./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-11.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:35:56,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:35:56,851 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 04:35:56,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:35:56,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:35:56,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:35:56,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:35:56,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:35:56,891 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:35:56,891 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:35:56,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:35:56,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:35:56,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:35:56,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:35:56,894 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:35:56,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:35:56,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:35:56,895 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:35:56,896 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:35:56,896 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:35:56,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:35:56,897 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:35:56,898 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:35:56,898 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:35:56,898 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 04:35:56,899 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:35:56,899 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:35:56,899 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:35:56,900 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:35:56,900 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:35:56,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:35:56,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:35:56,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:35:56,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:35:56,902 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:35:56,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:35:56,902 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:35:56,902 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:35:56,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:35:56,903 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:35:56,903 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:35:56,903 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:35:56,903 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:35:56,904 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:35:56,904 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_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 [2023-11-29 04:35:57,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:35:57,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:35:57,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:35:57,166 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:35:57,166 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:35:57,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/fib_safe-11.i [2023-11-29 04:35:59,841 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:36:00,073 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:36:00,074 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/sv-benchmarks/c/pthread/fib_safe-11.i [2023-11-29 04:36:00,089 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/data/f34c32ad2/3b915a5892d14758a316c2205a7c3f46/FLAG1c9a7843a [2023-11-29 04:36:00,104 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/data/f34c32ad2/3b915a5892d14758a316c2205a7c3f46 [2023-11-29 04:36:00,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:36:00,108 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:36:00,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:36:00,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:36:00,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:36:00,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:36:00" (1/1) ... [2023-11-29 04:36:00,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@687cd318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:36:00, skipping insertion in model container [2023-11-29 04:36:00,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:36:00" (1/1) ... [2023-11-29 04:36:00,172 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:36:00,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:36:00,505 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:36:00,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:36:00,586 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:36:00,587 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:36:00,595 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:36:00,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:36:00 WrapperNode [2023-11-29 04:36:00,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:36:00,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:36:00,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:36:00,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:36:00,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:36:00" (1/1) ... [2023-11-29 04:36:00,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:36:00" (1/1) ... [2023-11-29 04:36:00,648 INFO L138 Inliner]: procedures = 165, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 81 [2023-11-29 04:36:00,649 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:36:00,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:36:00,650 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:36:00,650 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:36:00,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:36:00" (1/1) ... [2023-11-29 04:36:00,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:36:00" (1/1) ... [2023-11-29 04:36:00,667 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:36:00" (1/1) ... [2023-11-29 04:36:00,683 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 04:36:00,684 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:36:00" (1/1) ... [2023-11-29 04:36:00,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:36:00" (1/1) ... [2023-11-29 04:36:00,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:36:00" (1/1) ... [2023-11-29 04:36:00,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:36:00" (1/1) ... [2023-11-29 04:36:00,697 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:36:00" (1/1) ... [2023-11-29 04:36:00,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:36:00" (1/1) ... [2023-11-29 04:36:00,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:36:00,703 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:36:00,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:36:00,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:36:00,704 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:36:00" (1/1) ... [2023-11-29 04:36:00,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:36:00,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:00,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:36:00,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:36:00,789 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-29 04:36:00,789 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-29 04:36:00,789 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-29 04:36:00,790 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-29 04:36:00,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:36:00,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:36:00,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:36:00,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 04:36:00,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:36:00,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:36:00,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:36:00,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:36:00,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:36:00,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:36:00,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 04:36:00,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:36:00,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:36:00,798 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:36:00,950 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:36:00,952 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:36:01,140 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:36:01,266 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:36:01,266 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 04:36:01,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:36:01 BoogieIcfgContainer [2023-11-29 04:36:01,266 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:36:01,269 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:36:01,269 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:36:01,271 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:36:01,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:36:00" (1/3) ... [2023-11-29 04:36:01,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161eacba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:36:01, skipping insertion in model container [2023-11-29 04:36:01,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:36:00" (2/3) ... [2023-11-29 04:36:01,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161eacba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:36:01, skipping insertion in model container [2023-11-29 04:36:01,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:36:01" (3/3) ... [2023-11-29 04:36:01,274 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-11.i [2023-11-29 04:36:01,280 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:36:01,287 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:36:01,288 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-29 04:36:01,288 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:36:01,324 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 04:36:01,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2023-11-29 04:36:01,382 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2023-11-29 04:36:01,383 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:36:01,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 42 events. 3/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 117 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-11-29 04:36:01,386 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2023-11-29 04:36:01,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2023-11-29 04:36:01,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:36:01,405 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5f37cc7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:36:01,406 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-29 04:36:01,413 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:36:01,413 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-29 04:36:01,413 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:36:01,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:01,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:01,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:01,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:01,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2124757497, now seen corresponding path program 1 times [2023-11-29 04:36:01,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:01,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256537881] [2023-11-29 04:36:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:01,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:01,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:01,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256537881] [2023-11-29 04:36:01,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256537881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:01,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:36:01,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:36:01,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967123493] [2023-11-29 04:36:01,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:01,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:36:01,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:01,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:36:01,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:36:01,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 04:36:01,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:01,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:01,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 04:36:01,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:02,049 INFO L124 PetriNetUnfolderBase]: 657/1292 cut-off events. [2023-11-29 04:36:02,049 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 04:36:02,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2311 conditions, 1292 events. 657/1292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8040 event pairs, 156 based on Foata normal form. 0/989 useless extension candidates. Maximal degree in co-relation 2295. Up to 514 conditions per place. [2023-11-29 04:36:02,068 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 46 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2023-11-29 04:36:02,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 249 flow [2023-11-29 04:36:02,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:36:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:36:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2023-11-29 04:36:02,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2023-11-29 04:36:02,082 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 135 transitions. [2023-11-29 04:36:02,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 135 transitions. [2023-11-29 04:36:02,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:02,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 135 transitions. [2023-11-29 04:36:02,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:02,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:02,094 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:02,096 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 135 transitions. [2023-11-29 04:36:02,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 249 flow [2023-11-29 04:36:02,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:36:02,103 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2023-11-29 04:36:02,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-11-29 04:36:02,109 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2023-11-29 04:36:02,109 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2023-11-29 04:36:02,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:02,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:02,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:02,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:36:02,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:02,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:02,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1782477494, now seen corresponding path program 1 times [2023-11-29 04:36:02,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:02,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943400226] [2023-11-29 04:36:02,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:02,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:02,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:02,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943400226] [2023-11-29 04:36:02,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943400226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:02,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:36:02,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:36:02,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108123958] [2023-11-29 04:36:02,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:02,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:36:02,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:02,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:36:02,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:36:02,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 04:36:02,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:02,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:02,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 04:36:02,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:02,534 INFO L124 PetriNetUnfolderBase]: 885/1598 cut-off events. [2023-11-29 04:36:02,534 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2023-11-29 04:36:02,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3406 conditions, 1598 events. 885/1598 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9953 event pairs, 213 based on Foata normal form. 74/1372 useless extension candidates. Maximal degree in co-relation 3390. Up to 785 conditions per place. [2023-11-29 04:36:02,552 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 55 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-11-29 04:36:02,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 75 transitions, 315 flow [2023-11-29 04:36:02,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:36:02,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:36:02,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2023-11-29 04:36:02,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2023-11-29 04:36:02,554 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 135 transitions. [2023-11-29 04:36:02,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 135 transitions. [2023-11-29 04:36:02,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:02,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 135 transitions. [2023-11-29 04:36:02,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:02,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:02,558 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:02,558 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 4 states and 135 transitions. [2023-11-29 04:36:02,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 75 transitions, 315 flow [2023-11-29 04:36:02,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 315 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:36:02,563 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 143 flow [2023-11-29 04:36:02,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2023-11-29 04:36:02,564 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2023-11-29 04:36:02,564 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 143 flow [2023-11-29 04:36:02,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:02,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:02,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:02,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:36:02,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:02,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1804922460, now seen corresponding path program 1 times [2023-11-29 04:36:02,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:02,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030088382] [2023-11-29 04:36:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:02,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:02,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:02,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:02,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030088382] [2023-11-29 04:36:02,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030088382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:02,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:36:02,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:36:02,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048916860] [2023-11-29 04:36:02,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:02,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:36:02,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:02,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:36:02,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:36:02,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2023-11-29 04:36:02,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:02,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:02,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2023-11-29 04:36:02,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:02,943 INFO L124 PetriNetUnfolderBase]: 1133/2347 cut-off events. [2023-11-29 04:36:02,944 INFO L125 PetriNetUnfolderBase]: For 492/649 co-relation queries the response was YES. [2023-11-29 04:36:02,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4980 conditions, 2347 events. 1133/2347 cut-off events. For 492/649 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 17404 event pairs, 365 based on Foata normal form. 106/2046 useless extension candidates. Maximal degree in co-relation 4960. Up to 993 conditions per place. [2023-11-29 04:36:02,970 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-29 04:36:02,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 66 transitions, 300 flow [2023-11-29 04:36:02,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:36:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:36:02,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2023-11-29 04:36:02,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2023-11-29 04:36:02,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 102 transitions. [2023-11-29 04:36:02,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 102 transitions. [2023-11-29 04:36:02,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:02,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 102 transitions. [2023-11-29 04:36:02,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:02,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:02,974 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:02,974 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 143 flow. Second operand 3 states and 102 transitions. [2023-11-29 04:36:02,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 66 transitions, 300 flow [2023-11-29 04:36:02,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:36:02,977 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2023-11-29 04:36:02,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2023-11-29 04:36:02,978 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2023-11-29 04:36:02,979 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2023-11-29 04:36:02,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:02,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:02,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:02,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:36:02,979 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:02,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:02,980 INFO L85 PathProgramCache]: Analyzing trace with hash -118021125, now seen corresponding path program 1 times [2023-11-29 04:36:02,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:02,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338251068] [2023-11-29 04:36:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:02,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:03,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:03,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338251068] [2023-11-29 04:36:03,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338251068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:03,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:36:03,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:36:03,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403838471] [2023-11-29 04:36:03,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:03,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:36:03,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:03,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:36:03,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:36:03,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2023-11-29 04:36:03,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:03,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:03,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2023-11-29 04:36:03,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:03,340 INFO L124 PetriNetUnfolderBase]: 1133/2310 cut-off events. [2023-11-29 04:36:03,340 INFO L125 PetriNetUnfolderBase]: For 616/773 co-relation queries the response was YES. [2023-11-29 04:36:03,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5137 conditions, 2310 events. 1133/2310 cut-off events. For 616/773 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16873 event pairs, 365 based on Foata normal form. 92/1995 useless extension candidates. Maximal degree in co-relation 5115. Up to 993 conditions per place. [2023-11-29 04:36:03,362 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-29 04:36:03,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 307 flow [2023-11-29 04:36:03,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:36:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:36:03,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2023-11-29 04:36:03,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2023-11-29 04:36:03,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 102 transitions. [2023-11-29 04:36:03,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 102 transitions. [2023-11-29 04:36:03,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:03,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 102 transitions. [2023-11-29 04:36:03,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:03,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:03,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:03,367 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 102 transitions. [2023-11-29 04:36:03,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 307 flow [2023-11-29 04:36:03,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:36:03,370 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2023-11-29 04:36:03,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2023-11-29 04:36:03,371 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2023-11-29 04:36:03,371 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2023-11-29 04:36:03,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:03,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:03,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:03,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:36:03,372 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:03,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:03,373 INFO L85 PathProgramCache]: Analyzing trace with hash 653903621, now seen corresponding path program 1 times [2023-11-29 04:36:03,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:03,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425086610] [2023-11-29 04:36:03,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:03,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:03,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:03,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425086610] [2023-11-29 04:36:03,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425086610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:03,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:36:03,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:36:03,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569464372] [2023-11-29 04:36:03,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:03,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:36:03,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:03,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:36:03,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:36:03,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 04:36:03,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:03,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:03,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 04:36:03,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:03,903 INFO L124 PetriNetUnfolderBase]: 2065/3705 cut-off events. [2023-11-29 04:36:03,903 INFO L125 PetriNetUnfolderBase]: For 1351/1765 co-relation queries the response was YES. [2023-11-29 04:36:03,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8799 conditions, 3705 events. 2065/3705 cut-off events. For 1351/1765 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 26312 event pairs, 457 based on Foata normal form. 255/3366 useless extension candidates. Maximal degree in co-relation 8775. Up to 2001 conditions per place. [2023-11-29 04:36:03,938 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 60 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-11-29 04:36:03,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 399 flow [2023-11-29 04:36:03,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:36:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:36:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2023-11-29 04:36:03,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7443181818181818 [2023-11-29 04:36:03,940 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 131 transitions. [2023-11-29 04:36:03,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 131 transitions. [2023-11-29 04:36:03,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:03,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 131 transitions. [2023-11-29 04:36:03,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:03,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:03,942 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:03,942 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 131 transitions. [2023-11-29 04:36:03,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 399 flow [2023-11-29 04:36:03,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:36:03,946 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 179 flow [2023-11-29 04:36:03,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2023-11-29 04:36:03,947 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2023-11-29 04:36:03,947 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 179 flow [2023-11-29 04:36:03,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:03,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:03,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:03,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:36:03,948 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:03,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:03,949 INFO L85 PathProgramCache]: Analyzing trace with hash 636312731, now seen corresponding path program 1 times [2023-11-29 04:36:03,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:03,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698373508] [2023-11-29 04:36:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:03,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:03,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:03,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698373508] [2023-11-29 04:36:03,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698373508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:04,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:36:04,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:36:04,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550746730] [2023-11-29 04:36:04,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:04,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:36:04,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:04,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:36:04,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:36:04,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 04:36:04,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:04,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:04,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 04:36:04,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:04,439 INFO L124 PetriNetUnfolderBase]: 1601/3211 cut-off events. [2023-11-29 04:36:04,439 INFO L125 PetriNetUnfolderBase]: For 1181/1660 co-relation queries the response was YES. [2023-11-29 04:36:04,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7718 conditions, 3211 events. 1601/3211 cut-off events. For 1181/1660 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 24157 event pairs, 227 based on Foata normal form. 337/2957 useless extension candidates. Maximal degree in co-relation 7692. Up to 1673 conditions per place. [2023-11-29 04:36:04,470 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2023-11-29 04:36:04,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 445 flow [2023-11-29 04:36:04,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:36:04,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:36:04,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2023-11-29 04:36:04,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2023-11-29 04:36:04,472 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 133 transitions. [2023-11-29 04:36:04,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 133 transitions. [2023-11-29 04:36:04,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:04,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 133 transitions. [2023-11-29 04:36:04,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:04,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:04,474 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:04,474 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 179 flow. Second operand 4 states and 133 transitions. [2023-11-29 04:36:04,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 445 flow [2023-11-29 04:36:04,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:36:04,478 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 197 flow [2023-11-29 04:36:04,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2023-11-29 04:36:04,479 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-11-29 04:36:04,479 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 197 flow [2023-11-29 04:36:04,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:04,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:04,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:04,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:36:04,480 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:04,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:04,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1160774394, now seen corresponding path program 1 times [2023-11-29 04:36:04,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:04,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891325292] [2023-11-29 04:36:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:04,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:04,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:04,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891325292] [2023-11-29 04:36:04,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891325292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:04,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:36:04,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:36:04,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591350734] [2023-11-29 04:36:04,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:04,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:36:04,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:04,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:36:04,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:36:04,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 04:36:04,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:04,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:04,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 04:36:04,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:04,871 INFO L124 PetriNetUnfolderBase]: 1121/2194 cut-off events. [2023-11-29 04:36:04,871 INFO L125 PetriNetUnfolderBase]: For 1435/1771 co-relation queries the response was YES. [2023-11-29 04:36:04,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6016 conditions, 2194 events. 1121/2194 cut-off events. For 1435/1771 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14734 event pairs, 160 based on Foata normal form. 49/1932 useless extension candidates. Maximal degree in co-relation 5985. Up to 835 conditions per place. [2023-11-29 04:36:04,889 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2023-11-29 04:36:04,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 499 flow [2023-11-29 04:36:04,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:36:04,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:36:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2023-11-29 04:36:04,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2023-11-29 04:36:04,891 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 161 transitions. [2023-11-29 04:36:04,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 161 transitions. [2023-11-29 04:36:04,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:04,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 161 transitions. [2023-11-29 04:36:04,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:04,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:04,894 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:04,894 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 197 flow. Second operand 5 states and 161 transitions. [2023-11-29 04:36:04,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 499 flow [2023-11-29 04:36:04,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 489 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:36:04,900 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2023-11-29 04:36:04,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2023-11-29 04:36:04,901 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2023-11-29 04:36:04,901 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2023-11-29 04:36:04,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:04,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:04,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:04,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:36:04,902 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:04,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:04,902 INFO L85 PathProgramCache]: Analyzing trace with hash 345865615, now seen corresponding path program 1 times [2023-11-29 04:36:04,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:04,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530528259] [2023-11-29 04:36:04,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:04,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:04,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:04,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530528259] [2023-11-29 04:36:04,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530528259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:04,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:36:04,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:36:04,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999298899] [2023-11-29 04:36:04,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:04,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:36:04,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:04,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:36:04,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:36:04,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 04:36:04,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:04,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:04,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 04:36:04,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:05,312 INFO L124 PetriNetUnfolderBase]: 1167/2323 cut-off events. [2023-11-29 04:36:05,313 INFO L125 PetriNetUnfolderBase]: For 1787/2055 co-relation queries the response was YES. [2023-11-29 04:36:05,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6628 conditions, 2323 events. 1167/2323 cut-off events. For 1787/2055 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15992 event pairs, 223 based on Foata normal form. 79/2245 useless extension candidates. Maximal degree in co-relation 6595. Up to 1105 conditions per place. [2023-11-29 04:36:05,331 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2023-11-29 04:36:05,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 520 flow [2023-11-29 04:36:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:36:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:36:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2023-11-29 04:36:05,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2023-11-29 04:36:05,333 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 162 transitions. [2023-11-29 04:36:05,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 162 transitions. [2023-11-29 04:36:05,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:05,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 162 transitions. [2023-11-29 04:36:05,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:05,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:05,336 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:05,336 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 162 transitions. [2023-11-29 04:36:05,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 520 flow [2023-11-29 04:36:05,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 509 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:36:05,340 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2023-11-29 04:36:05,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2023-11-29 04:36:05,341 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2023-11-29 04:36:05,342 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2023-11-29 04:36:05,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:05,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:05,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:05,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:36:05,342 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:05,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:05,343 INFO L85 PathProgramCache]: Analyzing trace with hash 108763395, now seen corresponding path program 1 times [2023-11-29 04:36:05,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:05,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598777399] [2023-11-29 04:36:05,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:05,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:05,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:05,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:05,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598777399] [2023-11-29 04:36:05,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598777399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:05,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:36:05,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:36:05,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103228857] [2023-11-29 04:36:05,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:05,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:36:05,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:05,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:36:05,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:36:05,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 04:36:05,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:05,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:05,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 04:36:05,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:05,774 INFO L124 PetriNetUnfolderBase]: 1258/2463 cut-off events. [2023-11-29 04:36:05,774 INFO L125 PetriNetUnfolderBase]: For 2561/2850 co-relation queries the response was YES. [2023-11-29 04:36:05,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7423 conditions, 2463 events. 1258/2463 cut-off events. For 2561/2850 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 16974 event pairs, 279 based on Foata normal form. 91/2376 useless extension candidates. Maximal degree in co-relation 7389. Up to 1236 conditions per place. [2023-11-29 04:36:05,794 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 65 selfloop transitions, 9 changer transitions 0/94 dead transitions. [2023-11-29 04:36:05,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 560 flow [2023-11-29 04:36:05,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:36:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:36:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2023-11-29 04:36:05,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2023-11-29 04:36:05,796 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 162 transitions. [2023-11-29 04:36:05,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 162 transitions. [2023-11-29 04:36:05,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:05,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 162 transitions. [2023-11-29 04:36:05,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:05,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:05,798 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:05,798 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 162 transitions. [2023-11-29 04:36:05,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 560 flow [2023-11-29 04:36:05,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 94 transitions, 543 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 04:36:05,804 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 288 flow [2023-11-29 04:36:05,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=288, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2023-11-29 04:36:05,805 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2023-11-29 04:36:05,805 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 288 flow [2023-11-29 04:36:05,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:05,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:05,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:05,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:36:05,806 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:05,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:05,806 INFO L85 PathProgramCache]: Analyzing trace with hash 108763394, now seen corresponding path program 1 times [2023-11-29 04:36:05,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:05,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538533479] [2023-11-29 04:36:05,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:05,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:05,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:05,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:05,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538533479] [2023-11-29 04:36:05,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538533479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:05,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:36:05,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:36:05,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459553020] [2023-11-29 04:36:05,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:05,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:36:05,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:05,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:36:05,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:36:05,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 04:36:05,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:05,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:05,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 04:36:05,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:06,203 INFO L124 PetriNetUnfolderBase]: 1083/2162 cut-off events. [2023-11-29 04:36:06,203 INFO L125 PetriNetUnfolderBase]: For 3503/3753 co-relation queries the response was YES. [2023-11-29 04:36:06,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6783 conditions, 2162 events. 1083/2162 cut-off events. For 3503/3753 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14637 event pairs, 258 based on Foata normal form. 126/2208 useless extension candidates. Maximal degree in co-relation 6746. Up to 1229 conditions per place. [2023-11-29 04:36:06,220 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 54 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2023-11-29 04:36:06,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 80 transitions, 490 flow [2023-11-29 04:36:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:36:06,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:36:06,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2023-11-29 04:36:06,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2023-11-29 04:36:06,221 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 148 transitions. [2023-11-29 04:36:06,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 148 transitions. [2023-11-29 04:36:06,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:06,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 148 transitions. [2023-11-29 04:36:06,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:06,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:06,223 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:06,224 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 288 flow. Second operand 5 states and 148 transitions. [2023-11-29 04:36:06,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 80 transitions, 490 flow [2023-11-29 04:36:06,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 474 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 04:36:06,230 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 271 flow [2023-11-29 04:36:06,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2023-11-29 04:36:06,231 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2023-11-29 04:36:06,231 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 271 flow [2023-11-29 04:36:06,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:06,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:06,231 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:06,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:36:06,232 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:06,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:06,232 INFO L85 PathProgramCache]: Analyzing trace with hash 124818474, now seen corresponding path program 1 times [2023-11-29 04:36:06,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:06,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604409277] [2023-11-29 04:36:06,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:06,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:06,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:06,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604409277] [2023-11-29 04:36:06,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604409277] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:06,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146671300] [2023-11-29 04:36:06,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:06,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:06,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:06,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:06,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:36:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:06,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:36:06,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:06,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:36:06,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146671300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:06,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:36:06,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 04:36:06,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620073109] [2023-11-29 04:36:06,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:06,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:36:06,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:06,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:36:06,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:36:06,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 04:36:06,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 56 transitions, 271 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:06,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:06,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 04:36:06,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:06,889 INFO L124 PetriNetUnfolderBase]: 1453/2648 cut-off events. [2023-11-29 04:36:06,889 INFO L125 PetriNetUnfolderBase]: For 4578/4994 co-relation queries the response was YES. [2023-11-29 04:36:06,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8520 conditions, 2648 events. 1453/2648 cut-off events. For 4578/4994 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 17601 event pairs, 311 based on Foata normal form. 134/2677 useless extension candidates. Maximal degree in co-relation 8484. Up to 1048 conditions per place. [2023-11-29 04:36:06,914 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 84 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2023-11-29 04:36:06,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 107 transitions, 695 flow [2023-11-29 04:36:06,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:36:06,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:36:06,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2023-11-29 04:36:06,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2023-11-29 04:36:06,916 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 182 transitions. [2023-11-29 04:36:06,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 182 transitions. [2023-11-29 04:36:06,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:06,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 182 transitions. [2023-11-29 04:36:06,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:06,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:06,919 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:06,919 INFO L175 Difference]: Start difference. First operand has 74 places, 56 transitions, 271 flow. Second operand 6 states and 182 transitions. [2023-11-29 04:36:06,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 107 transitions, 695 flow [2023-11-29 04:36:06,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 686 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:36:06,928 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 268 flow [2023-11-29 04:36:06,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2023-11-29 04:36:06,929 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 29 predicate places. [2023-11-29 04:36:06,929 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 268 flow [2023-11-29 04:36:06,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:06,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:06,930 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:06,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:36:07,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 04:36:07,134 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:07,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:07,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1592783038, now seen corresponding path program 1 times [2023-11-29 04:36:07,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:07,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765670889] [2023-11-29 04:36:07,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:07,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:07,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:07,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:07,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765670889] [2023-11-29 04:36:07,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765670889] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:07,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629475609] [2023-11-29 04:36:07,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:07,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:07,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:07,216 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:07,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:36:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:07,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:36:07,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:07,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:36:07,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629475609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:07,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:36:07,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-29 04:36:07,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409375165] [2023-11-29 04:36:07,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:07,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:36:07,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:07,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:36:07,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:36:07,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2023-11-29 04:36:07,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:07,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:07,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2023-11-29 04:36:07,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:07,706 INFO L124 PetriNetUnfolderBase]: 1083/2400 cut-off events. [2023-11-29 04:36:07,706 INFO L125 PetriNetUnfolderBase]: For 4204/4383 co-relation queries the response was YES. [2023-11-29 04:36:07,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7131 conditions, 2400 events. 1083/2400 cut-off events. For 4204/4383 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17853 event pairs, 187 based on Foata normal form. 119/2436 useless extension candidates. Maximal degree in co-relation 7096. Up to 1216 conditions per place. [2023-11-29 04:36:07,724 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 54 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-11-29 04:36:07,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 513 flow [2023-11-29 04:36:07,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:36:07,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:36:07,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2023-11-29 04:36:07,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2023-11-29 04:36:07,726 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 120 transitions. [2023-11-29 04:36:07,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 120 transitions. [2023-11-29 04:36:07,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:07,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 120 transitions. [2023-11-29 04:36:07,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:07,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:07,727 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:07,727 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 268 flow. Second operand 4 states and 120 transitions. [2023-11-29 04:36:07,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 513 flow [2023-11-29 04:36:07,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 76 transitions, 507 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:36:07,733 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 263 flow [2023-11-29 04:36:07,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2023-11-29 04:36:07,734 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2023-11-29 04:36:07,734 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 263 flow [2023-11-29 04:36:07,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:07,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:07,735 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:07,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:36:07,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 04:36:07,936 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:07,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:07,936 INFO L85 PathProgramCache]: Analyzing trace with hash -425594268, now seen corresponding path program 1 times [2023-11-29 04:36:07,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:07,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990118394] [2023-11-29 04:36:07,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:07,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:36:07,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:07,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990118394] [2023-11-29 04:36:07,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990118394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:07,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:36:07,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:36:07,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524611895] [2023-11-29 04:36:07,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:07,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:36:07,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:07,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:36:07,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:36:07,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-29 04:36:07,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:07,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:07,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-29 04:36:07,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:08,340 INFO L124 PetriNetUnfolderBase]: 1611/2891 cut-off events. [2023-11-29 04:36:08,341 INFO L125 PetriNetUnfolderBase]: For 5103/5472 co-relation queries the response was YES. [2023-11-29 04:36:08,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9388 conditions, 2891 events. 1611/2891 cut-off events. For 5103/5472 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 19056 event pairs, 781 based on Foata normal form. 139/2980 useless extension candidates. Maximal degree in co-relation 9353. Up to 1547 conditions per place. [2023-11-29 04:36:08,373 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 68 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2023-11-29 04:36:08,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 90 transitions, 589 flow [2023-11-29 04:36:08,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:36:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:36:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2023-11-29 04:36:08,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2023-11-29 04:36:08,375 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 124 transitions. [2023-11-29 04:36:08,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 124 transitions. [2023-11-29 04:36:08,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:08,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 124 transitions. [2023-11-29 04:36:08,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:08,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:08,377 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:08,377 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 263 flow. Second operand 4 states and 124 transitions. [2023-11-29 04:36:08,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 90 transitions, 589 flow [2023-11-29 04:36:08,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 90 transitions, 580 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 04:36:08,384 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 272 flow [2023-11-29 04:36:08,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2023-11-29 04:36:08,385 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2023-11-29 04:36:08,385 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 272 flow [2023-11-29 04:36:08,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:08,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:08,386 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:08,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 04:36:08,386 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)] === [2023-11-29 04:36:08,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:08,386 INFO L85 PathProgramCache]: Analyzing trace with hash -2131633635, now seen corresponding path program 1 times [2023-11-29 04:36:08,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:08,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42912818] [2023-11-29 04:36:08,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:08,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:08,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:08,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42912818] [2023-11-29 04:36:08,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42912818] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:08,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691947510] [2023-11-29 04:36:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:08,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:08,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:08,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:08,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:36:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:08,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:36:08,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:08,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:08,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:36:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:08,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691947510] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:36:08,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:36:08,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-29 04:36:08,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659909079] [2023-11-29 04:36:08,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:36:08,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:36:08,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:08,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:36:08,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:36:08,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 04:36:08,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 272 flow. Second operand has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:08,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:08,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 04:36:08,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:09,436 INFO L124 PetriNetUnfolderBase]: 2907/6187 cut-off events. [2023-11-29 04:36:09,436 INFO L125 PetriNetUnfolderBase]: For 12171/12623 co-relation queries the response was YES. [2023-11-29 04:36:09,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18283 conditions, 6187 events. 2907/6187 cut-off events. For 12171/12623 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 50823 event pairs, 187 based on Foata normal form. 370/6492 useless extension candidates. Maximal degree in co-relation 18248. Up to 1217 conditions per place. [2023-11-29 04:36:09,473 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 129 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2023-11-29 04:36:09,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 153 transitions, 1134 flow [2023-11-29 04:36:09,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:36:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:36:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2023-11-29 04:36:09,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7840909090909091 [2023-11-29 04:36:09,475 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 207 transitions. [2023-11-29 04:36:09,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 207 transitions. [2023-11-29 04:36:09,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:09,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 207 transitions. [2023-11-29 04:36:09,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:09,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:09,477 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:09,477 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 272 flow. Second operand 6 states and 207 transitions. [2023-11-29 04:36:09,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 153 transitions, 1134 flow [2023-11-29 04:36:09,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 153 transitions, 1118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:36:09,490 INFO L231 Difference]: Finished difference. Result has 80 places, 57 transitions, 300 flow [2023-11-29 04:36:09,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=80, PETRI_TRANSITIONS=57} [2023-11-29 04:36:09,490 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2023-11-29 04:36:09,491 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 57 transitions, 300 flow [2023-11-29 04:36:09,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:09,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:09,491 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:09,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:36:09,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 04:36:09,694 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:09,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:09,694 INFO L85 PathProgramCache]: Analyzing trace with hash -47291238, now seen corresponding path program 1 times [2023-11-29 04:36:09,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:09,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112543482] [2023-11-29 04:36:09,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:09,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:09,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:09,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112543482] [2023-11-29 04:36:09,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112543482] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:09,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917311256] [2023-11-29 04:36:09,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:09,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:09,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:09,775 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:09,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:36:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:09,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:36:09,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:09,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:36:09,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917311256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:09,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:36:09,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 04:36:09,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735249524] [2023-11-29 04:36:09,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:09,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:36:09,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:09,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:36:09,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:36:09,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 04:36:09,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 57 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:09,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:09,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 04:36:09,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:10,729 INFO L124 PetriNetUnfolderBase]: 3691/6634 cut-off events. [2023-11-29 04:36:10,729 INFO L125 PetriNetUnfolderBase]: For 14336/14750 co-relation queries the response was YES. [2023-11-29 04:36:10,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22157 conditions, 6634 events. 3691/6634 cut-off events. For 14336/14750 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 48625 event pairs, 815 based on Foata normal form. 162/6562 useless extension candidates. Maximal degree in co-relation 22118. Up to 2628 conditions per place. [2023-11-29 04:36:10,770 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2023-11-29 04:36:10,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 111 transitions, 812 flow [2023-11-29 04:36:10,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:36:10,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:36:10,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2023-11-29 04:36:10,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 04:36:10,772 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 176 transitions. [2023-11-29 04:36:10,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 176 transitions. [2023-11-29 04:36:10,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:10,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 176 transitions. [2023-11-29 04:36:10,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:10,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:10,773 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:10,774 INFO L175 Difference]: Start difference. First operand has 80 places, 57 transitions, 300 flow. Second operand 6 states and 176 transitions. [2023-11-29 04:36:10,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 111 transitions, 812 flow [2023-11-29 04:36:10,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 111 transitions, 770 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-29 04:36:10,786 INFO L231 Difference]: Finished difference. Result has 82 places, 56 transitions, 294 flow [2023-11-29 04:36:10,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=82, PETRI_TRANSITIONS=56} [2023-11-29 04:36:10,786 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2023-11-29 04:36:10,786 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 56 transitions, 294 flow [2023-11-29 04:36:10,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:10,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:10,787 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:10,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:36:10,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 04:36:10,987 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:10,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:10,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1656132935, now seen corresponding path program 1 times [2023-11-29 04:36:10,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:10,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897120576] [2023-11-29 04:36:10,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:10,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:11,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:11,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:11,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897120576] [2023-11-29 04:36:11,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897120576] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:11,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738796160] [2023-11-29 04:36:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:11,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:11,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:11,058 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:11,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:36:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:11,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:36:11,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:11,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:36:11,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738796160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:11,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:36:11,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 04:36:11,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034933670] [2023-11-29 04:36:11,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:11,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:36:11,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:11,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:36:11,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:36:11,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 04:36:11,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 56 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:11,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:11,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 04:36:11,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:11,846 INFO L124 PetriNetUnfolderBase]: 3819/6572 cut-off events. [2023-11-29 04:36:11,846 INFO L125 PetriNetUnfolderBase]: For 15033/15240 co-relation queries the response was YES. [2023-11-29 04:36:11,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22487 conditions, 6572 events. 3819/6572 cut-off events. For 15033/15240 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 45250 event pairs, 1663 based on Foata normal form. 228/6431 useless extension candidates. Maximal degree in co-relation 22448. Up to 3155 conditions per place. [2023-11-29 04:36:11,883 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 53 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2023-11-29 04:36:11,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 77 transitions, 553 flow [2023-11-29 04:36:11,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:36:11,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:36:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2023-11-29 04:36:11,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6420454545454546 [2023-11-29 04:36:11,884 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 113 transitions. [2023-11-29 04:36:11,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 113 transitions. [2023-11-29 04:36:11,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:11,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 113 transitions. [2023-11-29 04:36:11,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:11,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:11,885 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:11,885 INFO L175 Difference]: Start difference. First operand has 82 places, 56 transitions, 294 flow. Second operand 4 states and 113 transitions. [2023-11-29 04:36:11,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 77 transitions, 553 flow [2023-11-29 04:36:11,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 77 transitions, 547 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:36:11,905 INFO L231 Difference]: Finished difference. Result has 81 places, 55 transitions, 301 flow [2023-11-29 04:36:11,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=81, PETRI_TRANSITIONS=55} [2023-11-29 04:36:11,906 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2023-11-29 04:36:11,906 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 55 transitions, 301 flow [2023-11-29 04:36:11,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:11,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:11,907 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:11,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:36:12,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 04:36:12,107 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:12,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:12,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1817270937, now seen corresponding path program 1 times [2023-11-29 04:36:12,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:12,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895751173] [2023-11-29 04:36:12,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:12,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:12,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:12,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895751173] [2023-11-29 04:36:12,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895751173] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:12,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026638530] [2023-11-29 04:36:12,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:12,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:12,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:12,184 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:12,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:36:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:12,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:36:12,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:12,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:36:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:12,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026638530] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:36:12,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:36:12,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-11-29 04:36:12,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720435138] [2023-11-29 04:36:12,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:36:12,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:36:12,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:12,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:36:12,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:36:12,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 04:36:12,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 55 transitions, 301 flow. Second operand has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:12,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:12,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 04:36:12,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:15,594 INFO L124 PetriNetUnfolderBase]: 11247/21496 cut-off events. [2023-11-29 04:36:15,595 INFO L125 PetriNetUnfolderBase]: For 61176/62265 co-relation queries the response was YES. [2023-11-29 04:36:15,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76622 conditions, 21496 events. 11247/21496 cut-off events. For 61176/62265 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 192015 event pairs, 341 based on Foata normal form. 1442/22881 useless extension candidates. Maximal degree in co-relation 76581. Up to 4201 conditions per place. [2023-11-29 04:36:15,799 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 393 selfloop transitions, 71 changer transitions 0/480 dead transitions. [2023-11-29 04:36:15,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 480 transitions, 3831 flow [2023-11-29 04:36:15,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 04:36:15,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 04:36:15,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 905 transitions. [2023-11-29 04:36:15,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.734577922077922 [2023-11-29 04:36:15,803 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 905 transitions. [2023-11-29 04:36:15,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 905 transitions. [2023-11-29 04:36:15,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:15,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 905 transitions. [2023-11-29 04:36:15,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 32.32142857142857) internal successors, (905), 28 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:15,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 44.0) internal successors, (1276), 29 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:15,809 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 44.0) internal successors, (1276), 29 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:15,809 INFO L175 Difference]: Start difference. First operand has 81 places, 55 transitions, 301 flow. Second operand 28 states and 905 transitions. [2023-11-29 04:36:15,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 480 transitions, 3831 flow [2023-11-29 04:36:15,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 480 transitions, 3479 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:36:15,861 INFO L231 Difference]: Finished difference. Result has 121 places, 127 transitions, 1213 flow [2023-11-29 04:36:15,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1213, PETRI_PLACES=121, PETRI_TRANSITIONS=127} [2023-11-29 04:36:15,862 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 75 predicate places. [2023-11-29 04:36:15,862 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 127 transitions, 1213 flow [2023-11-29 04:36:15,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:15,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:15,862 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:15,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 04:36:16,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 04:36:16,063 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:16,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:16,063 INFO L85 PathProgramCache]: Analyzing trace with hash 872094804, now seen corresponding path program 1 times [2023-11-29 04:36:16,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:16,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69072281] [2023-11-29 04:36:16,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:16,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:16,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:16,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:16,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69072281] [2023-11-29 04:36:16,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69072281] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:16,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623995555] [2023-11-29 04:36:16,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:16,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:16,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:16,137 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:16,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:36:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:16,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:36:16,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:16,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:36:16,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623995555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:16,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:36:16,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-11-29 04:36:16,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389843250] [2023-11-29 04:36:16,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:16,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:36:16,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:16,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:36:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:36:16,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 04:36:16,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 127 transitions, 1213 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:16,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:16,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 04:36:16,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:18,767 INFO L124 PetriNetUnfolderBase]: 9393/18472 cut-off events. [2023-11-29 04:36:18,767 INFO L125 PetriNetUnfolderBase]: For 195866/196888 co-relation queries the response was YES. [2023-11-29 04:36:18,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77821 conditions, 18472 events. 9393/18472 cut-off events. For 195866/196888 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 164975 event pairs, 1631 based on Foata normal form. 1656/19951 useless extension candidates. Maximal degree in co-relation 77762. Up to 6826 conditions per place. [2023-11-29 04:36:18,943 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 88 selfloop transitions, 27 changer transitions 0/131 dead transitions. [2023-11-29 04:36:18,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 131 transitions, 1336 flow [2023-11-29 04:36:18,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:36:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:36:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2023-11-29 04:36:18,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6553030303030303 [2023-11-29 04:36:18,945 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 173 transitions. [2023-11-29 04:36:18,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 173 transitions. [2023-11-29 04:36:18,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:18,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 173 transitions. [2023-11-29 04:36:18,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:18,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:18,947 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:18,947 INFO L175 Difference]: Start difference. First operand has 121 places, 127 transitions, 1213 flow. Second operand 6 states and 173 transitions. [2023-11-29 04:36:18,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 131 transitions, 1336 flow [2023-11-29 04:36:19,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 131 transitions, 1087 flow, removed 99 selfloop flow, removed 13 redundant places. [2023-11-29 04:36:19,873 INFO L231 Difference]: Finished difference. Result has 109 places, 95 transitions, 682 flow [2023-11-29 04:36:19,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=682, PETRI_PLACES=109, PETRI_TRANSITIONS=95} [2023-11-29 04:36:19,874 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2023-11-29 04:36:19,874 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 95 transitions, 682 flow [2023-11-29 04:36:19,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:19,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:19,874 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:19,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:36:20,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 04:36:20,075 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:20,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:20,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1466028033, now seen corresponding path program 1 times [2023-11-29 04:36:20,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:20,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964999241] [2023-11-29 04:36:20,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:20,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:36:20,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:20,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964999241] [2023-11-29 04:36:20,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964999241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:20,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:36:20,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:36:20,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026675728] [2023-11-29 04:36:20,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:20,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:36:20,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:20,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:36:20,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:36:20,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-29 04:36:20,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 95 transitions, 682 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:20,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:20,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-29 04:36:20,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:23,252 INFO L124 PetriNetUnfolderBase]: 14883/25342 cut-off events. [2023-11-29 04:36:23,252 INFO L125 PetriNetUnfolderBase]: For 158181/159246 co-relation queries the response was YES. [2023-11-29 04:36:23,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98669 conditions, 25342 events. 14883/25342 cut-off events. For 158181/159246 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 210728 event pairs, 5592 based on Foata normal form. 864/25540 useless extension candidates. Maximal degree in co-relation 98618. Up to 11443 conditions per place. [2023-11-29 04:36:23,541 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 145 selfloop transitions, 6 changer transitions 0/165 dead transitions. [2023-11-29 04:36:23,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 165 transitions, 1486 flow [2023-11-29 04:36:23,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:36:23,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:36:23,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2023-11-29 04:36:23,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2023-11-29 04:36:23,542 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 116 transitions. [2023-11-29 04:36:23,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 116 transitions. [2023-11-29 04:36:23,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:23,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 116 transitions. [2023-11-29 04:36:23,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:23,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:23,544 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:23,544 INFO L175 Difference]: Start difference. First operand has 109 places, 95 transitions, 682 flow. Second operand 4 states and 116 transitions. [2023-11-29 04:36:23,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 165 transitions, 1486 flow [2023-11-29 04:36:23,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 165 transitions, 1457 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-29 04:36:23,853 INFO L231 Difference]: Finished difference. Result has 108 places, 95 transitions, 681 flow [2023-11-29 04:36:23,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=681, PETRI_PLACES=108, PETRI_TRANSITIONS=95} [2023-11-29 04:36:23,853 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2023-11-29 04:36:23,853 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 95 transitions, 681 flow [2023-11-29 04:36:23,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:23,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:23,853 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:23,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 04:36:23,854 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:23,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:23,854 INFO L85 PathProgramCache]: Analyzing trace with hash 199486861, now seen corresponding path program 1 times [2023-11-29 04:36:23,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:23,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637888902] [2023-11-29 04:36:23,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:23,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:36:23,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:23,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637888902] [2023-11-29 04:36:23,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637888902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:23,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:36:23,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:36:23,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787651864] [2023-11-29 04:36:23,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:23,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:36:23,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:23,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:36:23,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:36:23,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 04:36:23,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 95 transitions, 681 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:23,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:23,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 04:36:23,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:26,319 INFO L124 PetriNetUnfolderBase]: 11993/21452 cut-off events. [2023-11-29 04:36:26,319 INFO L125 PetriNetUnfolderBase]: For 186734/186734 co-relation queries the response was YES. [2023-11-29 04:36:26,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85452 conditions, 21452 events. 11993/21452 cut-off events. For 186734/186734 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 180412 event pairs, 2570 based on Foata normal form. 0/21083 useless extension candidates. Maximal degree in co-relation 85402. Up to 9373 conditions per place. [2023-11-29 04:36:26,607 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 194 selfloop transitions, 9 changer transitions 0/219 dead transitions. [2023-11-29 04:36:26,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 219 transitions, 2147 flow [2023-11-29 04:36:26,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:36:26,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:36:26,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2023-11-29 04:36:26,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761363636363636 [2023-11-29 04:36:26,609 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 119 transitions. [2023-11-29 04:36:26,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 119 transitions. [2023-11-29 04:36:26,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:26,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 119 transitions. [2023-11-29 04:36:26,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:26,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:26,610 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:26,611 INFO L175 Difference]: Start difference. First operand has 108 places, 95 transitions, 681 flow. Second operand 4 states and 119 transitions. [2023-11-29 04:36:26,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 219 transitions, 2147 flow [2023-11-29 04:36:26,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 219 transitions, 2135 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:36:26,820 INFO L231 Difference]: Finished difference. Result has 109 places, 95 transitions, 695 flow [2023-11-29 04:36:26,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=695, PETRI_PLACES=109, PETRI_TRANSITIONS=95} [2023-11-29 04:36:26,821 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2023-11-29 04:36:26,821 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 95 transitions, 695 flow [2023-11-29 04:36:26,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:26,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:26,822 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:26,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 04:36:26,822 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:26,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:26,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1835742971, now seen corresponding path program 1 times [2023-11-29 04:36:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:26,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046748779] [2023-11-29 04:36:26,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:26,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:26,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:26,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046748779] [2023-11-29 04:36:26,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046748779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:26,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168702949] [2023-11-29 04:36:26,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:26,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:26,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:26,926 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:26,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:36:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:27,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:36:27,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:27,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:36:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:27,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168702949] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:36:27,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:36:27,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-29 04:36:27,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025166104] [2023-11-29 04:36:27,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:36:27,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 04:36:27,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:27,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 04:36:27,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:36:27,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 04:36:27,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 95 transitions, 695 flow. Second operand has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:27,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:27,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 04:36:27,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:31,055 INFO L124 PetriNetUnfolderBase]: 13285/25710 cut-off events. [2023-11-29 04:36:31,055 INFO L125 PetriNetUnfolderBase]: For 259938/259938 co-relation queries the response was YES. [2023-11-29 04:36:31,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105653 conditions, 25710 events. 13285/25710 cut-off events. For 259938/259938 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 235901 event pairs, 539 based on Foata normal form. 908/26435 useless extension candidates. Maximal degree in co-relation 105599. Up to 7399 conditions per place. [2023-11-29 04:36:31,257 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 304 selfloop transitions, 54 changer transitions 0/374 dead transitions. [2023-11-29 04:36:31,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 374 transitions, 3182 flow [2023-11-29 04:36:31,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 04:36:31,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 04:36:31,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 652 transitions. [2023-11-29 04:36:31,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7056277056277056 [2023-11-29 04:36:31,260 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 652 transitions. [2023-11-29 04:36:31,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 652 transitions. [2023-11-29 04:36:31,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:31,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 652 transitions. [2023-11-29 04:36:31,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 31.047619047619047) internal successors, (652), 21 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:31,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 44.0) internal successors, (968), 22 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:31,264 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 44.0) internal successors, (968), 22 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:31,264 INFO L175 Difference]: Start difference. First operand has 109 places, 95 transitions, 695 flow. Second operand 21 states and 652 transitions. [2023-11-29 04:36:31,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 374 transitions, 3182 flow [2023-11-29 04:36:31,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 374 transitions, 2962 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-29 04:36:31,755 INFO L231 Difference]: Finished difference. Result has 132 places, 116 transitions, 1083 flow [2023-11-29 04:36:31,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1083, PETRI_PLACES=132, PETRI_TRANSITIONS=116} [2023-11-29 04:36:31,756 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 86 predicate places. [2023-11-29 04:36:31,756 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 116 transitions, 1083 flow [2023-11-29 04:36:31,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:31,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:31,756 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:31,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 04:36:31,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 04:36:31,957 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:31,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:31,957 INFO L85 PathProgramCache]: Analyzing trace with hash 785185942, now seen corresponding path program 1 times [2023-11-29 04:36:31,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:31,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033478362] [2023-11-29 04:36:31,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:31,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:32,056 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:32,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:32,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033478362] [2023-11-29 04:36:32,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033478362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:32,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110377282] [2023-11-29 04:36:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:32,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:32,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:32,058 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:32,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:36:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:32,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:36:32,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:32,284 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:32,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:36:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:32,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110377282] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:36:32,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:36:32,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-11-29 04:36:32,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826283212] [2023-11-29 04:36:32,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:36:32,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 04:36:32,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:32,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 04:36:32,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2023-11-29 04:36:32,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 04:36:32,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 116 transitions, 1083 flow. Second operand has 20 states, 20 states have (on average 22.45) internal successors, (449), 20 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) [2023-11-29 04:36:32,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:32,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 04:36:32,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:40,213 INFO L124 PetriNetUnfolderBase]: 25129/48768 cut-off events. [2023-11-29 04:36:40,214 INFO L125 PetriNetUnfolderBase]: For 904612/904612 co-relation queries the response was YES. [2023-11-29 04:36:40,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201204 conditions, 48768 events. 25129/48768 cut-off events. For 904612/904612 co-relation queries the response was YES. Maximal size of possible extension queue 1411. Compared 482804 event pairs, 1241 based on Foata normal form. 2988/51555 useless extension candidates. Maximal degree in co-relation 201142. Up to 6607 conditions per place. [2023-11-29 04:36:40,796 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 521 selfloop transitions, 118 changer transitions 0/655 dead transitions. [2023-11-29 04:36:40,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 655 transitions, 5629 flow [2023-11-29 04:36:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 04:36:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-29 04:36:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1159 transitions. [2023-11-29 04:36:40,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.711916461916462 [2023-11-29 04:36:40,799 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1159 transitions. [2023-11-29 04:36:40,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1159 transitions. [2023-11-29 04:36:40,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:40,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1159 transitions. [2023-11-29 04:36:40,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 31.324324324324323) internal successors, (1159), 37 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:40,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 44.0) internal successors, (1672), 38 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:40,803 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 44.0) internal successors, (1672), 38 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:40,803 INFO L175 Difference]: Start difference. First operand has 132 places, 116 transitions, 1083 flow. Second operand 37 states and 1159 transitions. [2023-11-29 04:36:40,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 655 transitions, 5629 flow [2023-11-29 04:36:42,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 655 transitions, 5487 flow, removed 50 selfloop flow, removed 13 redundant places. [2023-11-29 04:36:42,261 INFO L231 Difference]: Finished difference. Result has 169 places, 174 transitions, 2082 flow [2023-11-29 04:36:42,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2082, PETRI_PLACES=169, PETRI_TRANSITIONS=174} [2023-11-29 04:36:42,261 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 123 predicate places. [2023-11-29 04:36:42,261 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 174 transitions, 2082 flow [2023-11-29 04:36:42,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 22.45) internal successors, (449), 20 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) [2023-11-29 04:36:42,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:42,262 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:42,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:36:42,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:42,462 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:36:42,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:42,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1410244219, now seen corresponding path program 2 times [2023-11-29 04:36:42,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:42,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831085648] [2023-11-29 04:36:42,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:42,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:42,612 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:42,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:42,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831085648] [2023-11-29 04:36:42,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831085648] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:42,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416971688] [2023-11-29 04:36:42,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:36:42,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:42,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:42,614 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:42,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:36:42,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:36:42,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:36:42,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:36:42,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:42,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:36:42,966 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:36:42,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416971688] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:36:42,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:36:42,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-29 04:36:42,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750728673] [2023-11-29 04:36:42,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:36:42,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 04:36:42,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:42,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 04:36:42,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:36:42,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 04:36:42,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 174 transitions, 2082 flow. Second operand has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:42,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:42,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 04:36:42,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:37:07,578 INFO L124 PetriNetUnfolderBase]: 75277/135471 cut-off events. [2023-11-29 04:37:07,578 INFO L125 PetriNetUnfolderBase]: For 3011572/3011572 co-relation queries the response was YES. [2023-11-29 04:37:08,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641406 conditions, 135471 events. 75277/135471 cut-off events. For 3011572/3011572 co-relation queries the response was YES. Maximal size of possible extension queue 2065. Compared 1366133 event pairs, 2709 based on Foata normal form. 4188/139417 useless extension candidates. Maximal degree in co-relation 641330. Up to 16321 conditions per place. [2023-11-29 04:37:09,395 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 1599 selfloop transitions, 11 changer transitions 0/1626 dead transitions. [2023-11-29 04:37:09,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 1626 transitions, 24678 flow [2023-11-29 04:37:09,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:37:09,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 04:37:09,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 403 transitions. [2023-11-29 04:37:09,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7632575757575758 [2023-11-29 04:37:09,396 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 403 transitions. [2023-11-29 04:37:09,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 403 transitions. [2023-11-29 04:37:09,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:37:09,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 403 transitions. [2023-11-29 04:37:09,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 33.583333333333336) internal successors, (403), 12 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:09,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 44.0) internal successors, (572), 13 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:09,398 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 44.0) internal successors, (572), 13 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:09,398 INFO L175 Difference]: Start difference. First operand has 169 places, 174 transitions, 2082 flow. Second operand 12 states and 403 transitions. [2023-11-29 04:37:09,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 1626 transitions, 24678 flow [2023-11-29 04:37:12,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 1626 transitions, 21615 flow, removed 1331 selfloop flow, removed 13 redundant places. [2023-11-29 04:37:12,519 INFO L231 Difference]: Finished difference. Result has 173 places, 180 transitions, 1871 flow [2023-11-29 04:37:12,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1871, PETRI_PLACES=173, PETRI_TRANSITIONS=180} [2023-11-29 04:37:12,520 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 127 predicate places. [2023-11-29 04:37:12,520 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 180 transitions, 1871 flow [2023-11-29 04:37:12,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:12,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:37:12,521 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:37:12,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 04:37:12,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:37:12,721 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:37:12,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:37:12,722 INFO L85 PathProgramCache]: Analyzing trace with hash 937335495, now seen corresponding path program 2 times [2023-11-29 04:37:12,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:37:12,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972619286] [2023-11-29 04:37:12,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:37:12,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:37:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:37:12,815 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:37:12,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:37:12,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972619286] [2023-11-29 04:37:12,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972619286] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:37:12,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211359505] [2023-11-29 04:37:12,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:37:12,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:37:12,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:12,817 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:37:12,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:37:12,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:37:12,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:37:12,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:37:12,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:37:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:37:13,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:37:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:37:13,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211359505] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:37:13,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:37:13,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-11-29 04:37:13,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385039662] [2023-11-29 04:37:13,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:37:13,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 04:37:13,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:37:13,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 04:37:13,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2023-11-29 04:37:13,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 04:37:13,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 180 transitions, 1871 flow. Second operand has 23 states, 23 states have (on average 22.391304347826086) internal successors, (515), 23 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:13,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:37:13,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 04:37:13,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:37:50,369 INFO L124 PetriNetUnfolderBase]: 102673/199704 cut-off events. [2023-11-29 04:37:50,369 INFO L125 PetriNetUnfolderBase]: For 4753848/4753848 co-relation queries the response was YES. [2023-11-29 04:37:52,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 863973 conditions, 199704 events. 102673/199704 cut-off events. For 4753848/4753848 co-relation queries the response was YES. Maximal size of possible extension queue 3383. Compared 2285952 event pairs, 4997 based on Foata normal form. 4414/203569 useless extension candidates. Maximal degree in co-relation 863891. Up to 31519 conditions per place. [2023-11-29 04:37:53,080 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 701 selfloop transitions, 204 changer transitions 0/921 dead transitions. [2023-11-29 04:37:53,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 921 transitions, 9084 flow [2023-11-29 04:37:53,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-29 04:37:53,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-29 04:37:53,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1069 transitions. [2023-11-29 04:37:53,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.714572192513369 [2023-11-29 04:37:53,083 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1069 transitions. [2023-11-29 04:37:53,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1069 transitions. [2023-11-29 04:37:53,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:37:53,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1069 transitions. [2023-11-29 04:37:53,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 31.441176470588236) internal successors, (1069), 34 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:53,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 44.0) internal successors, (1540), 35 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:53,089 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 44.0) internal successors, (1540), 35 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:53,089 INFO L175 Difference]: Start difference. First operand has 173 places, 180 transitions, 1871 flow. Second operand 34 states and 1069 transitions. [2023-11-29 04:37:53,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 921 transitions, 9084 flow [2023-11-29 04:38:29,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 921 transitions, 8400 flow, removed 217 selfloop flow, removed 5 redundant places. [2023-11-29 04:38:29,837 INFO L231 Difference]: Finished difference. Result has 210 places, 283 transitions, 3765 flow [2023-11-29 04:38:29,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3765, PETRI_PLACES=210, PETRI_TRANSITIONS=283} [2023-11-29 04:38:29,838 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 164 predicate places. [2023-11-29 04:38:29,838 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 283 transitions, 3765 flow [2023-11-29 04:38:29,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 22.391304347826086) internal successors, (515), 23 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:29,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:29,839 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:29,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 04:38:30,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 04:38:30,039 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 04:38:30,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:30,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2031226806, now seen corresponding path program 2 times [2023-11-29 04:38:30,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:30,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978665878] [2023-11-29 04:38:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:30,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:38:30,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:30,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978665878] [2023-11-29 04:38:30,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978665878] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:38:30,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549858428] [2023-11-29 04:38:30,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:38:30,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:30,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:30,171 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:30,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5330b5ab-da9a-4e4c-b5e2-ac58b3b07605/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 04:38:30,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:38:30,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:38:30,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:38:30,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:30,459 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:38:30,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:38:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:38:30,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549858428] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:38:30,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:38:30,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-11-29 04:38:30,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467930649] [2023-11-29 04:38:30,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:38:30,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 04:38:30,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:30,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 04:38:30,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-11-29 04:38:30,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 04:38:30,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 283 transitions, 3765 flow. Second operand has 26 states, 26 states have (on average 22.346153846153847) internal successors, (581), 26 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:30,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:30,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 04:38:30,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand