./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-10.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_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/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_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/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_463a00bc-07b8-4131-ae64-6e17d26db2f7/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 4d0c5b9355e30d5caa4f24695b56ab4fa8d9d282078ca8b4e24a8f9b8920e450 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:42:20,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:42:20,293 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:42:20,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:42:20,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:42:20,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:42:20,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:42:20,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:42:20,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:42:20,347 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:42:20,348 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:42:20,348 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:42:20,349 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:42:20,352 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:42:20,352 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:42:20,353 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:42:20,353 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:42:20,354 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:42:20,354 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:42:20,354 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:42:20,355 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:42:20,356 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:42:20,356 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:42:20,356 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:42:20,357 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:42:20,357 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:42:20,358 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:42:20,359 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:42:20,359 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:42:20,360 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:42:20,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:42:20,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:42:20,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:42:20,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:42:20,362 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:42:20,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:42:20,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:42:20,363 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:42:20,363 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:42:20,364 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:42:20,364 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:42:20,364 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_463a00bc-07b8-4131-ae64-6e17d26db2f7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d0c5b9355e30d5caa4f24695b56ab4fa8d9d282078ca8b4e24a8f9b8920e450 [2023-11-06 22:42:20,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:42:20,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:42:20,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:42:20,704 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:42:20,705 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:42:20,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/fib_safe-10.i [2023-11-06 22:42:23,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:42:24,154 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:42:24,163 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/sv-benchmarks/c/pthread/fib_safe-10.i [2023-11-06 22:42:24,186 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/data/a707a33e4/026c218ed2dc47eb899bcd626c9644ed/FLAG16a0faefb [2023-11-06 22:42:24,208 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/data/a707a33e4/026c218ed2dc47eb899bcd626c9644ed [2023-11-06 22:42:24,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:42:24,220 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:42:24,223 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:42:24,223 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:42:24,230 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:42:24,231 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:42:24" (1/1) ... [2023-11-06 22:42:24,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36416b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:24, skipping insertion in model container [2023-11-06 22:42:24,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:42:24" (1/1) ... [2023-11-06 22:42:24,302 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:42:24,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:42:24,715 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:42:24,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:42:24,826 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:42:24,826 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:42:24,834 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:42:24,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:24 WrapperNode [2023-11-06 22:42:24,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:42:24,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:42:24,837 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:42:24,837 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:42:24,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:24" (1/1) ... [2023-11-06 22:42:24,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:24" (1/1) ... [2023-11-06 22:42:24,938 INFO L138 Inliner]: procedures = 165, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 82 [2023-11-06 22:42:24,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:42:24,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:42:24,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:42:24,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:42:24,953 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:24" (1/1) ... [2023-11-06 22:42:24,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:24" (1/1) ... [2023-11-06 22:42:24,967 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:24" (1/1) ... [2023-11-06 22:42:24,967 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:24" (1/1) ... [2023-11-06 22:42:25,002 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:24" (1/1) ... [2023-11-06 22:42:25,006 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:24" (1/1) ... [2023-11-06 22:42:25,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:24" (1/1) ... [2023-11-06 22:42:25,025 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:24" (1/1) ... [2023-11-06 22:42:25,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:42:25,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:42:25,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:42:25,029 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:42:25,030 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:24" (1/1) ... [2023-11-06 22:42:25,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:42:25,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:25,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:42:25,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:42:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 22:42:25,113 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 22:42:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 22:42:25,113 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 22:42:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:42:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:42:25,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:42:25,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:42:25,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:42:25,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:42:25,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:42:25,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:42:25,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:42:25,118 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:42:25,310 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:42:25,312 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:42:25,574 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:42:25,598 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:42:25,598 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:42:25,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:42:25 BoogieIcfgContainer [2023-11-06 22:42:25,601 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:42:25,603 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:42:25,603 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:42:25,607 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:42:25,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:42:24" (1/3) ... [2023-11-06 22:42:25,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f5ca5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:42:25, skipping insertion in model container [2023-11-06 22:42:25,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:24" (2/3) ... [2023-11-06 22:42:25,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f5ca5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:42:25, skipping insertion in model container [2023-11-06 22:42:25,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:42:25" (3/3) ... [2023-11-06 22:42:25,610 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-10.i [2023-11-06 22:42:25,620 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:42:25,631 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:42:25,632 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-06 22:42:25,632 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:42:25,717 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:42:25,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 121 transitions, 250 flow [2023-11-06 22:42:25,818 INFO L124 PetriNetUnfolderBase]: 8/119 cut-off events. [2023-11-06 22:42:25,818 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:42:25,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 119 events. 8/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 167 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-06 22:42:25,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 121 transitions, 250 flow [2023-11-06 22:42:25,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 119 transitions, 244 flow [2023-11-06 22:42:25,837 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:42:25,848 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 119 transitions, 244 flow [2023-11-06 22:42:25,851 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 119 transitions, 244 flow [2023-11-06 22:42:25,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 119 transitions, 244 flow [2023-11-06 22:42:25,886 INFO L124 PetriNetUnfolderBase]: 8/119 cut-off events. [2023-11-06 22:42:25,886 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:42:25,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 119 events. 8/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 169 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-06 22:42:25,892 INFO L119 LiptonReduction]: Number of co-enabled transitions 4318 [2023-11-06 22:42:30,405 INFO L134 LiptonReduction]: Checked pairs total: 3692 [2023-11-06 22:42:30,405 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-11-06 22:42:30,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:42:30,433 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;@4021bcdd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:42:30,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-06 22:42:30,440 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:42:30,440 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2023-11-06 22:42:30,440 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:42:30,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:30,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:42:30,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:30,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:30,453 INFO L85 PathProgramCache]: Analyzing trace with hash 14534104, now seen corresponding path program 1 times [2023-11-06 22:42:30,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:30,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240361548] [2023-11-06 22:42:30,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:30,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:30,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:30,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240361548] [2023-11-06 22:42:30,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240361548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:30,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:30,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:42:30,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274122572] [2023-11-06 22:42:30,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:30,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:30,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:30,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:30,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:30,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 22:42:30,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:30,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:30,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 22:42:30,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:31,139 INFO L124 PetriNetUnfolderBase]: 583/864 cut-off events. [2023-11-06 22:42:31,140 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:42:31,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1750 conditions, 864 events. 583/864 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3606 event pairs, 104 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 1740. Up to 727 conditions per place. [2023-11-06 22:42:31,156 INFO L140 encePairwiseOnDemand]: 231/243 looper letters, 33 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-11-06 22:42:31,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 38 transitions, 161 flow [2023-11-06 22:42:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:42:31,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-11-06 22:42:31,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49794238683127573 [2023-11-06 22:42:31,182 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-11-06 22:42:31,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-11-06 22:42:31,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:31,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-11-06 22:42:31,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:31,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:31,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:31,204 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 56 flow. Second operand 3 states and 363 transitions. [2023-11-06 22:42:31,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 38 transitions, 161 flow [2023-11-06 22:42:31,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:42:31,210 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 87 flow [2023-11-06 22:42:31,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2023-11-06 22:42:31,219 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-06 22:42:31,220 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 87 flow [2023-11-06 22:42:31,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:31,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:31,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:42:31,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:42:31,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:31,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:31,222 INFO L85 PathProgramCache]: Analyzing trace with hash 450559263, now seen corresponding path program 1 times [2023-11-06 22:42:31,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:31,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52388227] [2023-11-06 22:42:31,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:31,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:31,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:31,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:31,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52388227] [2023-11-06 22:42:31,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52388227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:31,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:31,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:42:31,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874927979] [2023-11-06 22:42:31,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:31,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:31,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:31,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:31,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:31,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 22:42:31,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:31,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:31,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 22:42:31,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:31,491 INFO L124 PetriNetUnfolderBase]: 489/732 cut-off events. [2023-11-06 22:42:31,492 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-06 22:42:31,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1831 conditions, 732 events. 489/732 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2783 event pairs, 317 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 1820. Up to 732 conditions per place. [2023-11-06 22:42:31,499 INFO L140 encePairwiseOnDemand]: 241/243 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-06 22:42:31,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 24 transitions, 126 flow [2023-11-06 22:42:31,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:42:31,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2023-11-06 22:42:31,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46227709190672156 [2023-11-06 22:42:31,504 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2023-11-06 22:42:31,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2023-11-06 22:42:31,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:31,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2023-11-06 22:42:31,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:31,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:31,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:31,516 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 87 flow. Second operand 3 states and 337 transitions. [2023-11-06 22:42:31,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 24 transitions, 126 flow [2023-11-06 22:42:31,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:42:31,519 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 76 flow [2023-11-06 22:42:31,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2023-11-06 22:42:31,521 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-06 22:42:31,521 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 76 flow [2023-11-06 22:42:31,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:31,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:31,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:42:31,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:42:31,529 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:31,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:31,531 INFO L85 PathProgramCache]: Analyzing trace with hash 450559210, now seen corresponding path program 1 times [2023-11-06 22:42:31,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:31,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403851595] [2023-11-06 22:42:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:31,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:31,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:31,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403851595] [2023-11-06 22:42:31,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403851595] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:31,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685040769] [2023-11-06 22:42:31,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:31,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:31,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:31,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:31,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:42:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:31,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:42:31,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:31,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:31,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:31,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685040769] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:31,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:31,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-06 22:42:31,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224636141] [2023-11-06 22:42:31,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:31,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:42:31,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:31,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:42:31,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:42:31,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:42:31,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 76 flow. Second operand has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:31,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:31,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:42:31,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:32,355 INFO L124 PetriNetUnfolderBase]: 1089/1636 cut-off events. [2023-11-06 22:42:32,355 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-06 22:42:32,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3972 conditions, 1636 events. 1089/1636 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7614 event pairs, 92 based on Foata normal form. 0/892 useless extension candidates. Maximal degree in co-relation 3964. Up to 663 conditions per place. [2023-11-06 22:42:32,371 INFO L140 encePairwiseOnDemand]: 235/243 looper letters, 82 selfloop transitions, 20 changer transitions 0/102 dead transitions. [2023-11-06 22:42:32,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 102 transitions, 486 flow [2023-11-06 22:42:32,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:42:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:42:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 831 transitions. [2023-11-06 22:42:32,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48853615520282184 [2023-11-06 22:42:32,376 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 831 transitions. [2023-11-06 22:42:32,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 831 transitions. [2023-11-06 22:42:32,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:32,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 831 transitions. [2023-11-06 22:42:32,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:32,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 243.0) internal successors, (1944), 8 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:32,385 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 243.0) internal successors, (1944), 8 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:32,386 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 76 flow. Second operand 7 states and 831 transitions. [2023-11-06 22:42:32,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 102 transitions, 486 flow [2023-11-06 22:42:32,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 102 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:42:32,391 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 245 flow [2023-11-06 22:42:32,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2023-11-06 22:42:32,394 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2023-11-06 22:42:32,394 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 245 flow [2023-11-06 22:42:32,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:32,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:32,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:42:32,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:32,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:32,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:32,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash 450559209, now seen corresponding path program 1 times [2023-11-06 22:42:32,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:32,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466959531] [2023-11-06 22:42:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:32,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:32,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:32,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:32,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466959531] [2023-11-06 22:42:32,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466959531] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:32,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297507754] [2023-11-06 22:42:32,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:32,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:32,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:32,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:32,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:42:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:32,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:42:32,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:32,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:32,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297507754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:32,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:42:32,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-06 22:42:32,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128041426] [2023-11-06 22:42:32,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:32,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:42:32,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:32,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:42:32,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:42:32,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 243 [2023-11-06 22:42:32,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 245 flow. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:32,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:32,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 243 [2023-11-06 22:42:32,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:33,085 INFO L124 PetriNetUnfolderBase]: 895/1334 cut-off events. [2023-11-06 22:42:33,085 INFO L125 PetriNetUnfolderBase]: For 1241/1241 co-relation queries the response was YES. [2023-11-06 22:42:33,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4164 conditions, 1334 events. 895/1334 cut-off events. For 1241/1241 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5851 event pairs, 301 based on Foata normal form. 236/1180 useless extension candidates. Maximal degree in co-relation 4150. Up to 690 conditions per place. [2023-11-06 22:42:33,100 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 38 selfloop transitions, 12 changer transitions 0/50 dead transitions. [2023-11-06 22:42:33,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 50 transitions, 363 flow [2023-11-06 22:42:33,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:42:33,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:42:33,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2023-11-06 22:42:33,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46810699588477367 [2023-11-06 22:42:33,104 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2023-11-06 22:42:33,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2023-11-06 22:42:33,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:33,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2023-11-06 22:42:33,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:33,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:33,114 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:33,114 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 245 flow. Second operand 4 states and 455 transitions. [2023-11-06 22:42:33,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 50 transitions, 363 flow [2023-11-06 22:42:33,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 319 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-11-06 22:42:33,141 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 234 flow [2023-11-06 22:42:33,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2023-11-06 22:42:33,145 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-11-06 22:42:33,145 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 234 flow [2023-11-06 22:42:33,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:33,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:33,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:42:33,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:33,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:33,356 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:33,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:33,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1084332809, now seen corresponding path program 1 times [2023-11-06 22:42:33,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:33,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633072367] [2023-11-06 22:42:33,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:33,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:33,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:33,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:33,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633072367] [2023-11-06 22:42:33,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633072367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:33,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:33,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:42:33,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485184064] [2023-11-06 22:42:33,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:33,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:33,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:33,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:33,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:33,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 22:42:33,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:33,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:33,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 22:42:33,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:33,759 INFO L124 PetriNetUnfolderBase]: 1330/1976 cut-off events. [2023-11-06 22:42:33,759 INFO L125 PetriNetUnfolderBase]: For 3120/3120 co-relation queries the response was YES. [2023-11-06 22:42:33,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6439 conditions, 1976 events. 1330/1976 cut-off events. For 3120/3120 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9249 event pairs, 366 based on Foata normal form. 0/1391 useless extension candidates. Maximal degree in co-relation 6424. Up to 1140 conditions per place. [2023-11-06 22:42:33,779 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 65 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-06 22:42:33,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 67 transitions, 577 flow [2023-11-06 22:42:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:33,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:42:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2023-11-06 22:42:33,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773662551440329 [2023-11-06 22:42:33,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2023-11-06 22:42:33,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2023-11-06 22:42:33,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:33,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2023-11-06 22:42:33,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:33,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:33,787 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:33,788 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 234 flow. Second operand 3 states and 348 transitions. [2023-11-06 22:42:33,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 67 transitions, 577 flow [2023-11-06 22:42:33,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 67 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:42:33,798 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 247 flow [2023-11-06 22:42:33,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2023-11-06 22:42:33,801 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2023-11-06 22:42:33,801 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 247 flow [2023-11-06 22:42:33,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:33,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:33,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:42:33,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:42:33,807 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:33,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:33,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1084332709, now seen corresponding path program 1 times [2023-11-06 22:42:33,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:33,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937584378] [2023-11-06 22:42:33,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:33,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:33,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:33,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937584378] [2023-11-06 22:42:33,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937584378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:33,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:33,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:42:33,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775621557] [2023-11-06 22:42:33,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:33,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:33,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:33,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:33,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:33,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 22:42:33,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:33,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:33,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 22:42:33,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:34,145 INFO L124 PetriNetUnfolderBase]: 1040/1548 cut-off events. [2023-11-06 22:42:34,146 INFO L125 PetriNetUnfolderBase]: For 2704/2704 co-relation queries the response was YES. [2023-11-06 22:42:34,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5394 conditions, 1548 events. 1040/1548 cut-off events. For 2704/2704 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6904 event pairs, 160 based on Foata normal form. 69/1277 useless extension candidates. Maximal degree in co-relation 5377. Up to 1140 conditions per place. [2023-11-06 22:42:34,161 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 63 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-06 22:42:34,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 65 transitions, 580 flow [2023-11-06 22:42:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:34,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:42:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-11-06 22:42:34,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47462277091906724 [2023-11-06 22:42:34,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-11-06 22:42:34,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-11-06 22:42:34,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:34,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-11-06 22:42:34,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:34,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:34,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:34,168 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 247 flow. Second operand 3 states and 346 transitions. [2023-11-06 22:42:34,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 65 transitions, 580 flow [2023-11-06 22:42:34,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 65 transitions, 578 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:42:34,176 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 255 flow [2023-11-06 22:42:34,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-11-06 22:42:34,179 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2023-11-06 22:42:34,179 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 255 flow [2023-11-06 22:42:34,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:34,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:34,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:42:34,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:42:34,180 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:34,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:34,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1084330372, now seen corresponding path program 1 times [2023-11-06 22:42:34,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:34,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202270138] [2023-11-06 22:42:34,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:34,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:34,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:34,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202270138] [2023-11-06 22:42:34,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202270138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:34,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:34,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:42:34,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578091518] [2023-11-06 22:42:34,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:34,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:34,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:34,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:34,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:34,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 22:42:34,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:34,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:34,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 22:42:34,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:34,473 INFO L124 PetriNetUnfolderBase]: 970/1450 cut-off events. [2023-11-06 22:42:34,474 INFO L125 PetriNetUnfolderBase]: For 2218/2218 co-relation queries the response was YES. [2023-11-06 22:42:34,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5452 conditions, 1450 events. 970/1450 cut-off events. For 2218/2218 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6069 event pairs, 339 based on Foata normal form. 84/1255 useless extension candidates. Maximal degree in co-relation 5433. Up to 918 conditions per place. [2023-11-06 22:42:34,489 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 44 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-11-06 22:42:34,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 415 flow [2023-11-06 22:42:34,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:34,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:42:34,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2023-11-06 22:42:34,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773662551440329 [2023-11-06 22:42:34,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2023-11-06 22:42:34,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2023-11-06 22:42:34,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:34,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2023-11-06 22:42:34,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:34,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:34,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:34,496 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 255 flow. Second operand 3 states and 348 transitions. [2023-11-06 22:42:34,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 415 flow [2023-11-06 22:42:34,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:42:34,502 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 273 flow [2023-11-06 22:42:34,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-06 22:42:34,503 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-11-06 22:42:34,503 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 273 flow [2023-11-06 22:42:34,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:34,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:34,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:34,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:42:34,504 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:34,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:34,507 INFO L85 PathProgramCache]: Analyzing trace with hash -745420921, now seen corresponding path program 1 times [2023-11-06 22:42:34,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:34,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664961686] [2023-11-06 22:42:34,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:34,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:34,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:34,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664961686] [2023-11-06 22:42:34,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664961686] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:34,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992775468] [2023-11-06 22:42:34,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:34,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:34,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:34,589 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:34,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:42:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:34,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:42:34,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:34,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:34,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992775468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:34,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:42:34,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-06 22:42:34,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861436916] [2023-11-06 22:42:34,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:34,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:42:34,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:34,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:42:34,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:42:34,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 22:42:34,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:34,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:34,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 22:42:34,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:34,960 INFO L124 PetriNetUnfolderBase]: 835/1250 cut-off events. [2023-11-06 22:42:34,960 INFO L125 PetriNetUnfolderBase]: For 3083/3083 co-relation queries the response was YES. [2023-11-06 22:42:34,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4920 conditions, 1250 events. 835/1250 cut-off events. For 3083/3083 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5364 event pairs, 154 based on Foata normal form. 0/1048 useless extension candidates. Maximal degree in co-relation 4900. Up to 865 conditions per place. [2023-11-06 22:42:35,003 INFO L140 encePairwiseOnDemand]: 240/243 looper letters, 60 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-06 22:42:35,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 615 flow [2023-11-06 22:42:35,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:42:35,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:42:35,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2023-11-06 22:42:35,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619341563786008 [2023-11-06 22:42:35,006 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2023-11-06 22:42:35,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2023-11-06 22:42:35,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:35,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2023-11-06 22:42:35,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:35,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:35,011 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:35,011 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 273 flow. Second operand 4 states and 449 transitions. [2023-11-06 22:42:35,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 615 flow [2023-11-06 22:42:35,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 604 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:42:35,016 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 267 flow [2023-11-06 22:42:35,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2023-11-06 22:42:35,019 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2023-11-06 22:42:35,020 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 267 flow [2023-11-06 22:42:35,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:35,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:35,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:35,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:35,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:35,227 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:35,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:35,227 INFO L85 PathProgramCache]: Analyzing trace with hash -745420858, now seen corresponding path program 1 times [2023-11-06 22:42:35,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:35,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993802290] [2023-11-06 22:42:35,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:35,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:35,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:35,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993802290] [2023-11-06 22:42:35,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993802290] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:35,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545877014] [2023-11-06 22:42:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:35,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:35,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:35,310 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:35,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:42:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:35,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:42:35,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:35,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:35,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:35,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545877014] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:35,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:35,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-06 22:42:35,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009973424] [2023-11-06 22:42:35,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:35,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:42:35,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:35,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:42:35,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:42:35,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 243 [2023-11-06 22:42:35,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 267 flow. Second operand has 8 states, 8 states have (on average 104.625) internal successors, (837), 8 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:35,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:35,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 243 [2023-11-06 22:42:35,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:36,055 INFO L124 PetriNetUnfolderBase]: 1980/2915 cut-off events. [2023-11-06 22:42:36,055 INFO L125 PetriNetUnfolderBase]: For 7982/7982 co-relation queries the response was YES. [2023-11-06 22:42:36,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11333 conditions, 2915 events. 1980/2915 cut-off events. For 7982/7982 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 13676 event pairs, 154 based on Foata normal form. 195/2422 useless extension candidates. Maximal degree in co-relation 11312. Up to 931 conditions per place. [2023-11-06 22:42:36,095 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 141 selfloop transitions, 8 changer transitions 0/149 dead transitions. [2023-11-06 22:42:36,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 149 transitions, 1469 flow [2023-11-06 22:42:36,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:42:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:42:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 679 transitions. [2023-11-06 22:42:36,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657064471879287 [2023-11-06 22:42:36,100 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 679 transitions. [2023-11-06 22:42:36,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 679 transitions. [2023-11-06 22:42:36,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:36,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 679 transitions. [2023-11-06 22:42:36,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.16666666666667) internal successors, (679), 6 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:36,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:36,109 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:36,109 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 267 flow. Second operand 6 states and 679 transitions. [2023-11-06 22:42:36,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 149 transitions, 1469 flow [2023-11-06 22:42:36,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 149 transitions, 1466 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:42:36,121 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 325 flow [2023-11-06 22:42:36,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-11-06 22:42:36,124 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-11-06 22:42:36,124 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 325 flow [2023-11-06 22:42:36,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.625) internal successors, (837), 8 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:36,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:36,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:36,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:36,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:36,331 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:36,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:36,332 INFO L85 PathProgramCache]: Analyzing trace with hash -745420821, now seen corresponding path program 1 times [2023-11-06 22:42:36,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:36,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656068575] [2023-11-06 22:42:36,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:36,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:36,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:36,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:36,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656068575] [2023-11-06 22:42:36,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656068575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:36,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:36,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:42:36,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19647670] [2023-11-06 22:42:36,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:36,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:36,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:36,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:36,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:36,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 22:42:36,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 325 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:36,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:36,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 22:42:36,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:36,706 INFO L124 PetriNetUnfolderBase]: 1510/2250 cut-off events. [2023-11-06 22:42:36,706 INFO L125 PetriNetUnfolderBase]: For 6264/6264 co-relation queries the response was YES. [2023-11-06 22:42:36,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9522 conditions, 2250 events. 1510/2250 cut-off events. For 6264/6264 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10098 event pairs, 1036 based on Foata normal form. 0/2118 useless extension candidates. Maximal degree in co-relation 9498. Up to 2250 conditions per place. [2023-11-06 22:42:36,726 INFO L140 encePairwiseOnDemand]: 241/243 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-11-06 22:42:36,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 38 transitions, 372 flow [2023-11-06 22:42:36,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:36,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:42:36,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2023-11-06 22:42:36,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2023-11-06 22:42:36,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2023-11-06 22:42:36,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2023-11-06 22:42:36,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:36,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2023-11-06 22:42:36,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:36,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:36,733 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:36,733 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 325 flow. Second operand 3 states and 333 transitions. [2023-11-06 22:42:36,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 38 transitions, 372 flow [2023-11-06 22:42:36,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 38 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:42:36,741 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 296 flow [2023-11-06 22:42:36,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2023-11-06 22:42:36,742 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-11-06 22:42:36,742 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 296 flow [2023-11-06 22:42:36,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:36,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:36,743 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:36,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:42:36,744 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:36,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:36,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1635550076, now seen corresponding path program 1 times [2023-11-06 22:42:36,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:36,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920072222] [2023-11-06 22:42:36,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:36,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:36,798 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 22:42:36,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:36,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920072222] [2023-11-06 22:42:36,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920072222] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:36,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995852811] [2023-11-06 22:42:36,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:36,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:36,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:36,800 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:36,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:42:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:36,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:42:36,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:36,903 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 22:42:36,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:36,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995852811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:36,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:42:36,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-11-06 22:42:36,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099512751] [2023-11-06 22:42:36,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:36,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:42:36,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:36,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:42:36,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:42:36,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 22:42:36,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:36,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:36,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 22:42:36,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:37,334 INFO L124 PetriNetUnfolderBase]: 1631/2426 cut-off events. [2023-11-06 22:42:37,334 INFO L125 PetriNetUnfolderBase]: For 6693/6693 co-relation queries the response was YES. [2023-11-06 22:42:37,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10243 conditions, 2426 events. 1631/2426 cut-off events. For 6693/6693 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11054 event pairs, 513 based on Foata normal form. 0/2426 useless extension candidates. Maximal degree in co-relation 10218. Up to 1045 conditions per place. [2023-11-06 22:42:37,356 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 56 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2023-11-06 22:42:37,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 616 flow [2023-11-06 22:42:37,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:42:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:42:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 564 transitions. [2023-11-06 22:42:37,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641975308641975 [2023-11-06 22:42:37,360 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 564 transitions. [2023-11-06 22:42:37,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 564 transitions. [2023-11-06 22:42:37,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:37,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 564 transitions. [2023-11-06 22:42:37,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:37,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:37,367 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:37,368 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 296 flow. Second operand 5 states and 564 transitions. [2023-11-06 22:42:37,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 616 flow [2023-11-06 22:42:37,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:42:37,379 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 319 flow [2023-11-06 22:42:37,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-11-06 22:42:37,380 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2023-11-06 22:42:37,381 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 319 flow [2023-11-06 22:42:37,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:37,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:37,381 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-11-06 22:42:37,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:37,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:42:37,587 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:37,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:37,587 INFO L85 PathProgramCache]: Analyzing trace with hash 838597208, now seen corresponding path program 2 times [2023-11-06 22:42:37,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:37,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315332043] [2023-11-06 22:42:37,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:37,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:37,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:37,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315332043] [2023-11-06 22:42:37,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315332043] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:37,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227957528] [2023-11-06 22:42:37,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:42:37,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:37,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:37,712 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:37,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:42:37,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:42:37,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:42:37,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:42:37,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:37,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:38,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:38,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227957528] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:38,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:38,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-06 22:42:38,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857471753] [2023-11-06 22:42:38,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:38,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:42:38,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:38,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:42:38,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:42:38,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:42:38,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 319 flow. Second operand has 17 states, 17 states have (on average 104.41176470588235) internal successors, (1775), 17 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:38,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:38,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:42:38,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:39,014 INFO L124 PetriNetUnfolderBase]: 2623/3926 cut-off events. [2023-11-06 22:42:39,014 INFO L125 PetriNetUnfolderBase]: For 16558/16558 co-relation queries the response was YES. [2023-11-06 22:42:39,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17683 conditions, 3926 events. 2623/3926 cut-off events. For 16558/16558 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 18931 event pairs, 219 based on Foata normal form. 496/4422 useless extension candidates. Maximal degree in co-relation 17656. Up to 1786 conditions per place. [2023-11-06 22:42:39,049 INFO L140 encePairwiseOnDemand]: 238/243 looper letters, 152 selfloop transitions, 31 changer transitions 0/183 dead transitions. [2023-11-06 22:42:39,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 183 transitions, 1578 flow [2023-11-06 22:42:39,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:42:39,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:42:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1371 transitions. [2023-11-06 22:42:39,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47016460905349794 [2023-11-06 22:42:39,056 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1371 transitions. [2023-11-06 22:42:39,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1371 transitions. [2023-11-06 22:42:39,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:39,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1371 transitions. [2023-11-06 22:42:39,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.25) internal successors, (1371), 12 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:39,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 243.0) internal successors, (3159), 13 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:39,068 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 243.0) internal successors, (3159), 13 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:39,068 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 319 flow. Second operand 12 states and 1371 transitions. [2023-11-06 22:42:39,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 183 transitions, 1578 flow [2023-11-06 22:42:39,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 183 transitions, 1541 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-06 22:42:39,092 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 648 flow [2023-11-06 22:42:39,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=648, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2023-11-06 22:42:39,093 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2023-11-06 22:42:39,093 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 648 flow [2023-11-06 22:42:39,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.41176470588235) internal successors, (1775), 17 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:39,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:39,095 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:39,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:39,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:42:39,313 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:39,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:39,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1635550116, now seen corresponding path program 1 times [2023-11-06 22:42:39,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:39,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629045967] [2023-11-06 22:42:39,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:39,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:39,418 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 22:42:39,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:39,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629045967] [2023-11-06 22:42:39,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629045967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:39,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299827567] [2023-11-06 22:42:39,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:39,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:39,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:39,421 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:39,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:42:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:39,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:42:39,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:39,564 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 22:42:39,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:39,614 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 22:42:39,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299827567] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:39,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:39,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-11-06 22:42:39,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580909171] [2023-11-06 22:42:39,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:39,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:42:39,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:39,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:42:39,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:42:39,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:42:39,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 648 flow. Second operand has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:39,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:39,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:42:39,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:40,593 INFO L124 PetriNetUnfolderBase]: 3415/5114 cut-off events. [2023-11-06 22:42:40,593 INFO L125 PetriNetUnfolderBase]: For 33646/33646 co-relation queries the response was YES. [2023-11-06 22:42:40,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26208 conditions, 5114 events. 3415/5114 cut-off events. For 33646/33646 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 26753 event pairs, 274 based on Foata normal form. 264/5378 useless extension candidates. Maximal degree in co-relation 26175. Up to 3566 conditions per place. [2023-11-06 22:42:40,650 INFO L140 encePairwiseOnDemand]: 238/243 looper letters, 122 selfloop transitions, 21 changer transitions 0/143 dead transitions. [2023-11-06 22:42:40,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 143 transitions, 1494 flow [2023-11-06 22:42:40,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:42:40,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:42:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 907 transitions. [2023-11-06 22:42:40,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46656378600823045 [2023-11-06 22:42:40,655 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 907 transitions. [2023-11-06 22:42:40,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 907 transitions. [2023-11-06 22:42:40,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:40,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 907 transitions. [2023-11-06 22:42:40,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.375) internal successors, (907), 8 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:40,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 243.0) internal successors, (2187), 9 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:40,664 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 243.0) internal successors, (2187), 9 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:40,664 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 648 flow. Second operand 8 states and 907 transitions. [2023-11-06 22:42:40,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 143 transitions, 1494 flow [2023-11-06 22:42:40,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 143 transitions, 1418 flow, removed 35 selfloop flow, removed 2 redundant places. [2023-11-06 22:42:40,763 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 832 flow [2023-11-06 22:42:40,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=832, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2023-11-06 22:42:40,764 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2023-11-06 22:42:40,765 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 832 flow [2023-11-06 22:42:40,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:40,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:40,766 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:40,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:40,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:42:40,974 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:40,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:40,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1850293404, now seen corresponding path program 2 times [2023-11-06 22:42:40,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:40,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655174214] [2023-11-06 22:42:40,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:40,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:41,151 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:41,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:41,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655174214] [2023-11-06 22:42:41,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655174214] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:41,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686272175] [2023-11-06 22:42:41,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:42:41,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:41,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:41,154 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:41,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:42:41,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:42:41,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:42:41,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:42:41,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:41,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:41,508 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:41,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686272175] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:41,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:41,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-06 22:42:41,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565693160] [2023-11-06 22:42:41,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:41,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:42:41,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:41,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:42:41,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:42:41,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 243 [2023-11-06 22:42:41,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 832 flow. Second operand has 17 states, 17 states have (on average 102.76470588235294) internal successors, (1747), 17 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:41,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:41,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 243 [2023-11-06 22:42:41,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:43,686 INFO L124 PetriNetUnfolderBase]: 7087/10586 cut-off events. [2023-11-06 22:42:43,687 INFO L125 PetriNetUnfolderBase]: For 124460/124460 co-relation queries the response was YES. [2023-11-06 22:42:43,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56235 conditions, 10586 events. 7087/10586 cut-off events. For 124460/124460 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 58393 event pairs, 343 based on Foata normal form. 900/11486 useless extension candidates. Maximal degree in co-relation 56197. Up to 3151 conditions per place. [2023-11-06 22:42:43,818 INFO L140 encePairwiseOnDemand]: 240/243 looper letters, 654 selfloop transitions, 11 changer transitions 0/665 dead transitions. [2023-11-06 22:42:43,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 665 transitions, 9744 flow [2023-11-06 22:42:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:42:43,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:42:43,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1333 transitions. [2023-11-06 22:42:43,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45713305898491086 [2023-11-06 22:42:43,828 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1333 transitions. [2023-11-06 22:42:43,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1333 transitions. [2023-11-06 22:42:43,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:43,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1333 transitions. [2023-11-06 22:42:43,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 111.08333333333333) internal successors, (1333), 12 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:43,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 243.0) internal successors, (3159), 13 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:43,842 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 243.0) internal successors, (3159), 13 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:43,843 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 832 flow. Second operand 12 states and 1333 transitions. [2023-11-06 22:42:43,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 665 transitions, 9744 flow [2023-11-06 22:42:44,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 665 transitions, 9160 flow, removed 264 selfloop flow, removed 2 redundant places. [2023-11-06 22:42:44,025 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 862 flow [2023-11-06 22:42:44,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=862, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2023-11-06 22:42:44,026 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2023-11-06 22:42:44,026 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 862 flow [2023-11-06 22:42:44,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 102.76470588235294) internal successors, (1747), 17 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:44,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:44,030 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:44,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:44,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:42:44,235 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:44,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:44,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1572221284, now seen corresponding path program 1 times [2023-11-06 22:42:44,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:44,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656398158] [2023-11-06 22:42:44,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:44,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:44,359 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 22:42:44,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:44,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656398158] [2023-11-06 22:42:44,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656398158] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:44,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390488030] [2023-11-06 22:42:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:44,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:44,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:44,362 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:44,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:42:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:44,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:42:44,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:44,585 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 22:42:44,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:44,687 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 22:42:44,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390488030] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:44,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:44,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-06 22:42:44,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161416308] [2023-11-06 22:42:44,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:44,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:42:44,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:44,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:42:44,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:42:44,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:42:44,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 862 flow. Second operand has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:44,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:44,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:42:44,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:48,337 INFO L124 PetriNetUnfolderBase]: 10457/15799 cut-off events. [2023-11-06 22:42:48,337 INFO L125 PetriNetUnfolderBase]: For 163320/163320 co-relation queries the response was YES. [2023-11-06 22:42:48,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85058 conditions, 15799 events. 10457/15799 cut-off events. For 163320/163320 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 97710 event pairs, 482 based on Foata normal form. 727/16526 useless extension candidates. Maximal degree in co-relation 85014. Up to 5979 conditions per place. [2023-11-06 22:42:48,539 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 264 selfloop transitions, 73 changer transitions 0/337 dead transitions. [2023-11-06 22:42:48,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 337 transitions, 3829 flow [2023-11-06 22:42:48,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:42:48,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:42:48,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1696 transitions. [2023-11-06 22:42:48,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652949245541838 [2023-11-06 22:42:48,550 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1696 transitions. [2023-11-06 22:42:48,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1696 transitions. [2023-11-06 22:42:48,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:48,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1696 transitions. [2023-11-06 22:42:48,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 113.06666666666666) internal successors, (1696), 15 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:48,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 243.0) internal successors, (3888), 16 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:48,571 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 243.0) internal successors, (3888), 16 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:48,571 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 862 flow. Second operand 15 states and 1696 transitions. [2023-11-06 22:42:48,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 337 transitions, 3829 flow [2023-11-06 22:42:49,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 337 transitions, 3541 flow, removed 91 selfloop flow, removed 5 redundant places. [2023-11-06 22:42:49,351 INFO L231 Difference]: Finished difference. Result has 106 places, 116 transitions, 1594 flow [2023-11-06 22:42:49,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1594, PETRI_PLACES=106, PETRI_TRANSITIONS=116} [2023-11-06 22:42:49,352 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2023-11-06 22:42:49,353 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 116 transitions, 1594 flow [2023-11-06 22:42:49,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:49,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:49,354 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:49,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:49,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:42:49,561 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:49,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:49,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1963878234, now seen corresponding path program 1 times [2023-11-06 22:42:49,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:49,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310344790] [2023-11-06 22:42:49,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:49,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:49,799 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 22:42:49,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:49,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310344790] [2023-11-06 22:42:49,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310344790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:49,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500606515] [2023-11-06 22:42:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:49,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:49,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:49,802 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:49,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:42:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:49,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:42:49,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:50,035 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 22:42:50,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:50,144 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 22:42:50,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500606515] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:50,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:50,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-06 22:42:50,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646778305] [2023-11-06 22:42:50,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:50,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:42:50,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:50,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:42:50,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:42:50,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:42:50,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 116 transitions, 1594 flow. Second operand has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:50,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:50,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:42:50,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:54,826 INFO L124 PetriNetUnfolderBase]: 15563/23656 cut-off events. [2023-11-06 22:42:54,826 INFO L125 PetriNetUnfolderBase]: For 334361/334361 co-relation queries the response was YES. [2023-11-06 22:42:54,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142413 conditions, 23656 events. 15563/23656 cut-off events. For 334361/334361 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 158673 event pairs, 793 based on Foata normal form. 727/24383 useless extension candidates. Maximal degree in co-relation 142362. Up to 10323 conditions per place. [2023-11-06 22:42:55,085 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 346 selfloop transitions, 108 changer transitions 0/454 dead transitions. [2023-11-06 22:42:55,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 454 transitions, 5481 flow [2023-11-06 22:42:55,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:42:55,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:42:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2027 transitions. [2023-11-06 22:42:55,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634202103337906 [2023-11-06 22:42:55,096 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2027 transitions. [2023-11-06 22:42:55,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2027 transitions. [2023-11-06 22:42:55,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:55,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2027 transitions. [2023-11-06 22:42:55,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 112.61111111111111) internal successors, (2027), 18 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:55,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 243.0) internal successors, (4617), 19 states have internal predecessors, (4617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:55,117 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 243.0) internal successors, (4617), 19 states have internal predecessors, (4617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:55,117 INFO L175 Difference]: Start difference. First operand has 106 places, 116 transitions, 1594 flow. Second operand 18 states and 2027 transitions. [2023-11-06 22:42:55,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 454 transitions, 5481 flow [2023-11-06 22:42:58,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 454 transitions, 5175 flow, removed 144 selfloop flow, removed 6 redundant places. [2023-11-06 22:42:58,996 INFO L231 Difference]: Finished difference. Result has 124 places, 180 transitions, 2668 flow [2023-11-06 22:42:58,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2668, PETRI_PLACES=124, PETRI_TRANSITIONS=180} [2023-11-06 22:42:58,997 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2023-11-06 22:42:58,998 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 180 transitions, 2668 flow [2023-11-06 22:42:58,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:58,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:58,999 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:59,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:59,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:42:59,206 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:42:59,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:59,206 INFO L85 PathProgramCache]: Analyzing trace with hash -756222374, now seen corresponding path program 2 times [2023-11-06 22:42:59,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:59,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748518013] [2023-11-06 22:42:59,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:59,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:59,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:59,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748518013] [2023-11-06 22:42:59,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748518013] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:59,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158188809] [2023-11-06 22:42:59,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:42:59,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:59,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:59,406 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:59,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:42:59,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:42:59,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:42:59,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:42:59,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:59,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:59,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:59,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158188809] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:59,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:59,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-11-06 22:42:59,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593450237] [2023-11-06 22:42:59,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:59,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:42:59,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:59,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:42:59,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:42:59,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:42:59,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 180 transitions, 2668 flow. Second operand has 20 states, 20 states have (on average 104.8) internal successors, (2096), 20 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:59,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:59,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:42:59,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:43:07,145 INFO L124 PetriNetUnfolderBase]: 20735/31632 cut-off events. [2023-11-06 22:43:07,145 INFO L125 PetriNetUnfolderBase]: For 595743/595743 co-relation queries the response was YES. [2023-11-06 22:43:07,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200734 conditions, 31632 events. 20735/31632 cut-off events. For 595743/595743 co-relation queries the response was YES. Maximal size of possible extension queue 987. Compared 222407 event pairs, 1338 based on Foata normal form. 944/32576 useless extension candidates. Maximal degree in co-relation 200677. Up to 12839 conditions per place. [2023-11-06 22:43:07,566 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 352 selfloop transitions, 151 changer transitions 0/503 dead transitions. [2023-11-06 22:43:07,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 503 transitions, 6558 flow [2023-11-06 22:43:07,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:43:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 22:43:07,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1925 transitions. [2023-11-06 22:43:07,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598886468167516 [2023-11-06 22:43:07,574 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1925 transitions. [2023-11-06 22:43:07,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1925 transitions. [2023-11-06 22:43:07,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:43:07,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1925 transitions. [2023-11-06 22:43:07,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 113.23529411764706) internal successors, (1925), 17 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:07,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 243.0) internal successors, (4374), 18 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:07,596 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 243.0) internal successors, (4374), 18 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:07,596 INFO L175 Difference]: Start difference. First operand has 124 places, 180 transitions, 2668 flow. Second operand 17 states and 1925 transitions. [2023-11-06 22:43:07,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 503 transitions, 6558 flow [2023-11-06 22:43:17,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 503 transitions, 6315 flow, removed 117 selfloop flow, removed 3 redundant places. [2023-11-06 22:43:17,607 INFO L231 Difference]: Finished difference. Result has 145 places, 240 transitions, 3972 flow [2023-11-06 22:43:17,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3972, PETRI_PLACES=145, PETRI_TRANSITIONS=240} [2023-11-06 22:43:17,608 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2023-11-06 22:43:17,608 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 240 transitions, 3972 flow [2023-11-06 22:43:17,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 104.8) internal successors, (2096), 20 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:17,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:43:17,609 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:17,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:17,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:43:17,809 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:43:17,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:17,810 INFO L85 PathProgramCache]: Analyzing trace with hash -760869000, now seen corresponding path program 2 times [2023-11-06 22:43:17,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:17,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592375054] [2023-11-06 22:43:17,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:17,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:17,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:17,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592375054] [2023-11-06 22:43:17,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592375054] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:43:17,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850435834] [2023-11-06 22:43:17,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:43:17,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:17,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:17,968 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:17,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:43:18,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:43:18,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:43:18,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:43:18,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:18,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:18,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850435834] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:18,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:43:18,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-06 22:43:18,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963178763] [2023-11-06 22:43:18,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:18,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:43:18,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:18,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:43:18,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=334, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:43:18,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:43:18,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 240 transitions, 3972 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:18,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:43:18,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:43:18,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:43:29,369 INFO L124 PetriNetUnfolderBase]: 25097/38345 cut-off events. [2023-11-06 22:43:29,370 INFO L125 PetriNetUnfolderBase]: For 1065511/1065511 co-relation queries the response was YES. [2023-11-06 22:43:29,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262382 conditions, 38345 events. 25097/38345 cut-off events. For 1065511/1065511 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 275726 event pairs, 1422 based on Foata normal form. 1141/39486 useless extension candidates. Maximal degree in co-relation 262316. Up to 11489 conditions per place. [2023-11-06 22:43:29,860 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 397 selfloop transitions, 236 changer transitions 0/633 dead transitions. [2023-11-06 22:43:29,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 633 transitions, 8833 flow [2023-11-06 22:43:29,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:43:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-06 22:43:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2373 transitions. [2023-11-06 22:43:29,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46502057613168724 [2023-11-06 22:43:29,866 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2373 transitions. [2023-11-06 22:43:29,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2373 transitions. [2023-11-06 22:43:29,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:43:29,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2373 transitions. [2023-11-06 22:43:29,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 113.0) internal successors, (2373), 21 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:29,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 243.0) internal successors, (5346), 22 states have internal predecessors, (5346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:29,883 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 243.0) internal successors, (5346), 22 states have internal predecessors, (5346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:29,883 INFO L175 Difference]: Start difference. First operand has 145 places, 240 transitions, 3972 flow. Second operand 21 states and 2373 transitions. [2023-11-06 22:43:29,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 633 transitions, 8833 flow [2023-11-06 22:43:48,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 633 transitions, 8459 flow, removed 172 selfloop flow, removed 6 redundant places. [2023-11-06 22:43:48,798 INFO L231 Difference]: Finished difference. Result has 168 places, 304 transitions, 5586 flow [2023-11-06 22:43:48,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=3754, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5586, PETRI_PLACES=168, PETRI_TRANSITIONS=304} [2023-11-06 22:43:48,799 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2023-11-06 22:43:48,799 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 304 transitions, 5586 flow [2023-11-06 22:43:48,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:48,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:43:48,800 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:48,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:49,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:43:49,002 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:43:49,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:49,003 INFO L85 PathProgramCache]: Analyzing trace with hash -932637958, now seen corresponding path program 3 times [2023-11-06 22:43:49,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:49,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174695440] [2023-11-06 22:43:49,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:49,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:49,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:49,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174695440] [2023-11-06 22:43:49,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174695440] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:43:49,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146470283] [2023-11-06 22:43:49,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:43:49,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:49,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:49,144 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:49,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:43:49,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:43:49,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:43:49,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:43:49,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:49,405 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:49,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:49,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146470283] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:49,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:43:49,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-06 22:43:49,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578320178] [2023-11-06 22:43:49,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:49,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:43:49,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:49,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:43:49,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:43:49,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:43:49,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 304 transitions, 5586 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:49,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:43:49,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:43:49,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:04,939 INFO L124 PetriNetUnfolderBase]: 35399/54110 cut-off events. [2023-11-06 22:44:04,939 INFO L125 PetriNetUnfolderBase]: For 1793380/1793380 co-relation queries the response was YES. [2023-11-06 22:44:05,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392542 conditions, 54110 events. 35399/54110 cut-off events. For 1793380/1793380 co-relation queries the response was YES. Maximal size of possible extension queue 1667. Compared 408874 event pairs, 1991 based on Foata normal form. 1325/55435 useless extension candidates. Maximal degree in co-relation 392468. Up to 17392 conditions per place. [2023-11-06 22:44:06,051 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 548 selfloop transitions, 320 changer transitions 0/868 dead transitions. [2023-11-06 22:44:06,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 868 transitions, 13147 flow [2023-11-06 22:44:06,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-06 22:44:06,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-06 22:44:06,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3036 transitions. [2023-11-06 22:44:06,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46273433927754914 [2023-11-06 22:44:06,061 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3036 transitions. [2023-11-06 22:44:06,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3036 transitions. [2023-11-06 22:44:06,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:06,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3036 transitions. [2023-11-06 22:44:06,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 112.44444444444444) internal successors, (3036), 27 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:06,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 243.0) internal successors, (6804), 28 states have internal predecessors, (6804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:06,085 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 243.0) internal successors, (6804), 28 states have internal predecessors, (6804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:06,086 INFO L175 Difference]: Start difference. First operand has 168 places, 304 transitions, 5586 flow. Second operand 27 states and 3036 transitions. [2023-11-06 22:44:06,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 868 transitions, 13147 flow [2023-11-06 22:44:57,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 868 transitions, 12678 flow, removed 224 selfloop flow, removed 4 redundant places. [2023-11-06 22:44:57,107 INFO L231 Difference]: Finished difference. Result has 199 places, 435 transitions, 8690 flow [2023-11-06 22:44:57,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=5299, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=8690, PETRI_PLACES=199, PETRI_TRANSITIONS=435} [2023-11-06 22:44:57,108 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2023-11-06 22:44:57,109 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 435 transitions, 8690 flow [2023-11-06 22:44:57,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:57,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:57,110 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:57,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:57,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:57,315 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 22:44:57,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:57,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1796464920, now seen corresponding path program 4 times [2023-11-06 22:44:57,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:57,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245336538] [2023-11-06 22:44:57,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:57,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:57,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:57,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245336538] [2023-11-06 22:44:57,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245336538] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:57,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167559396] [2023-11-06 22:44:57,450 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:44:57,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:57,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:57,452 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:57,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463a00bc-07b8-4131-ae64-6e17d26db2f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:44:57,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:44:57,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:44:57,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:44:57,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:57,712 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:57,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:57,851 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:57,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167559396] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:57,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:57,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-06 22:44:57,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022763810] [2023-11-06 22:44:57,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:57,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:44:57,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:57,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:44:57,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:44:57,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-11-06 22:44:57,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 435 transitions, 8690 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:57,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:57,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-11-06 22:44:57,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand