./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/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_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/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_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:04:40,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:04:40,504 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:04:40,510 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:04:40,510 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:04:40,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:04:40,539 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:04:40,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:04:40,541 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:04:40,542 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:04:40,543 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:04:40,543 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:04:40,544 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:04:40,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:04:40,546 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:04:40,546 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:04:40,547 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:04:40,548 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:04:40,548 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:04:40,549 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:04:40,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:04:40,550 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:04:40,551 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:04:40,551 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:04:40,552 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:04:40,552 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:04:40,553 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:04:40,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:04:40,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:04:40,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:04:40,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:04:40,556 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:04:40,556 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:04:40,557 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:04:40,557 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:04:40,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:04:40,558 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:04:40,559 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:04:40,559 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:04:40,560 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:04:40,560 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:04:40,561 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_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2023-11-06 23:04:40,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:04:40,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:04:40,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:04:40,920 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:04:40,920 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:04:40,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-11-06 23:04:44,001 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:04:44,252 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:04:44,253 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-11-06 23:04:44,269 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/data/b678bcf2c/3c15823f067441a5b8732a93c83a9019/FLAG120163735 [2023-11-06 23:04:44,289 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/data/b678bcf2c/3c15823f067441a5b8732a93c83a9019 [2023-11-06 23:04:44,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:04:44,298 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:04:44,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:04:44,303 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:04:44,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:04:44,313 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:04:44" (1/1) ... [2023-11-06 23:04:44,314 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@383797c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:44, skipping insertion in model container [2023-11-06 23:04:44,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:04:44" (1/1) ... [2023-11-06 23:04:44,432 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:04:44,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:04:44,932 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:04:45,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:04:45,065 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:04:45,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:45 WrapperNode [2023-11-06 23:04:45,066 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:04:45,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:04:45,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:04:45,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:04:45,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:45" (1/1) ... [2023-11-06 23:04:45,102 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:45" (1/1) ... [2023-11-06 23:04:45,143 INFO L138 Inliner]: procedures = 165, calls = 36, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 130 [2023-11-06 23:04:45,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:04:45,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:04:45,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:04:45,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:04:45,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:45" (1/1) ... [2023-11-06 23:04:45,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:45" (1/1) ... [2023-11-06 23:04:45,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:45" (1/1) ... [2023-11-06 23:04:45,174 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:45" (1/1) ... [2023-11-06 23:04:45,181 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:45" (1/1) ... [2023-11-06 23:04:45,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:45" (1/1) ... [2023-11-06 23:04:45,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:45" (1/1) ... [2023-11-06 23:04:45,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:45" (1/1) ... [2023-11-06 23:04:45,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:04:45,205 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:04:45,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:04:45,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:04:45,206 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:45" (1/1) ... [2023-11-06 23:04:45,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:04:45,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:04:45,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:04:45,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:04:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:04:45,295 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-11-06 23:04:45,295 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-11-06 23:04:45,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:04:45,295 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 23:04:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:04:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:04:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:04:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:04:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:04:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:04:45,298 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:04:45,485 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:04:45,487 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:04:45,829 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:04:45,839 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:04:45,839 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 23:04:45,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:04:45 BoogieIcfgContainer [2023-11-06 23:04:45,842 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:04:45,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:04:45,845 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:04:45,848 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:04:45,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:04:44" (1/3) ... [2023-11-06 23:04:45,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775acdbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:04:45, skipping insertion in model container [2023-11-06 23:04:45,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:45" (2/3) ... [2023-11-06 23:04:45,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775acdbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:04:45, skipping insertion in model container [2023-11-06 23:04:45,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:04:45" (3/3) ... [2023-11-06 23:04:45,851 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-11-06 23:04:45,860 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:04:45,884 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:04:45,885 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-06 23:04:45,885 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:04:45,970 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:04:46,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 160 transitions, 324 flow [2023-11-06 23:04:46,113 INFO L124 PetriNetUnfolderBase]: 12/159 cut-off events. [2023-11-06 23:04:46,113 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:04:46,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 159 events. 12/159 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 346 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-11-06 23:04:46,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 160 transitions, 324 flow [2023-11-06 23:04:46,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 159 transitions, 321 flow [2023-11-06 23:04:46,130 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:04:46,140 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 159 transitions, 321 flow [2023-11-06 23:04:46,143 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 159 transitions, 321 flow [2023-11-06 23:04:46,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 159 transitions, 321 flow [2023-11-06 23:04:46,186 INFO L124 PetriNetUnfolderBase]: 12/159 cut-off events. [2023-11-06 23:04:46,186 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:04:46,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 159 events. 12/159 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 346 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-11-06 23:04:46,194 INFO L119 LiptonReduction]: Number of co-enabled transitions 7104 [2023-11-06 23:04:51,301 INFO L134 LiptonReduction]: Checked pairs total: 9374 [2023-11-06 23:04:51,302 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-11-06 23:04:51,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:04:51,325 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;@218b1a44, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:04:51,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-06 23:04:51,334 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:04:51,334 INFO L124 PetriNetUnfolderBase]: 4/21 cut-off events. [2023-11-06 23:04:51,335 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:04:51,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:51,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:04:51,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:04:51,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:51,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1833517798, now seen corresponding path program 1 times [2023-11-06 23:04:51,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:51,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212803993] [2023-11-06 23:04:51,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:51,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:52,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:52,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212803993] [2023-11-06 23:04:52,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212803993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:52,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:52,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:04:52,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577759386] [2023-11-06 23:04:52,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:52,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:04:52,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:52,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:04:52,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:04:52,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-11-06 23:04:52,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 32 transitions, 67 flow. Second operand has 5 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:52,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:52,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-11-06 23:04:52,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:52,490 INFO L124 PetriNetUnfolderBase]: 332/587 cut-off events. [2023-11-06 23:04:52,490 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:04:52,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1178 conditions, 587 events. 332/587 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2376 event pairs, 25 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 1169. Up to 274 conditions per place. [2023-11-06 23:04:52,498 INFO L140 encePairwiseOnDemand]: 318/329 looper letters, 67 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2023-11-06 23:04:52,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 78 transitions, 313 flow [2023-11-06 23:04:52,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:04:52,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:04:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 794 transitions. [2023-11-06 23:04:52,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826747720364742 [2023-11-06 23:04:52,520 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 794 transitions. [2023-11-06 23:04:52,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 794 transitions. [2023-11-06 23:04:52,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:52,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 794 transitions. [2023-11-06 23:04:52,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.8) internal successors, (794), 5 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:52,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:52,545 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:52,548 INFO L175 Difference]: Start difference. First operand has 30 places, 32 transitions, 67 flow. Second operand 5 states and 794 transitions. [2023-11-06 23:04:52,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 78 transitions, 313 flow [2023-11-06 23:04:52,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 78 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:04:52,554 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 136 flow [2023-11-06 23:04:52,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2023-11-06 23:04:52,560 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2023-11-06 23:04:52,561 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 136 flow [2023-11-06 23:04:52,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:52,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:52,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:52,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:04:52,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:04:52,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:52,564 INFO L85 PathProgramCache]: Analyzing trace with hash 797449378, now seen corresponding path program 1 times [2023-11-06 23:04:52,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:52,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610987087] [2023-11-06 23:04:52,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:52,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:52,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:52,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610987087] [2023-11-06 23:04:52,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610987087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:52,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:52,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:04:52,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536656596] [2023-11-06 23:04:52,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:52,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:04:52,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:52,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:04:52,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:04:52,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 329 [2023-11-06 23:04:52,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:52,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:52,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 329 [2023-11-06 23:04:52,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:53,022 INFO L124 PetriNetUnfolderBase]: 199/363 cut-off events. [2023-11-06 23:04:53,022 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2023-11-06 23:04:53,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 363 events. 199/363 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1274 event pairs, 99 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 913. Up to 328 conditions per place. [2023-11-06 23:04:53,027 INFO L140 encePairwiseOnDemand]: 325/329 looper letters, 37 selfloop transitions, 4 changer transitions 2/44 dead transitions. [2023-11-06 23:04:53,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 44 transitions, 226 flow [2023-11-06 23:04:53,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:04:53,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:04:53,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 612 transitions. [2023-11-06 23:04:53,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46504559270516715 [2023-11-06 23:04:53,031 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 612 transitions. [2023-11-06 23:04:53,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 612 transitions. [2023-11-06 23:04:53,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:53,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 612 transitions. [2023-11-06 23:04:53,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:53,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 329.0) internal successors, (1645), 5 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:53,040 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 329.0) internal successors, (1645), 5 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:53,040 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 136 flow. Second operand 4 states and 612 transitions. [2023-11-06 23:04:53,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 44 transitions, 226 flow [2023-11-06 23:04:53,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 204 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-06 23:04:53,045 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 111 flow [2023-11-06 23:04:53,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-11-06 23:04:53,046 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2023-11-06 23:04:53,046 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 111 flow [2023-11-06 23:04:53,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:53,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:53,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:53,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:04:53,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:04:53,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:53,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1066121759, now seen corresponding path program 1 times [2023-11-06 23:04:53,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:53,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083342224] [2023-11-06 23:04:53,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:53,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:53,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:53,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:53,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083342224] [2023-11-06 23:04:53,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083342224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:53,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:53,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:04:53,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843668106] [2023-11-06 23:04:53,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:53,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:04:53,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:53,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:04:53,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:04:53,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 329 [2023-11-06 23:04:53,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:53,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:53,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 329 [2023-11-06 23:04:53,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:53,251 INFO L124 PetriNetUnfolderBase]: 227/415 cut-off events. [2023-11-06 23:04:53,251 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-11-06 23:04:53,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 415 events. 227/415 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1737 event pairs, 23 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 982. Up to 348 conditions per place. [2023-11-06 23:04:53,255 INFO L140 encePairwiseOnDemand]: 324/329 looper letters, 49 selfloop transitions, 2 changer transitions 1/53 dead transitions. [2023-11-06 23:04:53,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 266 flow [2023-11-06 23:04:53,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:04:53,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:04:53,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-11-06 23:04:53,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2023-11-06 23:04:53,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-11-06 23:04:53,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-11-06 23:04:53,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:53,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-11-06 23:04:53,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:53,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:53,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:53,265 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 111 flow. Second operand 3 states and 483 transitions. [2023-11-06 23:04:53,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 266 flow [2023-11-06 23:04:53,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 263 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:04:53,268 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 124 flow [2023-11-06 23:04:53,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-11-06 23:04:53,269 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-11-06 23:04:53,269 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 124 flow [2023-11-06 23:04:53,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:53,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:53,271 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:53,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:04:53,271 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:04:53,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:53,272 INFO L85 PathProgramCache]: Analyzing trace with hash 451406690, now seen corresponding path program 1 times [2023-11-06 23:04:53,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:53,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382720688] [2023-11-06 23:04:53,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:53,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:53,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:53,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382720688] [2023-11-06 23:04:53,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382720688] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:04:53,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521766257] [2023-11-06 23:04:53,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:53,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:04:53,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:04:53,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:04:53,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:04:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:53,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 23:04:53,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:04:53,801 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 23:04:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:53,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:04:53,943 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-11-06 23:04:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:53,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521766257] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:04:53,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:04:53,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2023-11-06 23:04:53,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819669537] [2023-11-06 23:04:53,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:04:53,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 23:04:53,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:53,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 23:04:53,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:04:54,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-11-06 23:04:54,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 124 flow. Second operand has 12 states, 12 states have (on average 143.5) internal successors, (1722), 12 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:54,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:54,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-11-06 23:04:54,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:54,640 INFO L124 PetriNetUnfolderBase]: 210/383 cut-off events. [2023-11-06 23:04:54,640 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-11-06 23:04:54,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 383 events. 210/383 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1451 event pairs, 62 based on Foata normal form. 12/332 useless extension candidates. Maximal degree in co-relation 971. Up to 191 conditions per place. [2023-11-06 23:04:54,645 INFO L140 encePairwiseOnDemand]: 324/329 looper letters, 42 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2023-11-06 23:04:54,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 48 transitions, 254 flow [2023-11-06 23:04:54,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:04:54,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:04:54,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 606 transitions. [2023-11-06 23:04:54,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46048632218844987 [2023-11-06 23:04:54,648 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 606 transitions. [2023-11-06 23:04:54,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 606 transitions. [2023-11-06 23:04:54,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:54,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 606 transitions. [2023-11-06 23:04:54,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:54,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 329.0) internal successors, (1645), 5 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:54,657 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 329.0) internal successors, (1645), 5 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:54,657 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 124 flow. Second operand 4 states and 606 transitions. [2023-11-06 23:04:54,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 48 transitions, 254 flow [2023-11-06 23:04:54,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 245 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 23:04:54,661 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 123 flow [2023-11-06 23:04:54,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-11-06 23:04:54,662 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-11-06 23:04:54,663 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 123 flow [2023-11-06 23:04:54,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 143.5) internal successors, (1722), 12 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:54,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:54,665 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:54,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:04:54,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:04:54,872 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:04:54,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:54,873 INFO L85 PathProgramCache]: Analyzing trace with hash 451406691, now seen corresponding path program 1 times [2023-11-06 23:04:54,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:54,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165482812] [2023-11-06 23:04:54,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:54,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:04:54,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:54,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165482812] [2023-11-06 23:04:54,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165482812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:54,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:54,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:04:54,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860368221] [2023-11-06 23:04:54,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:54,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:04:54,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:54,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:04:54,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:04:55,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 329 [2023-11-06 23:04:55,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:55,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:55,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 329 [2023-11-06 23:04:55,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:55,167 INFO L124 PetriNetUnfolderBase]: 235/429 cut-off events. [2023-11-06 23:04:55,168 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2023-11-06 23:04:55,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1108 conditions, 429 events. 235/429 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1505 event pairs, 105 based on Foata normal form. 12/371 useless extension candidates. Maximal degree in co-relation 1091. Up to 367 conditions per place. [2023-11-06 23:04:55,172 INFO L140 encePairwiseOnDemand]: 325/329 looper letters, 44 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2023-11-06 23:04:55,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 264 flow [2023-11-06 23:04:55,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:04:55,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:04:55,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-11-06 23:04:55,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47922998986828774 [2023-11-06 23:04:55,175 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-11-06 23:04:55,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-11-06 23:04:55,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:55,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-11-06 23:04:55,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:55,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:55,180 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:55,180 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 123 flow. Second operand 3 states and 473 transitions. [2023-11-06 23:04:55,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 264 flow [2023-11-06 23:04:55,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 50 transitions, 254 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:04:55,184 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 141 flow [2023-11-06 23:04:55,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2023-11-06 23:04:55,187 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-11-06 23:04:55,187 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 141 flow [2023-11-06 23:04:55,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:55,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:55,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:55,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:04:55,188 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:04:55,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:55,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1641519272, now seen corresponding path program 1 times [2023-11-06 23:04:55,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:55,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043251022] [2023-11-06 23:04:55,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:55,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:55,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:55,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043251022] [2023-11-06 23:04:55,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043251022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:55,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:55,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:04:55,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149644693] [2023-11-06 23:04:55,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:55,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:04:55,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:55,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:04:55,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:04:55,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 329 [2023-11-06 23:04:55,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 141 flow. Second operand has 5 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:55,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:55,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 329 [2023-11-06 23:04:55,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:55,905 INFO L124 PetriNetUnfolderBase]: 475/835 cut-off events. [2023-11-06 23:04:55,905 INFO L125 PetriNetUnfolderBase]: For 427/427 co-relation queries the response was YES. [2023-11-06 23:04:55,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2190 conditions, 835 events. 475/835 cut-off events. For 427/427 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3461 event pairs, 43 based on Foata normal form. 0/705 useless extension candidates. Maximal degree in co-relation 2173. Up to 386 conditions per place. [2023-11-06 23:04:55,914 INFO L140 encePairwiseOnDemand]: 317/329 looper letters, 87 selfloop transitions, 23 changer transitions 0/111 dead transitions. [2023-11-06 23:04:55,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 111 transitions, 638 flow [2023-11-06 23:04:55,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:04:55,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:04:55,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 922 transitions. [2023-11-06 23:04:55,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46707193515704154 [2023-11-06 23:04:55,919 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 922 transitions. [2023-11-06 23:04:55,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 922 transitions. [2023-11-06 23:04:55,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:55,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 922 transitions. [2023-11-06 23:04:55,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 153.66666666666666) internal successors, (922), 6 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:55,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 329.0) internal successors, (2303), 7 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:55,930 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 329.0) internal successors, (2303), 7 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:55,931 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 141 flow. Second operand 6 states and 922 transitions. [2023-11-06 23:04:55,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 111 transitions, 638 flow [2023-11-06 23:04:55,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 111 transitions, 616 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 23:04:55,939 INFO L231 Difference]: Finished difference. Result has 48 places, 55 transitions, 317 flow [2023-11-06 23:04:55,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=317, PETRI_PLACES=48, PETRI_TRANSITIONS=55} [2023-11-06 23:04:55,942 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2023-11-06 23:04:55,942 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 55 transitions, 317 flow [2023-11-06 23:04:55,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:55,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:55,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:55,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:04:55,945 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:04:55,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:55,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1900895862, now seen corresponding path program 2 times [2023-11-06 23:04:55,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:55,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157706183] [2023-11-06 23:04:55,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:55,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:56,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:56,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157706183] [2023-11-06 23:04:56,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157706183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:56,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:56,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:04:56,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854047922] [2023-11-06 23:04:56,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:56,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:04:56,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:04:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:04:56,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 329 [2023-11-06 23:04:56,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 55 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:56,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:56,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 329 [2023-11-06 23:04:56,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:56,573 INFO L124 PetriNetUnfolderBase]: 442/807 cut-off events. [2023-11-06 23:04:56,573 INFO L125 PetriNetUnfolderBase]: For 1135/1135 co-relation queries the response was YES. [2023-11-06 23:04:56,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2753 conditions, 807 events. 442/807 cut-off events. For 1135/1135 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3388 event pairs, 67 based on Foata normal form. 35/801 useless extension candidates. Maximal degree in co-relation 2732. Up to 515 conditions per place. [2023-11-06 23:04:56,582 INFO L140 encePairwiseOnDemand]: 320/329 looper letters, 75 selfloop transitions, 23 changer transitions 1/100 dead transitions. [2023-11-06 23:04:56,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 100 transitions, 731 flow [2023-11-06 23:04:56,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:04:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:04:56,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 743 transitions. [2023-11-06 23:04:56,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45167173252279635 [2023-11-06 23:04:56,589 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 743 transitions. [2023-11-06 23:04:56,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 743 transitions. [2023-11-06 23:04:56,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:56,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 743 transitions. [2023-11-06 23:04:56,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:56,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:56,596 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:56,596 INFO L175 Difference]: Start difference. First operand has 48 places, 55 transitions, 317 flow. Second operand 5 states and 743 transitions. [2023-11-06 23:04:56,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 100 transitions, 731 flow [2023-11-06 23:04:56,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 100 transitions, 727 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-06 23:04:56,604 INFO L231 Difference]: Finished difference. Result has 56 places, 67 transitions, 498 flow [2023-11-06 23:04:56,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=56, PETRI_TRANSITIONS=67} [2023-11-06 23:04:56,605 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2023-11-06 23:04:56,605 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 67 transitions, 498 flow [2023-11-06 23:04:56,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:56,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:56,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:56,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:04:56,607 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:04:56,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:56,608 INFO L85 PathProgramCache]: Analyzing trace with hash 652510127, now seen corresponding path program 1 times [2023-11-06 23:04:56,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:56,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155347004] [2023-11-06 23:04:56,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:56,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:56,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:56,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155347004] [2023-11-06 23:04:56,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155347004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:56,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:56,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:04:56,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563261957] [2023-11-06 23:04:56,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:56,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:04:56,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:56,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:04:56,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:04:56,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 329 [2023-11-06 23:04:56,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 67 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:56,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:56,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 329 [2023-11-06 23:04:56,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:57,007 INFO L124 PetriNetUnfolderBase]: 495/922 cut-off events. [2023-11-06 23:04:57,007 INFO L125 PetriNetUnfolderBase]: For 2464/2464 co-relation queries the response was YES. [2023-11-06 23:04:57,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3629 conditions, 922 events. 495/922 cut-off events. For 2464/2464 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3961 event pairs, 82 based on Foata normal form. 60/923 useless extension candidates. Maximal degree in co-relation 3604. Up to 621 conditions per place. [2023-11-06 23:04:57,019 INFO L140 encePairwiseOnDemand]: 322/329 looper letters, 83 selfloop transitions, 10 changer transitions 0/94 dead transitions. [2023-11-06 23:04:57,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 94 transitions, 861 flow [2023-11-06 23:04:57,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:04:57,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:04:57,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-11-06 23:04:57,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47922998986828774 [2023-11-06 23:04:57,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-11-06 23:04:57,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-11-06 23:04:57,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:57,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-11-06 23:04:57,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:57,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:57,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:57,029 INFO L175 Difference]: Start difference. First operand has 56 places, 67 transitions, 498 flow. Second operand 3 states and 473 transitions. [2023-11-06 23:04:57,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 94 transitions, 861 flow [2023-11-06 23:04:57,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 94 transitions, 861 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:04:57,041 INFO L231 Difference]: Finished difference. Result has 60 places, 75 transitions, 622 flow [2023-11-06 23:04:57,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=622, PETRI_PLACES=60, PETRI_TRANSITIONS=75} [2023-11-06 23:04:57,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2023-11-06 23:04:57,042 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 75 transitions, 622 flow [2023-11-06 23:04:57,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:57,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:57,043 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:57,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:04:57,043 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:04:57,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:57,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1108704868, now seen corresponding path program 1 times [2023-11-06 23:04:57,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:57,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457308381] [2023-11-06 23:04:57,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:57,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:57,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:57,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457308381] [2023-11-06 23:04:57,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457308381] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:04:57,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836902301] [2023-11-06 23:04:57,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:57,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:04:57,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:04:57,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:04:57,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:04:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:57,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:04:57,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:04:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:57,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:04:57,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:57,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836902301] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:04:57,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:04:57,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 23:04:57,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901244676] [2023-11-06 23:04:57,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:04:57,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:04:57,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:57,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:04:57,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:04:57,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 329 [2023-11-06 23:04:57,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 75 transitions, 622 flow. Second operand has 7 states, 7 states have (on average 148.42857142857142) internal successors, (1039), 7 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:57,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:57,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 329 [2023-11-06 23:04:57,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:58,052 INFO L124 PetriNetUnfolderBase]: 1585/2787 cut-off events. [2023-11-06 23:04:58,052 INFO L125 PetriNetUnfolderBase]: For 9852/9852 co-relation queries the response was YES. [2023-11-06 23:04:58,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11942 conditions, 2787 events. 1585/2787 cut-off events. For 9852/9852 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 13911 event pairs, 256 based on Foata normal form. 0/2642 useless extension candidates. Maximal degree in co-relation 11915. Up to 843 conditions per place. [2023-11-06 23:04:58,145 INFO L140 encePairwiseOnDemand]: 324/329 looper letters, 287 selfloop transitions, 12 changer transitions 0/300 dead transitions. [2023-11-06 23:04:58,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 300 transitions, 3066 flow [2023-11-06 23:04:58,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:04:58,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:04:58,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1140 transitions. [2023-11-06 23:04:58,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4950065132435953 [2023-11-06 23:04:58,151 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1140 transitions. [2023-11-06 23:04:58,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1140 transitions. [2023-11-06 23:04:58,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:58,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1140 transitions. [2023-11-06 23:04:58,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.85714285714286) internal successors, (1140), 7 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:58,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:58,162 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:58,163 INFO L175 Difference]: Start difference. First operand has 60 places, 75 transitions, 622 flow. Second operand 7 states and 1140 transitions. [2023-11-06 23:04:58,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 300 transitions, 3066 flow [2023-11-06 23:04:58,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 300 transitions, 2946 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-06 23:04:58,195 INFO L231 Difference]: Finished difference. Result has 67 places, 84 transitions, 678 flow [2023-11-06 23:04:58,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=678, PETRI_PLACES=67, PETRI_TRANSITIONS=84} [2023-11-06 23:04:58,197 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2023-11-06 23:04:58,197 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 84 transitions, 678 flow [2023-11-06 23:04:58,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.42857142857142) internal successors, (1039), 7 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:58,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:58,198 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:58,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:04:58,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:04:58,404 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:04:58,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:58,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1108704851, now seen corresponding path program 1 times [2023-11-06 23:04:58,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:58,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590323131] [2023-11-06 23:04:58,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:58,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:58,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:58,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590323131] [2023-11-06 23:04:58,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590323131] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:04:58,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457517552] [2023-11-06 23:04:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:58,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:04:58,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:04:58,463 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:04:58,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:04:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:58,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:04:58,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:04:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:58,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:04:58,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457517552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:58,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:04:58,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 23:04:58,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072416081] [2023-11-06 23:04:58,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:58,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:04:58,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:58,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:04:58,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:04:58,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 329 [2023-11-06 23:04:58,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 84 transitions, 678 flow. Second operand has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:58,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:58,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 329 [2023-11-06 23:04:58,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:59,327 INFO L124 PetriNetUnfolderBase]: 1465/2638 cut-off events. [2023-11-06 23:04:59,328 INFO L125 PetriNetUnfolderBase]: For 8770/8770 co-relation queries the response was YES. [2023-11-06 23:04:59,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11546 conditions, 2638 events. 1465/2638 cut-off events. For 8770/8770 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13487 event pairs, 319 based on Foata normal form. 58/2696 useless extension candidates. Maximal degree in co-relation 11516. Up to 2389 conditions per place. [2023-11-06 23:04:59,362 INFO L140 encePairwiseOnDemand]: 325/329 looper letters, 119 selfloop transitions, 6 changer transitions 0/126 dead transitions. [2023-11-06 23:04:59,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 126 transitions, 1236 flow [2023-11-06 23:04:59,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:04:59,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:04:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 633 transitions. [2023-11-06 23:04:59,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810030395136778 [2023-11-06 23:04:59,365 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 633 transitions. [2023-11-06 23:04:59,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 633 transitions. [2023-11-06 23:04:59,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:59,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 633 transitions. [2023-11-06 23:04:59,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:59,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 329.0) internal successors, (1645), 5 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:59,373 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 329.0) internal successors, (1645), 5 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:59,373 INFO L175 Difference]: Start difference. First operand has 67 places, 84 transitions, 678 flow. Second operand 4 states and 633 transitions. [2023-11-06 23:04:59,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 126 transitions, 1236 flow [2023-11-06 23:04:59,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 126 transitions, 1222 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 23:04:59,409 INFO L231 Difference]: Finished difference. Result has 67 places, 80 transitions, 649 flow [2023-11-06 23:04:59,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=649, PETRI_PLACES=67, PETRI_TRANSITIONS=80} [2023-11-06 23:04:59,411 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2023-11-06 23:04:59,411 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 80 transitions, 649 flow [2023-11-06 23:04:59,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:59,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:59,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:59,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:04:59,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:04:59,618 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:04:59,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:59,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1967237478, now seen corresponding path program 1 times [2023-11-06 23:04:59,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:59,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769946331] [2023-11-06 23:04:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:59,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:59,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:59,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769946331] [2023-11-06 23:04:59,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769946331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:59,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:59,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:04:59,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988350898] [2023-11-06 23:04:59,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:59,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:04:59,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:59,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:04:59,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:05:00,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 329 [2023-11-06 23:05:00,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 80 transitions, 649 flow. Second operand has 8 states, 8 states have (on average 139.625) internal successors, (1117), 8 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:00,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:00,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 329 [2023-11-06 23:05:00,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:00,697 INFO L124 PetriNetUnfolderBase]: 1373/2442 cut-off events. [2023-11-06 23:05:00,698 INFO L125 PetriNetUnfolderBase]: For 8330/8330 co-relation queries the response was YES. [2023-11-06 23:05:00,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10594 conditions, 2442 events. 1373/2442 cut-off events. For 8330/8330 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 11915 event pairs, 234 based on Foata normal form. 71/2513 useless extension candidates. Maximal degree in co-relation 10563. Up to 1405 conditions per place. [2023-11-06 23:05:00,742 INFO L140 encePairwiseOnDemand]: 321/329 looper letters, 82 selfloop transitions, 29 changer transitions 5/117 dead transitions. [2023-11-06 23:05:00,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 117 transitions, 1139 flow [2023-11-06 23:05:00,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:05:00,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:05:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 880 transitions. [2023-11-06 23:05:00,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4457953394123607 [2023-11-06 23:05:00,746 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 880 transitions. [2023-11-06 23:05:00,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 880 transitions. [2023-11-06 23:05:00,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:00,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 880 transitions. [2023-11-06 23:05:00,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:00,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 329.0) internal successors, (2303), 7 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:00,756 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 329.0) internal successors, (2303), 7 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:00,756 INFO L175 Difference]: Start difference. First operand has 67 places, 80 transitions, 649 flow. Second operand 6 states and 880 transitions. [2023-11-06 23:05:00,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 117 transitions, 1139 flow [2023-11-06 23:05:00,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 117 transitions, 1102 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:05:00,774 INFO L231 Difference]: Finished difference. Result has 68 places, 82 transitions, 695 flow [2023-11-06 23:05:00,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=695, PETRI_PLACES=68, PETRI_TRANSITIONS=82} [2023-11-06 23:05:00,776 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2023-11-06 23:05:00,776 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 82 transitions, 695 flow [2023-11-06 23:05:00,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.625) internal successors, (1117), 8 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:00,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:00,777 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:00,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:05:00,777 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:05:00,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:00,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1256383553, now seen corresponding path program 1 times [2023-11-06 23:05:00,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:00,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203471675] [2023-11-06 23:05:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:00,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:01,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:01,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203471675] [2023-11-06 23:05:01,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203471675] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:01,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949286509] [2023-11-06 23:05:01,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:01,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:01,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:01,428 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:01,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:05:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:01,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-06 23:05:01,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:01,707 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 23:05:01,925 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-06 23:05:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:01,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:02,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949286509] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:02,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:05:02,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 7] total 22 [2023-11-06 23:05:02,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911947389] [2023-11-06 23:05:02,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:02,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:05:02,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:02,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:05:02,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-11-06 23:05:02,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 329 [2023-11-06 23:05:02,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 82 transitions, 695 flow. Second operand has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:02,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:02,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 329 [2023-11-06 23:05:02,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:03,652 INFO L124 PetriNetUnfolderBase]: 1885/3361 cut-off events. [2023-11-06 23:05:03,652 INFO L125 PetriNetUnfolderBase]: For 13102/13102 co-relation queries the response was YES. [2023-11-06 23:05:03,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15199 conditions, 3361 events. 1885/3361 cut-off events. For 13102/13102 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 18290 event pairs, 246 based on Foata normal form. 44/3404 useless extension candidates. Maximal degree in co-relation 15168. Up to 1672 conditions per place. [2023-11-06 23:05:03,683 INFO L140 encePairwiseOnDemand]: 319/329 looper letters, 108 selfloop transitions, 46 changer transitions 3/158 dead transitions. [2023-11-06 23:05:03,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 158 transitions, 1581 flow [2023-11-06 23:05:03,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:03,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:05:03,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 740 transitions. [2023-11-06 23:05:03,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44984802431610943 [2023-11-06 23:05:03,689 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 740 transitions. [2023-11-06 23:05:03,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 740 transitions. [2023-11-06 23:05:03,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:03,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 740 transitions. [2023-11-06 23:05:03,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:03,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:03,697 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:03,697 INFO L175 Difference]: Start difference. First operand has 68 places, 82 transitions, 695 flow. Second operand 5 states and 740 transitions. [2023-11-06 23:05:03,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 158 transitions, 1581 flow [2023-11-06 23:05:03,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 158 transitions, 1550 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-06 23:05:03,725 INFO L231 Difference]: Finished difference. Result has 74 places, 116 transitions, 1178 flow [2023-11-06 23:05:03,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1178, PETRI_PLACES=74, PETRI_TRANSITIONS=116} [2023-11-06 23:05:03,728 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2023-11-06 23:05:03,728 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 116 transitions, 1178 flow [2023-11-06 23:05:03,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:03,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:03,729 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:03,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:03,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:03,936 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:05:03,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:03,936 INFO L85 PathProgramCache]: Analyzing trace with hash -418852081, now seen corresponding path program 2 times [2023-11-06 23:05:03,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:03,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077324954] [2023-11-06 23:05:03,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:03,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:04,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:04,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077324954] [2023-11-06 23:05:04,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077324954] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:04,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832489739] [2023-11-06 23:05:04,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:05:04,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:04,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:04,395 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:04,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:05:04,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:05:04,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:05:04,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 23:05:04,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:04,604 INFO L322 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2023-11-06 23:05:04,605 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 40 [2023-11-06 23:05:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:05:04,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:04,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832489739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:04,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:05:04,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2023-11-06 23:05:04,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588133821] [2023-11-06 23:05:04,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:04,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:04,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:04,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:05:04,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 329 [2023-11-06 23:05:04,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 116 transitions, 1178 flow. Second operand has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:04,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:04,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 329 [2023-11-06 23:05:04,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:05,767 INFO L124 PetriNetUnfolderBase]: 2027/3706 cut-off events. [2023-11-06 23:05:05,767 INFO L125 PetriNetUnfolderBase]: For 21325/21325 co-relation queries the response was YES. [2023-11-06 23:05:05,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18771 conditions, 3706 events. 2027/3706 cut-off events. For 21325/21325 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 20768 event pairs, 332 based on Foata normal form. 138/3843 useless extension candidates. Maximal degree in co-relation 18738. Up to 1713 conditions per place. [2023-11-06 23:05:05,812 INFO L140 encePairwiseOnDemand]: 321/329 looper letters, 113 selfloop transitions, 59 changer transitions 3/176 dead transitions. [2023-11-06 23:05:05,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 176 transitions, 2051 flow [2023-11-06 23:05:05,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:05:05,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 748 transitions. [2023-11-06 23:05:05,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547112462006079 [2023-11-06 23:05:05,816 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 748 transitions. [2023-11-06 23:05:05,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 748 transitions. [2023-11-06 23:05:05,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:05,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 748 transitions. [2023-11-06 23:05:05,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:05,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:05,824 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:05,825 INFO L175 Difference]: Start difference. First operand has 74 places, 116 transitions, 1178 flow. Second operand 5 states and 748 transitions. [2023-11-06 23:05:05,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 176 transitions, 2051 flow [2023-11-06 23:05:05,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 176 transitions, 2031 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-11-06 23:05:05,877 INFO L231 Difference]: Finished difference. Result has 82 places, 134 transitions, 1624 flow [2023-11-06 23:05:05,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1624, PETRI_PLACES=82, PETRI_TRANSITIONS=134} [2023-11-06 23:05:05,878 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2023-11-06 23:05:05,879 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 134 transitions, 1624 flow [2023-11-06 23:05:05,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:05,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:05,880 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:05,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:06,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:06,086 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:05:06,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:06,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1198995578, now seen corresponding path program 1 times [2023-11-06 23:05:06,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:06,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854973475] [2023-11-06 23:05:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:06,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:06,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:06,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854973475] [2023-11-06 23:05:06,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854973475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:06,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:06,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:05:06,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343177013] [2023-11-06 23:05:06,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:06,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:05:06,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:06,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:05:06,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:05:06,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 329 [2023-11-06 23:05:06,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 134 transitions, 1624 flow. Second operand has 7 states, 7 states have (on average 137.57142857142858) internal successors, (963), 7 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:06,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:06,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 329 [2023-11-06 23:05:06,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:08,064 INFO L124 PetriNetUnfolderBase]: 2508/4658 cut-off events. [2023-11-06 23:05:08,065 INFO L125 PetriNetUnfolderBase]: For 38144/38144 co-relation queries the response was YES. [2023-11-06 23:05:08,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26697 conditions, 4658 events. 2508/4658 cut-off events. For 38144/38144 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 27565 event pairs, 314 based on Foata normal form. 89/4746 useless extension candidates. Maximal degree in co-relation 26660. Up to 2451 conditions per place. [2023-11-06 23:05:08,119 INFO L140 encePairwiseOnDemand]: 313/329 looper letters, 160 selfloop transitions, 124 changer transitions 3/288 dead transitions. [2023-11-06 23:05:08,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 288 transitions, 3994 flow [2023-11-06 23:05:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:05:08,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 23:05:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1598 transitions. [2023-11-06 23:05:08,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2023-11-06 23:05:08,136 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1598 transitions. [2023-11-06 23:05:08,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1598 transitions. [2023-11-06 23:05:08,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:08,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1598 transitions. [2023-11-06 23:05:08,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 145.27272727272728) internal successors, (1598), 11 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:08,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 329.0) internal successors, (3948), 12 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:08,180 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 329.0) internal successors, (3948), 12 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:08,180 INFO L175 Difference]: Start difference. First operand has 82 places, 134 transitions, 1624 flow. Second operand 11 states and 1598 transitions. [2023-11-06 23:05:08,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 288 transitions, 3994 flow [2023-11-06 23:05:08,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 288 transitions, 3974 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-11-06 23:05:08,282 INFO L231 Difference]: Finished difference. Result has 99 places, 217 transitions, 3272 flow [2023-11-06 23:05:08,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3272, PETRI_PLACES=99, PETRI_TRANSITIONS=217} [2023-11-06 23:05:08,284 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2023-11-06 23:05:08,284 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 217 transitions, 3272 flow [2023-11-06 23:05:08,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 137.57142857142858) internal successors, (963), 7 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:08,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:08,285 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:08,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 23:05:08,286 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:05:08,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:08,286 INFO L85 PathProgramCache]: Analyzing trace with hash -729613198, now seen corresponding path program 2 times [2023-11-06 23:05:08,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:08,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735651267] [2023-11-06 23:05:08,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:08,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:08,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:08,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735651267] [2023-11-06 23:05:08,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735651267] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:08,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938053439] [2023-11-06 23:05:08,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:05:08,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:08,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:08,628 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:08,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:05:08,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:05:08,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:05:08,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 23:05:08,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:08,817 INFO L322 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2023-11-06 23:05:08,818 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 40 [2023-11-06 23:05:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:05:08,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:08,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938053439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:08,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:05:08,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-06 23:05:08,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263316227] [2023-11-06 23:05:08,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:08,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:08,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:08,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:08,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:05:08,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 329 [2023-11-06 23:05:08,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 217 transitions, 3272 flow. Second operand has 5 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:08,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:08,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 329 [2023-11-06 23:05:08,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:10,471 INFO L124 PetriNetUnfolderBase]: 2778/5159 cut-off events. [2023-11-06 23:05:10,471 INFO L125 PetriNetUnfolderBase]: For 60962/60962 co-relation queries the response was YES. [2023-11-06 23:05:10,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35624 conditions, 5159 events. 2778/5159 cut-off events. For 60962/60962 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 31338 event pairs, 383 based on Foata normal form. 44/5202 useless extension candidates. Maximal degree in co-relation 35579. Up to 3323 conditions per place. [2023-11-06 23:05:10,554 INFO L140 encePairwiseOnDemand]: 323/329 looper letters, 176 selfloop transitions, 139 changer transitions 0/316 dead transitions. [2023-11-06 23:05:10,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 316 transitions, 5295 flow [2023-11-06 23:05:10,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:10,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:05:10,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2023-11-06 23:05:10,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.451063829787234 [2023-11-06 23:05:10,559 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2023-11-06 23:05:10,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2023-11-06 23:05:10,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:10,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2023-11-06 23:05:10,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:10,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:10,569 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:10,569 INFO L175 Difference]: Start difference. First operand has 99 places, 217 transitions, 3272 flow. Second operand 5 states and 742 transitions. [2023-11-06 23:05:10,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 316 transitions, 5295 flow [2023-11-06 23:05:10,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 316 transitions, 5113 flow, removed 91 selfloop flow, removed 0 redundant places. [2023-11-06 23:05:10,807 INFO L231 Difference]: Finished difference. Result has 106 places, 267 transitions, 4448 flow [2023-11-06 23:05:10,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=3114, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4448, PETRI_PLACES=106, PETRI_TRANSITIONS=267} [2023-11-06 23:05:10,809 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2023-11-06 23:05:10,809 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 267 transitions, 4448 flow [2023-11-06 23:05:10,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:10,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:10,810 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:10,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:11,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:11,017 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:05:11,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:11,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2133814134, now seen corresponding path program 3 times [2023-11-06 23:05:11,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:11,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852015136] [2023-11-06 23:05:11,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:11,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:11,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:11,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:11,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852015136] [2023-11-06 23:05:11,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852015136] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:11,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480038022] [2023-11-06 23:05:11,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 23:05:11,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:11,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:11,909 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:11,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:05:12,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 23:05:12,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:05:12,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 23:05:12,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:12,138 INFO L322 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2023-11-06 23:05:12,138 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 34 [2023-11-06 23:05:12,283 INFO L322 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2023-11-06 23:05:12,283 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 40 [2023-11-06 23:05:12,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:05:12,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:12,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480038022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:12,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:05:12,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-11-06 23:05:12,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266637192] [2023-11-06 23:05:12,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:12,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:05:12,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:12,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:05:12,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:05:12,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 329 [2023-11-06 23:05:12,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 267 transitions, 4448 flow. Second operand has 6 states, 6 states have (on average 138.83333333333334) internal successors, (833), 6 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:12,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:12,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 329 [2023-11-06 23:05:12,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:13,710 INFO L124 PetriNetUnfolderBase]: 2753/5073 cut-off events. [2023-11-06 23:05:13,710 INFO L125 PetriNetUnfolderBase]: For 66222/66222 co-relation queries the response was YES. [2023-11-06 23:05:13,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37219 conditions, 5073 events. 2753/5073 cut-off events. For 66222/66222 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 30476 event pairs, 365 based on Foata normal form. 33/5105 useless extension candidates. Maximal degree in co-relation 37170. Up to 2808 conditions per place. [2023-11-06 23:05:13,765 INFO L140 encePairwiseOnDemand]: 323/329 looper letters, 147 selfloop transitions, 176 changer transitions 0/324 dead transitions. [2023-11-06 23:05:13,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 324 transitions, 5803 flow [2023-11-06 23:05:13,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:05:13,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:05:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 862 transitions. [2023-11-06 23:05:13,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43667679837892603 [2023-11-06 23:05:13,769 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 862 transitions. [2023-11-06 23:05:13,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 862 transitions. [2023-11-06 23:05:13,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:13,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 862 transitions. [2023-11-06 23:05:13,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:13,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 329.0) internal successors, (2303), 7 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:13,779 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 329.0) internal successors, (2303), 7 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:13,779 INFO L175 Difference]: Start difference. First operand has 106 places, 267 transitions, 4448 flow. Second operand 6 states and 862 transitions. [2023-11-06 23:05:13,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 324 transitions, 5803 flow [2023-11-06 23:05:13,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 324 transitions, 5697 flow, removed 22 selfloop flow, removed 1 redundant places. [2023-11-06 23:05:13,991 INFO L231 Difference]: Finished difference. Result has 109 places, 278 transitions, 4915 flow [2023-11-06 23:05:13,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=4296, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4915, PETRI_PLACES=109, PETRI_TRANSITIONS=278} [2023-11-06 23:05:13,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2023-11-06 23:05:13,992 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 278 transitions, 4915 flow [2023-11-06 23:05:13,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.83333333333334) internal successors, (833), 6 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:13,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:13,993 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:14,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:14,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:14,209 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:05:14,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:14,210 INFO L85 PathProgramCache]: Analyzing trace with hash 504909549, now seen corresponding path program 2 times [2023-11-06 23:05:14,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:14,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638720848] [2023-11-06 23:05:14,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:14,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:14,330 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:14,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:14,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638720848] [2023-11-06 23:05:14,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638720848] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:14,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315596428] [2023-11-06 23:05:14,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:05:14,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:14,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:14,333 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:14,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:05:14,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:05:14,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:05:14,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:05:14,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:14,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:14,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315596428] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:14,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:14,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 23:05:14,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591033649] [2023-11-06 23:05:14,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:14,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:05:14,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:14,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:05:14,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:05:14,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 329 [2023-11-06 23:05:14,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 278 transitions, 4915 flow. Second operand has 13 states, 13 states have (on average 148.23076923076923) internal successors, (1927), 13 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:14,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:14,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 329 [2023-11-06 23:05:14,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:18,532 INFO L124 PetriNetUnfolderBase]: 7235/13173 cut-off events. [2023-11-06 23:05:18,533 INFO L125 PetriNetUnfolderBase]: For 188370/188370 co-relation queries the response was YES. [2023-11-06 23:05:18,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100128 conditions, 13173 events. 7235/13173 cut-off events. For 188370/188370 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 83937 event pairs, 801 based on Foata normal form. 306/13479 useless extension candidates. Maximal degree in co-relation 100079. Up to 2621 conditions per place. [2023-11-06 23:05:18,747 INFO L140 encePairwiseOnDemand]: 325/329 looper letters, 2511 selfloop transitions, 19 changer transitions 0/2531 dead transitions. [2023-11-06 23:05:18,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 2531 transitions, 50379 flow [2023-11-06 23:05:18,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:05:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:05:18,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1962 transitions. [2023-11-06 23:05:18,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4969604863221885 [2023-11-06 23:05:18,757 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1962 transitions. [2023-11-06 23:05:18,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1962 transitions. [2023-11-06 23:05:18,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:18,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1962 transitions. [2023-11-06 23:05:18,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 163.5) internal successors, (1962), 12 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:18,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 329.0) internal successors, (4277), 13 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:18,946 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 329.0) internal successors, (4277), 13 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:18,947 INFO L175 Difference]: Start difference. First operand has 109 places, 278 transitions, 4915 flow. Second operand 12 states and 1962 transitions. [2023-11-06 23:05:18,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 2531 transitions, 50379 flow [2023-11-06 23:05:19,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 2531 transitions, 50189 flow, removed 95 selfloop flow, removed 0 redundant places. [2023-11-06 23:05:19,700 INFO L231 Difference]: Finished difference. Result has 126 places, 290 transitions, 5045 flow [2023-11-06 23:05:19,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=4895, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5045, PETRI_PLACES=126, PETRI_TRANSITIONS=290} [2023-11-06 23:05:19,701 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2023-11-06 23:05:19,701 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 290 transitions, 5045 flow [2023-11-06 23:05:19,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 148.23076923076923) internal successors, (1927), 13 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:19,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:19,703 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:19,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:19,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 23:05:19,909 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:05:19,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:19,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2093052536, now seen corresponding path program 1 times [2023-11-06 23:05:19,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:19,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767426395] [2023-11-06 23:05:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:19,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:20,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:20,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767426395] [2023-11-06 23:05:20,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767426395] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:20,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550207220] [2023-11-06 23:05:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:20,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:20,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:20,327 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:20,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:05:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:20,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-06 23:05:20,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:20,579 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 23:05:20,897 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-06 23:05:21,087 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-06 23:05:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:21,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:05:21,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550207220] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:21,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:21,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 23 [2023-11-06 23:05:21,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549844899] [2023-11-06 23:05:21,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:21,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 23:05:21,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:21,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 23:05:21,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2023-11-06 23:05:24,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 329 [2023-11-06 23:05:24,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 290 transitions, 5045 flow. Second operand has 24 states, 24 states have (on average 130.70833333333334) internal successors, (3137), 24 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:24,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:24,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 329 [2023-11-06 23:05:24,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:35,378 INFO L124 PetriNetUnfolderBase]: 14254/25871 cut-off events. [2023-11-06 23:05:35,378 INFO L125 PetriNetUnfolderBase]: For 401177/401177 co-relation queries the response was YES. [2023-11-06 23:05:35,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199427 conditions, 25871 events. 14254/25871 cut-off events. For 401177/401177 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 184856 event pairs, 325 based on Foata normal form. 1071/26941 useless extension candidates. Maximal degree in co-relation 199371. Up to 5367 conditions per place. [2023-11-06 23:05:35,871 INFO L140 encePairwiseOnDemand]: 311/329 looper letters, 283 selfloop transitions, 667 changer transitions 99/1050 dead transitions. [2023-11-06 23:05:35,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 1050 transitions, 17961 flow [2023-11-06 23:05:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-06 23:05:35,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-11-06 23:05:35,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 6203 transitions. [2023-11-06 23:05:35,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40987181181445753 [2023-11-06 23:05:35,895 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 6203 transitions. [2023-11-06 23:05:35,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 6203 transitions. [2023-11-06 23:05:35,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:35,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 6203 transitions. [2023-11-06 23:05:35,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 134.84782608695653) internal successors, (6203), 46 states have internal predecessors, (6203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:35,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 329.0) internal successors, (15463), 47 states have internal predecessors, (15463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:35,943 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 329.0) internal successors, (15463), 47 states have internal predecessors, (15463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:35,943 INFO L175 Difference]: Start difference. First operand has 126 places, 290 transitions, 5045 flow. Second operand 46 states and 6203 transitions. [2023-11-06 23:05:35,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 1050 transitions, 17961 flow [2023-11-06 23:05:37,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 1050 transitions, 16989 flow, removed 299 selfloop flow, removed 7 redundant places. [2023-11-06 23:05:37,693 INFO L231 Difference]: Finished difference. Result has 179 places, 730 transitions, 14875 flow [2023-11-06 23:05:37,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=4682, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=14875, PETRI_PLACES=179, PETRI_TRANSITIONS=730} [2023-11-06 23:05:37,694 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2023-11-06 23:05:37,694 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 730 transitions, 14875 flow [2023-11-06 23:05:37,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 130.70833333333334) internal successors, (3137), 24 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:37,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:37,695 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:37,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:37,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 23:05:37,896 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:05:37,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:37,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1829920897, now seen corresponding path program 3 times [2023-11-06 23:05:37,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:37,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035332965] [2023-11-06 23:05:37,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:37,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:38,370 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:38,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:38,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035332965] [2023-11-06 23:05:38,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035332965] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:38,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119728984] [2023-11-06 23:05:38,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 23:05:38,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:38,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:38,374 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:38,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 23:05:38,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 23:05:38,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:05:38,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-06 23:05:38,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:38,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-06 23:05:38,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:38,610 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 23:05:38,757 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-06 23:05:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-06 23:05:39,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-06 23:05:39,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119728984] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:39,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:39,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 23 [2023-11-06 23:05:39,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672016919] [2023-11-06 23:05:39,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:39,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 23:05:39,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:39,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 23:05:39,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2023-11-06 23:05:40,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 329 [2023-11-06 23:05:40,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 730 transitions, 14875 flow. Second operand has 23 states, 23 states have (on average 135.43478260869566) internal successors, (3115), 23 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:40,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:40,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 329 [2023-11-06 23:05:40,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:55,433 INFO L124 PetriNetUnfolderBase]: 14896/28047 cut-off events. [2023-11-06 23:05:55,433 INFO L125 PetriNetUnfolderBase]: For 595096/595096 co-relation queries the response was YES. [2023-11-06 23:05:55,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254662 conditions, 28047 events. 14896/28047 cut-off events. For 595096/595096 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 210563 event pairs, 449 based on Foata normal form. 219/28266 useless extension candidates. Maximal degree in co-relation 254589. Up to 6134 conditions per place. [2023-11-06 23:05:55,849 INFO L140 encePairwiseOnDemand]: 318/329 looper letters, 6135 selfloop transitions, 2356 changer transitions 0/8492 dead transitions. [2023-11-06 23:05:55,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 8492 transitions, 187171 flow [2023-11-06 23:05:55,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-06 23:05:55,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-11-06 23:05:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 5492 transitions. [2023-11-06 23:05:55,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43928971364581665 [2023-11-06 23:05:55,860 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 5492 transitions. [2023-11-06 23:05:55,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 5492 transitions. [2023-11-06 23:05:55,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:55,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 5492 transitions. [2023-11-06 23:05:55,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 144.52631578947367) internal successors, (5492), 38 states have internal predecessors, (5492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:55,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 329.0) internal successors, (12831), 39 states have internal predecessors, (12831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:55,897 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 329.0) internal successors, (12831), 39 states have internal predecessors, (12831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:55,898 INFO L175 Difference]: Start difference. First operand has 179 places, 730 transitions, 14875 flow. Second operand 38 states and 5492 transitions. [2023-11-06 23:05:55,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 8492 transitions, 187171 flow [2023-11-06 23:06:04,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 8492 transitions, 174255 flow, removed 4779 selfloop flow, removed 5 redundant places. [2023-11-06 23:06:04,739 INFO L231 Difference]: Finished difference. Result has 221 places, 2877 transitions, 70681 flow [2023-11-06 23:06:04,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=13773, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=70681, PETRI_PLACES=221, PETRI_TRANSITIONS=2877} [2023-11-06 23:06:04,741 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2023-11-06 23:06:04,741 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 2877 transitions, 70681 flow [2023-11-06 23:06:04,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 135.43478260869566) internal successors, (3115), 23 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:04,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:06:04,743 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1] [2023-11-06 23:06:04,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:04,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:04,949 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:06:04,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:04,950 INFO L85 PathProgramCache]: Analyzing trace with hash 601301380, now seen corresponding path program 4 times [2023-11-06 23:06:04,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:04,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289664154] [2023-11-06 23:06:04,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:04,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:05,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:05,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289664154] [2023-11-06 23:06:05,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289664154] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:06:05,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615194247] [2023-11-06 23:06:05,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 23:06:05,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:05,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:05,353 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:05,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 23:06:05,626 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 23:06:05,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:06:05,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 23:06:05,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:05,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:06:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:06,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615194247] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:06:06,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:06:06,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2023-11-06 23:06:06,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313985006] [2023-11-06 23:06:06,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:06:06,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 23:06:06,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:06,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 23:06:06,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-11-06 23:06:06,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 329 [2023-11-06 23:06:06,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 2877 transitions, 70681 flow. Second operand has 27 states, 27 states have (on average 148.40740740740742) internal successors, (4007), 27 states have internal predecessors, (4007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:06,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:06:06,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 329 [2023-11-06 23:06:06,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:19,577 INFO L124 PetriNetUnfolderBase]: 32758/61548 cut-off events. [2023-11-06 23:07:19,577 INFO L125 PetriNetUnfolderBase]: For 1320023/1320023 co-relation queries the response was YES. [2023-11-06 23:07:20,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543915 conditions, 61548 events. 32758/61548 cut-off events. For 1320023/1320023 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 471846 event pairs, 1589 based on Foata normal form. 1807/63355 useless extension candidates. Maximal degree in co-relation 543831. Up to 10720 conditions per place. [2023-11-06 23:07:20,669 INFO L140 encePairwiseOnDemand]: 326/329 looper letters, 16865 selfloop transitions, 27 changer transitions 0/16893 dead transitions. [2023-11-06 23:07:20,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 16893 transitions, 373712 flow [2023-11-06 23:07:20,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 23:07:20,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-06 23:07:20,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4232 transitions. [2023-11-06 23:07:20,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473930324994153 [2023-11-06 23:07:20,678 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4232 transitions. [2023-11-06 23:07:20,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4232 transitions. [2023-11-06 23:07:20,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:20,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4232 transitions. [2023-11-06 23:07:20,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 162.76923076923077) internal successors, (4232), 26 states have internal predecessors, (4232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:20,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 329.0) internal successors, (8883), 27 states have internal predecessors, (8883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:20,702 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 329.0) internal successors, (8883), 27 states have internal predecessors, (8883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:20,702 INFO L175 Difference]: Start difference. First operand has 221 places, 2877 transitions, 70681 flow. Second operand 26 states and 4232 transitions. [2023-11-06 23:07:20,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 16893 transitions, 373712 flow [2023-11-06 23:08:21,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 16893 transitions, 373161 flow, removed 255 selfloop flow, removed 13 redundant places. [2023-11-06 23:08:21,632 INFO L231 Difference]: Finished difference. Result has 246 places, 2890 transitions, 70708 flow [2023-11-06 23:08:21,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=70496, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2877, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2862, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=70708, PETRI_PLACES=246, PETRI_TRANSITIONS=2890} [2023-11-06 23:08:21,636 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2023-11-06 23:08:21,636 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 2890 transitions, 70708 flow [2023-11-06 23:08:21,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 148.40740740740742) internal successors, (4007), 27 states have internal predecessors, (4007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:21,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:21,637 INFO L208 CegarLoopForPetriNet]: trace histogram [25, 24, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1] [2023-11-06 23:08:21,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:21,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:21,845 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 23:08:21,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:21,845 INFO L85 PathProgramCache]: Analyzing trace with hash -281870421, now seen corresponding path program 5 times [2023-11-06 23:08:21,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:21,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313294562] [2023-11-06 23:08:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:21,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:22,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:22,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:22,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313294562] [2023-11-06 23:08:22,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313294562] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:22,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669300919] [2023-11-06 23:08:22,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 23:08:22,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:22,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:22,941 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:22,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2ff64f-26a5-4eb2-a8f1-5f600b218f03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 23:08:23,745 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-06 23:08:23,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:08:23,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-06 23:08:23,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:23,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:08:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:24,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669300919] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:08:24,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:08:24,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 52 [2023-11-06 23:08:24,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011752253] [2023-11-06 23:08:24,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:08:24,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-06 23:08:24,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:24,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-06 23:08:24,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2023-11-06 23:08:25,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 329 [2023-11-06 23:08:25,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 2890 transitions, 70708 flow. Second operand has 53 states, 53 states have (on average 148.20754716981133) internal successors, (7855), 53 states have internal predecessors, (7855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:25,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:25,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 329 [2023-11-06 23:08:25,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand