:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:10:13,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:10:13,038 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:10:13,296 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:10:13,298 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:10:13,768 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:10:13,780 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:10:13,780 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-06 22:10:13,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:13 BoogieIcfgContainer [2023-11-06 22:10:13,783 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:10:13,786 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:10:13,786 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:10:13,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:10:13,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:10:11" (1/3) ... [2023-11-06 22:10:13,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5606f71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:10:13, skipping insertion in model container [2023-11-06 22:10:13,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:12" (2/3) ... [2023-11-06 22:10:13,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5606f71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:10:13, skipping insertion in model container [2023-11-06 22:10:13,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:13" (3/3) ... [2023-11-06 22:10:13,794 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2023-11-06 22:10:13,805 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:10:13,817 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:10:13,817 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-06 22:10:13,817 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:10:13,962 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:10:14,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 297 transitions, 601 flow [2023-11-06 22:10:14,245 INFO L124 PetriNetUnfolderBase]: 30/316 cut-off events. [2023-11-06 22:10:14,246 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:10:14,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 316 events. 30/316 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 797 event pairs, 0 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 170. Up to 4 conditions per place. [2023-11-06 22:10:14,256 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 297 transitions, 601 flow [2023-11-06 22:10:14,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 270 places, 294 transitions, 595 flow [2023-11-06 22:10:14,276 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:10:14,301 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 270 places, 294 transitions, 595 flow [2023-11-06 22:10:14,304 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 270 places, 294 transitions, 595 flow [2023-11-06 22:10:14,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 294 transitions, 595 flow [2023-11-06 22:10:14,395 INFO L124 PetriNetUnfolderBase]: 29/313 cut-off events. [2023-11-06 22:10:14,395 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:10:14,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 313 events. 29/313 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 781 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 170. Up to 4 conditions per place. [2023-11-06 22:10:14,404 INFO L119 LiptonReduction]: Number of co-enabled transitions 6206 [2023-11-06 22:10:39,827 WARN L293 SmtUtils]: Spent 11.90s on a formula simplification. DAG size of input: 167 DAG size of output: 165 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:10:55,514 WARN L293 SmtUtils]: Spent 13.88s on a formula simplification. DAG size of input: 167 DAG size of output: 165 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:11:17,680 WARN L293 SmtUtils]: Spent 19.10s on a formula simplification. DAG size of input: 168 DAG size of output: 167 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:11:37,940 WARN L293 SmtUtils]: Spent 17.90s on a formula simplification. DAG size of input: 168 DAG size of output: 167 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:11:41,521 INFO L134 LiptonReduction]: Checked pairs total: 6202 [2023-11-06 22:11:41,521 INFO L136 LiptonReduction]: Total number of compositions: 320 [2023-11-06 22:11:41,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:11:41,542 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2180062d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:11:41,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-06 22:11:41,546 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:11:41,546 INFO L124 PetriNetUnfolderBase]: 2/5 cut-off events. [2023-11-06 22:11:41,546 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:11:41,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:41,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:11:41,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:11:41,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:41,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1148083, now seen corresponding path program 1 times [2023-11-06 22:11:41,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:41,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401810263] [2023-11-06 22:11:41,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:41,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:41,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:11:41,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880214104] [2023-11-06 22:11:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:41,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:41,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:41,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:41,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:11:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:41,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:11:41,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:41,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:41,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:41,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401810263] [2023-11-06 22:11:41,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:11:41,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880214104] [2023-11-06 22:11:41,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880214104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:41,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:41,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:11:41,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950545828] [2023-11-06 22:11:41,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:41,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:41,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:41,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:41,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:41,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 617 [2023-11-06 22:11:41,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 52 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:41,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:41,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 617 [2023-11-06 22:11:41,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:42,448 INFO L124 PetriNetUnfolderBase]: 102/233 cut-off events. [2023-11-06 22:11:42,448 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:11:42,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 233 events. 102/233 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 862 event pairs, 80 based on Foata normal form. 12/135 useless extension candidates. Maximal degree in co-relation 404. Up to 209 conditions per place. [2023-11-06 22:11:42,453 INFO L140 encePairwiseOnDemand]: 598/617 looper letters, 38 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-11-06 22:11:42,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 179 flow [2023-11-06 22:11:42,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 853 transitions. [2023-11-06 22:11:42,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46083198271204756 [2023-11-06 22:11:42,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 853 transitions. [2023-11-06 22:11:42,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 853 transitions. [2023-11-06 22:11:42,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:42,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 853 transitions. [2023-11-06 22:11:42,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:42,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:42,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:42,505 INFO L175 Difference]: Start difference. First operand has 41 places, 52 transitions, 111 flow. Second operand 3 states and 853 transitions. [2023-11-06 22:11:42,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 179 flow [2023-11-06 22:11:42,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 179 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:11:42,511 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 119 flow [2023-11-06 22:11:42,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-11-06 22:11:42,517 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-11-06 22:11:42,517 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 119 flow [2023-11-06 22:11:42,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:42,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:42,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:11:42,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:11:42,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:11:42,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:11:42,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:42,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1148358, now seen corresponding path program 1 times [2023-11-06 22:11:42,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:42,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912680634] [2023-11-06 22:11:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:42,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:42,803 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:11:42,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406278318] [2023-11-06 22:11:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:42,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:42,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:42,806 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:42,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:11:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:42,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:11:42,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:42,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:42,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:42,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912680634] [2023-11-06 22:11:42,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:11:42,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406278318] [2023-11-06 22:11:42,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406278318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:42,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:42,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:11:42,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457220000] [2023-11-06 22:11:42,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:42,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:42,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:42,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:42,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:43,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 617 [2023-11-06 22:11:43,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:43,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:43,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 617 [2023-11-06 22:11:43,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:43,245 INFO L124 PetriNetUnfolderBase]: 101/231 cut-off events. [2023-11-06 22:11:43,245 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:11:43,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 231 events. 101/231 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 856 event pairs, 80 based on Foata normal form. 2/128 useless extension candidates. Maximal degree in co-relation 443. Up to 206 conditions per place. [2023-11-06 22:11:43,248 INFO L140 encePairwiseOnDemand]: 612/617 looper letters, 32 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2023-11-06 22:11:43,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 183 flow [2023-11-06 22:11:43,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:43,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:43,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 838 transitions. [2023-11-06 22:11:43,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45272825499729874 [2023-11-06 22:11:43,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 838 transitions. [2023-11-06 22:11:43,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 838 transitions. [2023-11-06 22:11:43,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:43,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 838 transitions. [2023-11-06 22:11:43,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:43,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:43,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:43,267 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 119 flow. Second operand 3 states and 838 transitions. [2023-11-06 22:11:43,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 183 flow [2023-11-06 22:11:43,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 179 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:43,270 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 115 flow [2023-11-06 22:11:43,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-11-06 22:11:43,271 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-11-06 22:11:43,271 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 115 flow [2023-11-06 22:11:43,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:43,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:43,273 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-06 22:11:43,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:43,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:43,480 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:11:43,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:43,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1103565192, now seen corresponding path program 1 times [2023-11-06 22:11:43,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:43,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881253962] [2023-11-06 22:11:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:43,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:43,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:43,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:43,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881253962] [2023-11-06 22:11:43,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881253962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:43,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:43,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:11:43,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697731679] [2023-11-06 22:11:43,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:43,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:43,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:43,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:43,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:43,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 617 [2023-11-06 22:11:43,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:43,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:43,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 617 [2023-11-06 22:11:43,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:43,939 INFO L124 PetriNetUnfolderBase]: 101/233 cut-off events. [2023-11-06 22:11:43,939 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:11:43,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 233 events. 101/233 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 863 event pairs, 80 based on Foata normal form. 3/132 useless extension candidates. Maximal degree in co-relation 424. Up to 212 conditions per place. [2023-11-06 22:11:43,942 INFO L140 encePairwiseOnDemand]: 610/617 looper letters, 36 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-06 22:11:43,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 193 flow [2023-11-06 22:11:43,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:43,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 837 transitions. [2023-11-06 22:11:43,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521880064829822 [2023-11-06 22:11:43,947 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 837 transitions. [2023-11-06 22:11:43,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 837 transitions. [2023-11-06 22:11:43,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:43,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 837 transitions. [2023-11-06 22:11:43,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:43,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:43,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:43,959 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 115 flow. Second operand 3 states and 837 transitions. [2023-11-06 22:11:43,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 193 flow [2023-11-06 22:11:43,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 183 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:43,964 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 127 flow [2023-11-06 22:11:43,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-11-06 22:11:43,966 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-11-06 22:11:43,966 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 127 flow [2023-11-06 22:11:43,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:43,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:43,968 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-06 22:11:43,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:11:43,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:11:43,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:43,969 INFO L85 PathProgramCache]: Analyzing trace with hash -289487136, now seen corresponding path program 1 times [2023-11-06 22:11:43,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:43,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031605537] [2023-11-06 22:11:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:43,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:44,052 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:11:44,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723464403] [2023-11-06 22:11:44,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:44,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:44,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:44,059 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:44,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:11:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:44,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:11:44,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:44,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:44,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:44,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:44,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:44,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031605537] [2023-11-06 22:11:44,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:11:44,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723464403] [2023-11-06 22:11:44,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723464403] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:44,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:11:44,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-06 22:11:44,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426741240] [2023-11-06 22:11:44,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:44,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:11:44,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:44,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:11:44,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:11:44,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 617 [2023-11-06 22:11:44,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 267.6666666666667) internal successors, (1606), 6 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:44,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:44,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 617 [2023-11-06 22:11:44,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:44,834 INFO L124 PetriNetUnfolderBase]: 103/245 cut-off events. [2023-11-06 22:11:44,834 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:11:44,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 245 events. 103/245 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 924 event pairs, 80 based on Foata normal form. 3/140 useless extension candidates. Maximal degree in co-relation 440. Up to 210 conditions per place. [2023-11-06 22:11:44,837 INFO L140 encePairwiseOnDemand]: 610/617 looper letters, 40 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-11-06 22:11:44,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 269 flow [2023-11-06 22:11:44,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:11:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:11:44,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1651 transitions. [2023-11-06 22:11:44,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4459751485683414 [2023-11-06 22:11:44,846 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1651 transitions. [2023-11-06 22:11:44,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1651 transitions. [2023-11-06 22:11:44,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:44,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1651 transitions. [2023-11-06 22:11:44,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.1666666666667) internal successors, (1651), 6 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:44,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:44,866 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:44,866 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 127 flow. Second operand 6 states and 1651 transitions. [2023-11-06 22:11:44,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 269 flow [2023-11-06 22:11:44,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 265 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:44,870 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 203 flow [2023-11-06 22:11:44,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-11-06 22:11:44,871 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2023-11-06 22:11:44,872 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 203 flow [2023-11-06 22:11:44,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 267.6666666666667) internal successors, (1606), 6 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:44,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:44,874 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-11-06 22:11:44,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:45,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:45,080 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:11:45,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:45,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1881949465, now seen corresponding path program 1 times [2023-11-06 22:11:45,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:45,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096725996] [2023-11-06 22:11:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:45,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:45,202 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:11:45,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983865995] [2023-11-06 22:11:45,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:45,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:45,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:45,204 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:45,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:11:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:45,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:11:45,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:45,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:45,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:45,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096725996] [2023-11-06 22:11:45,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:11:45,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983865995] [2023-11-06 22:11:45,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983865995] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:45,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:11:45,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-06 22:11:45,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11556937] [2023-11-06 22:11:45,682 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:45,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:11:45,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:45,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:11:45,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:11:45,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 617 [2023-11-06 22:11:45,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 203 flow. Second operand has 12 states, 12 states have (on average 267.3333333333333) internal successors, (3208), 12 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:45,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:45,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 617 [2023-11-06 22:11:45,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:46,728 INFO L124 PetriNetUnfolderBase]: 103/269 cut-off events. [2023-11-06 22:11:46,728 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2023-11-06 22:11:46,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 269 events. 103/269 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1097 event pairs, 80 based on Foata normal form. 12/168 useless extension candidates. Maximal degree in co-relation 457. Up to 210 conditions per place. [2023-11-06 22:11:46,731 INFO L140 encePairwiseOnDemand]: 610/617 looper letters, 52 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2023-11-06 22:11:46,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 521 flow [2023-11-06 22:11:46,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:11:46,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:11:46,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3274 transitions. [2023-11-06 22:11:46,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421934089681253 [2023-11-06 22:11:46,745 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3274 transitions. [2023-11-06 22:11:46,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3274 transitions. [2023-11-06 22:11:46,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:46,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3274 transitions. [2023-11-06 22:11:46,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 272.8333333333333) internal successors, (3274), 12 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:46,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 617.0) internal successors, (8021), 13 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:46,777 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 617.0) internal successors, (8021), 13 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:46,777 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 203 flow. Second operand 12 states and 3274 transitions. [2023-11-06 22:11:46,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 521 flow [2023-11-06 22:11:46,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 519 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:46,783 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 355 flow [2023-11-06 22:11:46,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=355, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2023-11-06 22:11:46,785 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2023-11-06 22:11:46,785 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 355 flow [2023-11-06 22:11:46,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 267.3333333333333) internal successors, (3208), 12 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:46,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:46,787 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2023-11-06 22:11:46,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-06 22:11:46,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:46,994 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:11:46,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:46,995 INFO L85 PathProgramCache]: Analyzing trace with hash 468807655, now seen corresponding path program 2 times [2023-11-06 22:11:46,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:46,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597000235] [2023-11-06 22:11:46,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:46,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:47,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:11:47,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453592658] [2023-11-06 22:11:47,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:11:47,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:47,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:47,242 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:47,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:11:47,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:11:47,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:11:47,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:11:47,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:48,026 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:48,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:48,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:48,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597000235] [2023-11-06 22:11:48,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:11:48,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453592658] [2023-11-06 22:11:48,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453592658] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:48,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:11:48,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-11-06 22:11:48,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270563372] [2023-11-06 22:11:48,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:48,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:11:48,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:48,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:11:48,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:11:48,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 617 [2023-11-06 22:11:48,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 355 flow. Second operand has 24 states, 24 states have (on average 267.1666666666667) internal successors, (6412), 24 states have internal predecessors, (6412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:48,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:48,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 617 [2023-11-06 22:11:48,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:50,767 INFO L124 PetriNetUnfolderBase]: 103/317 cut-off events. [2023-11-06 22:11:50,767 INFO L125 PetriNetUnfolderBase]: For 1219/1219 co-relation queries the response was YES. [2023-11-06 22:11:50,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075 conditions, 317 events. 103/317 cut-off events. For 1219/1219 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1245 event pairs, 80 based on Foata normal form. 24/216 useless extension candidates. Maximal degree in co-relation 642. Up to 210 conditions per place. [2023-11-06 22:11:50,771 INFO L140 encePairwiseOnDemand]: 610/617 looper letters, 76 selfloop transitions, 25 changer transitions 0/105 dead transitions. [2023-11-06 22:11:50,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 105 transitions, 1141 flow [2023-11-06 22:11:50,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:11:50,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:11:50,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6520 transitions. [2023-11-06 22:11:50,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403025391680173 [2023-11-06 22:11:50,795 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6520 transitions. [2023-11-06 22:11:50,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6520 transitions. [2023-11-06 22:11:50,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:50,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6520 transitions. [2023-11-06 22:11:50,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 271.6666666666667) internal successors, (6520), 24 states have internal predecessors, (6520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:50,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 617.0) internal successors, (15425), 25 states have internal predecessors, (15425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:50,850 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 617.0) internal successors, (15425), 25 states have internal predecessors, (15425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:50,850 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 355 flow. Second operand 24 states and 6520 transitions. [2023-11-06 22:11:50,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 105 transitions, 1141 flow [2023-11-06 22:11:50,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 105 transitions, 1069 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-06 22:11:50,858 INFO L231 Difference]: Finished difference. Result has 100 places, 69 transitions, 621 flow [2023-11-06 22:11:50,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=621, PETRI_PLACES=100, PETRI_TRANSITIONS=69} [2023-11-06 22:11:50,860 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 59 predicate places. [2023-11-06 22:11:50,860 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 69 transitions, 621 flow [2023-11-06 22:11:50,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 267.1666666666667) internal successors, (6412), 24 states have internal predecessors, (6412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:50,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:50,863 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-11-06 22:11:50,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:51,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:11:51,073 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:11:51,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:51,073 INFO L85 PathProgramCache]: Analyzing trace with hash 308910567, now seen corresponding path program 3 times [2023-11-06 22:11:51,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:51,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067055974] [2023-11-06 22:11:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:51,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:51,523 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:11:51,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931098046] [2023-11-06 22:11:51,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:11:51,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:51,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:51,525 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:51,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:11:52,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:11:52,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:11:52,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:11:52,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-06 22:11:52,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:52,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:52,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067055974] [2023-11-06 22:11:52,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:11:52,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931098046] [2023-11-06 22:11:52,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931098046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:52,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:52,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:11:52,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36608252] [2023-11-06 22:11:52,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:52,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:11:52,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:52,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:11:52,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:11:52,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 617 [2023-11-06 22:11:52,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 69 transitions, 621 flow. Second operand has 6 states, 6 states have (on average 262.1666666666667) internal successors, (1573), 6 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:52,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:52,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 617 [2023-11-06 22:11:52,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:53,022 INFO L124 PetriNetUnfolderBase]: 102/294 cut-off events. [2023-11-06 22:11:53,023 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2023-11-06 22:11:53,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 294 events. 102/294 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1048 event pairs, 80 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 695. Up to 201 conditions per place. [2023-11-06 22:11:53,027 INFO L140 encePairwiseOnDemand]: 609/617 looper letters, 77 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2023-11-06 22:11:53,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 88 transitions, 940 flow [2023-11-06 22:11:53,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:11:53,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:11:53,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1606 transitions. [2023-11-06 22:11:53,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43381955699621827 [2023-11-06 22:11:53,035 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1606 transitions. [2023-11-06 22:11:53,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1606 transitions. [2023-11-06 22:11:53,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:53,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1606 transitions. [2023-11-06 22:11:53,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.6666666666667) internal successors, (1606), 6 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:53,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:53,048 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:53,048 INFO L175 Difference]: Start difference. First operand has 100 places, 69 transitions, 621 flow. Second operand 6 states and 1606 transitions. [2023-11-06 22:11:53,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 88 transitions, 940 flow [2023-11-06 22:11:53,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 88 transitions, 894 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-11-06 22:11:53,066 INFO L231 Difference]: Finished difference. Result has 95 places, 66 transitions, 537 flow [2023-11-06 22:11:53,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=537, PETRI_PLACES=95, PETRI_TRANSITIONS=66} [2023-11-06 22:11:53,068 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 54 predicate places. [2023-11-06 22:11:53,068 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 66 transitions, 537 flow [2023-11-06 22:11:53,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 262.1666666666667) internal successors, (1573), 6 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:53,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:53,069 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-11-06 22:11:53,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:53,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:11:53,288 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:11:53,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:53,288 INFO L85 PathProgramCache]: Analyzing trace with hash 308910668, now seen corresponding path program 1 times [2023-11-06 22:11:53,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:53,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801765699] [2023-11-06 22:11:53,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:53,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:53,680 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:11:53,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944494387] [2023-11-06 22:11:53,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:53,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:53,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:53,687 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:53,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:11:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:55,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 2138 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:11:55,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:55,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:55,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:55,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801765699] [2023-11-06 22:11:55,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:11:55,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944494387] [2023-11-06 22:11:55,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944494387] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:55,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:11:55,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-11-06 22:11:55,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636753812] [2023-11-06 22:11:55,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:55,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-06 22:11:55,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:55,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-06 22:11:55,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-11-06 22:11:56,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 617 [2023-11-06 22:11:56,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 66 transitions, 537 flow. Second operand has 32 states, 32 states have (on average 267.15625) internal successors, (8549), 32 states have internal predecessors, (8549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:56,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:56,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 617 [2023-11-06 22:11:56,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:58,321 INFO L124 PetriNetUnfolderBase]: 102/318 cut-off events. [2023-11-06 22:11:58,322 INFO L125 PetriNetUnfolderBase]: For 5206/5206 co-relation queries the response was YES. [2023-11-06 22:11:58,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 318 events. 102/318 cut-off events. For 5206/5206 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1104 event pairs, 80 based on Foata normal form. 16/232 useless extension candidates. Maximal degree in co-relation 680. Up to 209 conditions per place. [2023-11-06 22:11:58,325 INFO L140 encePairwiseOnDemand]: 612/617 looper letters, 62 selfloop transitions, 34 changer transitions 0/100 dead transitions. [2023-11-06 22:11:58,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 100 transitions, 1130 flow [2023-11-06 22:11:58,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-06 22:11:58,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-06 22:11:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8621 transitions. [2023-11-06 22:11:58,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43663897893030795 [2023-11-06 22:11:58,353 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8621 transitions. [2023-11-06 22:11:58,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8621 transitions. [2023-11-06 22:11:58,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:58,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8621 transitions. [2023-11-06 22:11:58,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 269.40625) internal successors, (8621), 32 states have internal predecessors, (8621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:58,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 617.0) internal successors, (20361), 33 states have internal predecessors, (20361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:58,412 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 617.0) internal successors, (20361), 33 states have internal predecessors, (20361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:58,412 INFO L175 Difference]: Start difference. First operand has 95 places, 66 transitions, 537 flow. Second operand 32 states and 8621 transitions. [2023-11-06 22:11:58,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 100 transitions, 1130 flow [2023-11-06 22:11:58,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 100 transitions, 1124 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:58,429 INFO L231 Difference]: Finished difference. Result has 133 places, 75 transitions, 736 flow [2023-11-06 22:11:58,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=736, PETRI_PLACES=133, PETRI_TRANSITIONS=75} [2023-11-06 22:11:58,430 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2023-11-06 22:11:58,430 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 75 transitions, 736 flow [2023-11-06 22:11:58,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 267.15625) internal successors, (8549), 32 states have internal predecessors, (8549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:58,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:58,433 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 2, 1, 1, 1] [2023-11-06 22:11:58,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-06 22:11:58,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:58,644 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:11:58,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:58,644 INFO L85 PathProgramCache]: Analyzing trace with hash -299452852, now seen corresponding path program 2 times [2023-11-06 22:11:58,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:58,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883715963] [2023-11-06 22:11:58,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:58,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:59,231 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:11:59,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479466611] [2023-11-06 22:11:59,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:11:59,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:59,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:59,242 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:59,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:12:03,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:12:03,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:12:03,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:12:03,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-11-06 22:12:03,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-11-06 22:12:03,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:03,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883715963] [2023-11-06 22:12:03,574 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:12:03,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479466611] [2023-11-06 22:12:03,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479466611] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:12:03,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:03,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:12:03,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288834332] [2023-11-06 22:12:03,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:12:03,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:12:03,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:03,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:12:03,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:12:04,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 617 [2023-11-06 22:12:04,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 75 transitions, 736 flow. Second operand has 10 states, 10 states have (on average 259.4) internal successors, (2594), 10 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:04,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:04,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 617 [2023-11-06 22:12:04,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:05,444 INFO L124 PetriNetUnfolderBase]: 104/351 cut-off events. [2023-11-06 22:12:05,445 INFO L125 PetriNetUnfolderBase]: For 2036/2036 co-relation queries the response was YES. [2023-11-06 22:12:05,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1437 conditions, 351 events. 104/351 cut-off events. For 2036/2036 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1060 event pairs, 80 based on Foata normal form. 32/282 useless extension candidates. Maximal degree in co-relation 980. Up to 202 conditions per place. [2023-11-06 22:12:05,449 INFO L140 encePairwiseOnDemand]: 610/617 looper letters, 122 selfloop transitions, 13 changer transitions 0/139 dead transitions. [2023-11-06 22:12:05,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 139 transitions, 1731 flow [2023-11-06 22:12:05,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:12:05,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:12:05,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2889 transitions. [2023-11-06 22:12:05,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42566671578016796 [2023-11-06 22:12:05,459 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2889 transitions. [2023-11-06 22:12:05,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2889 transitions. [2023-11-06 22:12:05,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:05,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2889 transitions. [2023-11-06 22:12:05,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 262.6363636363636) internal successors, (2889), 11 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:05,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 617.0) internal successors, (7404), 12 states have internal predecessors, (7404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:05,479 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 617.0) internal successors, (7404), 12 states have internal predecessors, (7404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:05,479 INFO L175 Difference]: Start difference. First operand has 133 places, 75 transitions, 736 flow. Second operand 11 states and 2889 transitions. [2023-11-06 22:12:05,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 139 transitions, 1731 flow [2023-11-06 22:12:05,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 139 transitions, 1578 flow, removed 9 selfloop flow, removed 22 redundant places. [2023-11-06 22:12:05,504 INFO L231 Difference]: Finished difference. Result has 123 places, 81 transitions, 780 flow [2023-11-06 22:12:05,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=780, PETRI_PLACES=123, PETRI_TRANSITIONS=81} [2023-11-06 22:12:05,506 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2023-11-06 22:12:05,506 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 81 transitions, 780 flow [2023-11-06 22:12:05,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 259.4) internal successors, (2594), 10 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:05,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:05,507 INFO L208 CegarLoopForPetriNet]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:12:05,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:05,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:05,732 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:12:05,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:05,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1397394885, now seen corresponding path program 1 times [2023-11-06 22:12:05,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:05,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594157199] [2023-11-06 22:12:05,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:05,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:06,784 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:12:06,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543900402] [2023-11-06 22:12:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:06,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:06,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:06,787 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:06,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:12:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:09,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 5428 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:12:09,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-11-06 22:12:10,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-11-06 22:12:10,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:10,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594157199] [2023-11-06 22:12:10,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:12:10,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543900402] [2023-11-06 22:12:10,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543900402] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:12:10,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:10,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-06 22:12:10,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250253142] [2023-11-06 22:12:10,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:12:10,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:12:10,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:10,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:12:10,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:12:10,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 617 [2023-11-06 22:12:10,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 81 transitions, 780 flow. Second operand has 8 states, 8 states have (on average 268.375) internal successors, (2147), 8 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:10,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:10,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 617 [2023-11-06 22:12:10,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:11,280 INFO L124 PetriNetUnfolderBase]: 193/536 cut-off events. [2023-11-06 22:12:11,281 INFO L125 PetriNetUnfolderBase]: For 4909/4909 co-relation queries the response was YES. [2023-11-06 22:12:11,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2797 conditions, 536 events. 193/536 cut-off events. For 4909/4909 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 957 event pairs, 80 based on Foata normal form. 4/439 useless extension candidates. Maximal degree in co-relation 2440. Up to 303 conditions per place. [2023-11-06 22:12:11,287 INFO L140 encePairwiseOnDemand]: 612/617 looper letters, 220 selfloop transitions, 28 changer transitions 0/252 dead transitions. [2023-11-06 22:12:11,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 252 transitions, 3271 flow [2023-11-06 22:12:11,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:12:11,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:12:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2184 transitions. [2023-11-06 22:12:11,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44246353322528365 [2023-11-06 22:12:11,294 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2184 transitions. [2023-11-06 22:12:11,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2184 transitions. [2023-11-06 22:12:11,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:11,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2184 transitions. [2023-11-06 22:12:11,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:11,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 617.0) internal successors, (5553), 9 states have internal predecessors, (5553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:11,307 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 617.0) internal successors, (5553), 9 states have internal predecessors, (5553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:11,307 INFO L175 Difference]: Start difference. First operand has 123 places, 81 transitions, 780 flow. Second operand 8 states and 2184 transitions. [2023-11-06 22:12:11,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 252 transitions, 3271 flow [2023-11-06 22:12:11,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 252 transitions, 3244 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-06 22:12:11,348 INFO L231 Difference]: Finished difference. Result has 131 places, 99 transitions, 1315 flow [2023-11-06 22:12:11,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1315, PETRI_PLACES=131, PETRI_TRANSITIONS=99} [2023-11-06 22:12:11,349 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 90 predicate places. [2023-11-06 22:12:11,349 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 99 transitions, 1315 flow [2023-11-06 22:12:11,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 268.375) internal successors, (2147), 8 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:11,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:11,350 INFO L208 CegarLoopForPetriNet]: trace histogram [62, 3, 2, 1, 1] [2023-11-06 22:12:11,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:11,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:12:11,570 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:12:11,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:11,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1396394560, now seen corresponding path program 3 times [2023-11-06 22:12:11,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:11,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931574700] [2023-11-06 22:12:11,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:11,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:12,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:12:12,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117278355] [2023-11-06 22:12:12,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:12:12,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:12,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:12,646 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:12,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:12:15,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:12:15,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:12:15,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:12:15,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 1894 trivial. 0 not checked. [2023-11-06 22:12:15,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:15,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:15,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931574700] [2023-11-06 22:12:15,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:12:15,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117278355] [2023-11-06 22:12:15,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117278355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:15,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:15,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:12:15,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426277033] [2023-11-06 22:12:15,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:15,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:12:15,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:15,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:12:15,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:12:15,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 617 [2023-11-06 22:12:15,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 99 transitions, 1315 flow. Second operand has 5 states, 5 states have (on average 263.6) internal successors, (1318), 5 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:15,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:15,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 617 [2023-11-06 22:12:15,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:15,941 INFO L124 PetriNetUnfolderBase]: 105/420 cut-off events. [2023-11-06 22:12:15,941 INFO L125 PetriNetUnfolderBase]: For 5714/5714 co-relation queries the response was YES. [2023-11-06 22:12:15,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 420 events. 105/420 cut-off events. For 5714/5714 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 837 event pairs, 80 based on Foata normal form. 116/435 useless extension candidates. Maximal degree in co-relation 1564. Up to 208 conditions per place. [2023-11-06 22:12:15,947 INFO L140 encePairwiseOnDemand]: 613/617 looper letters, 58 selfloop transitions, 17 changer transitions 0/79 dead transitions. [2023-11-06 22:12:15,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 79 transitions, 1078 flow [2023-11-06 22:12:15,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:12:15,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:12:15,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1345 transitions. [2023-11-06 22:12:15,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4359805510534846 [2023-11-06 22:12:15,950 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1345 transitions. [2023-11-06 22:12:15,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1345 transitions. [2023-11-06 22:12:15,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:15,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1345 transitions. [2023-11-06 22:12:15,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:15,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 617.0) internal successors, (3702), 6 states have internal predecessors, (3702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:15,957 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 617.0) internal successors, (3702), 6 states have internal predecessors, (3702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:15,957 INFO L175 Difference]: Start difference. First operand has 131 places, 99 transitions, 1315 flow. Second operand 5 states and 1345 transitions. [2023-11-06 22:12:15,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 79 transitions, 1078 flow [2023-11-06 22:12:15,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 79 transitions, 852 flow, removed 86 selfloop flow, removed 13 redundant places. [2023-11-06 22:12:15,986 INFO L231 Difference]: Finished difference. Result has 121 places, 79 transitions, 736 flow [2023-11-06 22:12:15,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=736, PETRI_PLACES=121, PETRI_TRANSITIONS=79} [2023-11-06 22:12:15,988 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2023-11-06 22:12:15,988 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 79 transitions, 736 flow [2023-11-06 22:12:15,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 263.6) internal successors, (1318), 5 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:15,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:15,989 INFO L208 CegarLoopForPetriNet]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1] [2023-11-06 22:12:16,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:16,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:12:16,199 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:12:16,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:16,200 INFO L85 PathProgramCache]: Analyzing trace with hash 181528085, now seen corresponding path program 2 times [2023-11-06 22:12:16,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:16,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312835171] [2023-11-06 22:12:16,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:16,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:19,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:12:19,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389597583] [2023-11-06 22:12:19,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:12:19,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:19,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:19,214 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:19,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:12:24,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:12:24,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:12:24,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:12:24,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17226 trivial. 0 not checked. [2023-11-06 22:12:24,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:24,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:24,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312835171] [2023-11-06 22:12:24,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:12:24,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389597583] [2023-11-06 22:12:24,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389597583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:24,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:24,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:12:24,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100749263] [2023-11-06 22:12:24,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:24,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:24,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:24,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:24,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:24,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 617 [2023-11-06 22:12:24,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 79 transitions, 736 flow. Second operand has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:24,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:24,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 617 [2023-11-06 22:12:24,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:25,490 INFO L124 PetriNetUnfolderBase]: 84/375 cut-off events. [2023-11-06 22:12:25,491 INFO L125 PetriNetUnfolderBase]: For 3464/3464 co-relation queries the response was YES. [2023-11-06 22:12:25,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1248 conditions, 375 events. 84/375 cut-off events. For 3464/3464 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 704 event pairs, 32 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 869. Up to 274 conditions per place. [2023-11-06 22:12:25,493 INFO L140 encePairwiseOnDemand]: 612/617 looper letters, 90 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2023-11-06 22:12:25,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 97 transitions, 958 flow [2023-11-06 22:12:25,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:25,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 850 transitions. [2023-11-06 22:12:25,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592112371690978 [2023-11-06 22:12:25,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 850 transitions. [2023-11-06 22:12:25,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 850 transitions. [2023-11-06 22:12:25,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:25,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 850 transitions. [2023-11-06 22:12:25,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:25,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:25,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:25,500 INFO L175 Difference]: Start difference. First operand has 121 places, 79 transitions, 736 flow. Second operand 3 states and 850 transitions. [2023-11-06 22:12:25,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 97 transitions, 958 flow [2023-11-06 22:12:25,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 97 transitions, 925 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-06 22:12:25,518 INFO L231 Difference]: Finished difference. Result has 120 places, 79 transitions, 719 flow [2023-11-06 22:12:25,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=719, PETRI_PLACES=120, PETRI_TRANSITIONS=79} [2023-11-06 22:12:25,519 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 79 predicate places. [2023-11-06 22:12:25,520 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 79 transitions, 719 flow [2023-11-06 22:12:25,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:25,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:25,520 INFO L208 CegarLoopForPetriNet]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1] [2023-11-06 22:12:25,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:25,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:12:25,733 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:12:25,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash 181528084, now seen corresponding path program 1 times [2023-11-06 22:12:25,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:25,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728880172] [2023-11-06 22:12:25,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:25,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:28,918 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:12:28,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977449756] [2023-11-06 22:12:28,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:28,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:28,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:28,927 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:28,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:12:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:38,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 16116 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:12:38,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2023-11-06 22:12:39,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2023-11-06 22:12:39,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:39,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728880172] [2023-11-06 22:12:39,698 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:12:39,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977449756] [2023-11-06 22:12:39,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977449756] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:12:39,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:39,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-11-06 22:12:39,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225708767] [2023-11-06 22:12:39,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:12:39,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:12:39,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:39,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:12:39,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:12:39,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 617 [2023-11-06 22:12:39,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 79 transitions, 719 flow. Second operand has 12 states, 12 states have (on average 268.8333333333333) internal successors, (3226), 12 states have internal predecessors, (3226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:39,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:39,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 617 [2023-11-06 22:12:39,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:41,224 INFO L124 PetriNetUnfolderBase]: 90/513 cut-off events. [2023-11-06 22:12:41,224 INFO L125 PetriNetUnfolderBase]: For 5958/5958 co-relation queries the response was YES. [2023-11-06 22:12:41,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 513 events. 90/513 cut-off events. For 5958/5958 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 660 event pairs, 64 based on Foata normal form. 4/476 useless extension candidates. Maximal degree in co-relation 1406. Up to 166 conditions per place. [2023-11-06 22:12:41,228 INFO L140 encePairwiseOnDemand]: 613/617 looper letters, 348 selfloop transitions, 12 changer transitions 0/364 dead transitions. [2023-11-06 22:12:41,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 364 transitions, 2943 flow [2023-11-06 22:12:41,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:12:41,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:12:41,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3255 transitions. [2023-11-06 22:12:41,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43962722852512154 [2023-11-06 22:12:41,234 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3255 transitions. [2023-11-06 22:12:41,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3255 transitions. [2023-11-06 22:12:41,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:41,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3255 transitions. [2023-11-06 22:12:41,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 271.25) internal successors, (3255), 12 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:41,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 617.0) internal successors, (8021), 13 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:41,244 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 617.0) internal successors, (8021), 13 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:41,245 INFO L175 Difference]: Start difference. First operand has 120 places, 79 transitions, 719 flow. Second operand 12 states and 3255 transitions. [2023-11-06 22:12:41,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 364 transitions, 2943 flow [2023-11-06 22:12:41,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 364 transitions, 2937 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:12:41,265 INFO L231 Difference]: Finished difference. Result has 134 places, 84 transitions, 1053 flow [2023-11-06 22:12:41,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1053, PETRI_PLACES=134, PETRI_TRANSITIONS=84} [2023-11-06 22:12:41,266 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 93 predicate places. [2023-11-06 22:12:41,266 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 84 transitions, 1053 flow [2023-11-06 22:12:41,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 268.8333333333333) internal successors, (3226), 12 states have internal predecessors, (3226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:41,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:41,268 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1] [2023-11-06 22:12:41,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:41,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:12:41,495 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:12:41,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:41,495 INFO L85 PathProgramCache]: Analyzing trace with hash 545537636, now seen corresponding path program 2 times [2023-11-06 22:12:41,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:41,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442019378] [2023-11-06 22:12:41,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:41,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:46,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:12:46,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [734692253] [2023-11-06 22:12:46,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:12:46,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:46,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:46,549 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:46,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:12:57,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:12:57,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:12:57,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:12:57,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-11-06 22:12:57,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:57,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:57,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442019378] [2023-11-06 22:12:57,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:12:57,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734692253] [2023-11-06 22:12:57,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734692253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:57,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:57,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:12:57,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699338666] [2023-11-06 22:12:57,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:57,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:57,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:57,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:57,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:57,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 617 [2023-11-06 22:12:57,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 84 transitions, 1053 flow. Second operand has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:57,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:57,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 617 [2023-11-06 22:12:57,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:58,344 INFO L124 PetriNetUnfolderBase]: 68/481 cut-off events. [2023-11-06 22:12:58,344 INFO L125 PetriNetUnfolderBase]: For 6379/6379 co-relation queries the response was YES. [2023-11-06 22:12:58,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 481 events. 68/481 cut-off events. For 6379/6379 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 689 event pairs, 0 based on Foata normal form. 17/448 useless extension candidates. Maximal degree in co-relation 1431. Up to 441 conditions per place. [2023-11-06 22:12:58,349 INFO L140 encePairwiseOnDemand]: 614/617 looper letters, 95 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2023-11-06 22:12:58,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 101 transitions, 1281 flow [2023-11-06 22:12:58,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:58,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:58,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 851 transitions. [2023-11-06 22:12:58,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4597514856834144 [2023-11-06 22:12:58,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 851 transitions. [2023-11-06 22:12:58,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 851 transitions. [2023-11-06 22:12:58,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:58,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 851 transitions. [2023-11-06 22:12:58,353 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) [2023-11-06 22:12:58,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:58,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:58,356 INFO L175 Difference]: Start difference. First operand has 134 places, 84 transitions, 1053 flow. Second operand 3 states and 851 transitions. [2023-11-06 22:12:58,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 101 transitions, 1281 flow [2023-11-06 22:12:58,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 101 transitions, 1271 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:12:58,373 INFO L231 Difference]: Finished difference. Result has 130 places, 83 transitions, 1045 flow [2023-11-06 22:12:58,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1045, PETRI_PLACES=130, PETRI_TRANSITIONS=83} [2023-11-06 22:12:58,373 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2023-11-06 22:12:58,374 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 83 transitions, 1045 flow [2023-11-06 22:12:58,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:58,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:58,374 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 2, 1, 1, 1, 1, 1] [2023-11-06 22:12:58,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:58,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:12:58,575 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:12:58,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:58,575 INFO L85 PathProgramCache]: Analyzing trace with hash 275692296, now seen corresponding path program 1 times [2023-11-06 22:12:58,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:58,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544208550] [2023-11-06 22:12:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:58,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:03,701 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:13:03,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1699545209] [2023-11-06 22:13:03,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:03,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:03,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:03,705 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:03,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73fe269a-a8b0-4206-95b0-f3c13822a0d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process