./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/triangular-longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx --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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:17:52,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:17:52,270 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-21 22:17:52,276 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:17:52,277 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:17:52,302 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:17:52,302 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:17:52,303 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:17:52,304 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:17:52,304 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:17:52,305 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:17:52,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:17:52,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:17:52,307 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:17:52,308 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:17:52,309 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:17:52,309 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:17:52,310 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:17:52,310 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:17:52,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:17:52,312 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:17:52,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:17:52,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:17:52,313 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:17:52,314 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:17:52,315 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:17:52,315 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:17:52,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:17:52,316 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:17:52,317 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:17:52,317 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:17:52,318 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:17:52,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:17:52,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:17:52,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:17:52,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:17:52,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:17:52,336 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:17:52,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:17:52,336 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:17:52,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:17:52,337 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:17:52,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:17:52,338 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:17:52,338 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_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2023-11-21 22:17:52,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:17:52,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:17:52,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:17:52,691 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:17:52,691 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:17:52,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread/triangular-longest-1.i [2023-11-21 22:17:55,807 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:17:56,225 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:17:56,226 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/sv-benchmarks/c/pthread/triangular-longest-1.i [2023-11-21 22:17:56,247 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/data/7abf1694d/7b6670ea51b14b8d916d46183feb9620/FLAG7747b693f [2023-11-21 22:17:56,265 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/data/7abf1694d/7b6670ea51b14b8d916d46183feb9620 [2023-11-21 22:17:56,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:17:56,274 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:17:56,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:17:56,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:17:56,283 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:17:56,284 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:17:56" (1/1) ... [2023-11-21 22:17:56,285 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f4dba2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:56, skipping insertion in model container [2023-11-21 22:17:56,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:17:56" (1/1) ... [2023-11-21 22:17:56,346 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:17:56,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:17:56,697 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:17:56,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:17:56,819 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:17:56,819 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:17:56,827 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:17:56,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:56 WrapperNode [2023-11-21 22:17:56,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:17:56,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:17:56,829 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:17:56,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:17:56,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:56" (1/1) ... [2023-11-21 22:17:56,865 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:56" (1/1) ... [2023-11-21 22:17:56,888 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-21 22:17:56,889 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:17:56,889 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:17:56,890 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:17:56,890 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:17:56,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:56" (1/1) ... [2023-11-21 22:17:56,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:56" (1/1) ... [2023-11-21 22:17:56,914 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:56" (1/1) ... [2023-11-21 22:17:56,934 INFO L187 HeapSplitter]: Split 4 memory accesses to 3 slices as follows [2, 1, 1] [2023-11-21 22:17:56,935 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:56" (1/1) ... [2023-11-21 22:17:56,935 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:56" (1/1) ... [2023-11-21 22:17:56,957 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:56" (1/1) ... [2023-11-21 22:17:56,961 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:56" (1/1) ... [2023-11-21 22:17:56,962 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:56" (1/1) ... [2023-11-21 22:17:56,964 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:56" (1/1) ... [2023-11-21 22:17:56,967 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:17:56,967 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:17:56,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:17:56,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:17:56,968 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:56" (1/1) ... [2023-11-21 22:17:56,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:17:57,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:57,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:17:57,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:17:57,063 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-21 22:17:57,064 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-21 22:17:57,064 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-21 22:17:57,064 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-21 22:17:57,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:17:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:17:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:17:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:17:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:17:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:17:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:17:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:17:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:17:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:17:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:17:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:17:57,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:17:57,069 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:17:57,206 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:17:57,208 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:17:57,373 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:17:57,538 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:17:57,538 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 22:17:57,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:17:57 BoogieIcfgContainer [2023-11-21 22:17:57,540 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:17:57,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:17:57,543 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:17:57,546 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:17:57,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:17:56" (1/3) ... [2023-11-21 22:17:57,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596ad959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:17:57, skipping insertion in model container [2023-11-21 22:17:57,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:56" (2/3) ... [2023-11-21 22:17:57,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596ad959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:17:57, skipping insertion in model container [2023-11-21 22:17:57,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:17:57" (3/3) ... [2023-11-21 22:17:57,549 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2023-11-21 22:17:57,559 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:17:57,570 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:17:57,570 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-21 22:17:57,571 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:17:57,675 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:17:57,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 72 flow [2023-11-21 22:17:57,747 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2023-11-21 22:17:57,747 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:17:57,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 2/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-21 22:17:57,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 72 flow [2023-11-21 22:17:57,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 66 flow [2023-11-21 22:17:57,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:17:57,800 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;@4ff3406b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:17:57,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-21 22:17:57,815 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:17:57,815 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-21 22:17:57,815 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:17:57,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:57,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:17:57,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:17:57,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:57,829 INFO L85 PathProgramCache]: Analyzing trace with hash 223253781, now seen corresponding path program 1 times [2023-11-21 22:17:57,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:57,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133257395] [2023-11-21 22:17:57,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:57,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:58,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:58,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133257395] [2023-11-21 22:17:58,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133257395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:58,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:58,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:17:58,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869081931] [2023-11-21 22:17:58,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:58,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:17:58,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:58,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:17:58,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:17:58,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-21 22:17:58,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:58,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:58,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-21 22:17:58,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:58,498 INFO L124 PetriNetUnfolderBase]: 288/572 cut-off events. [2023-11-21 22:17:58,498 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:17:58,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 572 events. 288/572 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3048 event pairs, 118 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 1045. Up to 241 conditions per place. [2023-11-21 22:17:58,515 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 27 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-11-21 22:17:58,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 150 flow [2023-11-21 22:17:58,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:17:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:17:58,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2023-11-21 22:17:58,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7604166666666666 [2023-11-21 22:17:58,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 73 transitions. [2023-11-21 22:17:58,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 73 transitions. [2023-11-21 22:17:58,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:58,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 73 transitions. [2023-11-21 22:17:58,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:58,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:58,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:58,547 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 66 flow. Second operand 3 states and 73 transitions. [2023-11-21 22:17:58,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 150 flow [2023-11-21 22:17:58,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:17:58,554 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2023-11-21 22:17:58,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-11-21 22:17:58,563 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-11-21 22:17:58,563 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2023-11-21 22:17:58,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:58,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:58,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:17:58,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:17:58,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:17:58,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:58,566 INFO L85 PathProgramCache]: Analyzing trace with hash 223253782, now seen corresponding path program 1 times [2023-11-21 22:17:58,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:58,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148464289] [2023-11-21 22:17:58,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:58,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:58,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:58,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148464289] [2023-11-21 22:17:58,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148464289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:58,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:58,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:17:58,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521023367] [2023-11-21 22:17:58,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:58,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:17:58,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:58,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:17:58,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:17:58,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-21 22:17:58,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:58,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:58,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-21 22:17:58,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:58,816 INFO L124 PetriNetUnfolderBase]: 279/583 cut-off events. [2023-11-21 22:17:58,816 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-21 22:17:58,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 583 events. 279/583 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3039 event pairs, 102 based on Foata normal form. 16/530 useless extension candidates. Maximal degree in co-relation 1151. Up to 266 conditions per place. [2023-11-21 22:17:58,823 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 27 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-11-21 22:17:58,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 174 flow [2023-11-21 22:17:58,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:17:58,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:17:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-21 22:17:58,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-21 22:17:58,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-21 22:17:58,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-21 22:17:58,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:58,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-21 22:17:58,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:58,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:58,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:58,833 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 3 states and 72 transitions. [2023-11-21 22:17:58,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 174 flow [2023-11-21 22:17:58,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:17:58,837 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 100 flow [2023-11-21 22:17:58,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-11-21 22:17:58,838 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-11-21 22:17:58,838 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 100 flow [2023-11-21 22:17:58,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:58,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:58,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:58,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:17:58,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:17:58,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:58,840 INFO L85 PathProgramCache]: Analyzing trace with hash -201472424, now seen corresponding path program 1 times [2023-11-21 22:17:58,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:58,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171029240] [2023-11-21 22:17:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:58,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:58,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:58,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171029240] [2023-11-21 22:17:58,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171029240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:58,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:58,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:17:58,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482183317] [2023-11-21 22:17:58,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:58,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:17:58,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:58,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:17:58,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:17:58,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2023-11-21 22:17:58,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:58,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:58,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2023-11-21 22:17:58,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:59,195 INFO L124 PetriNetUnfolderBase]: 661/1319 cut-off events. [2023-11-21 22:17:59,195 INFO L125 PetriNetUnfolderBase]: For 411/411 co-relation queries the response was YES. [2023-11-21 22:17:59,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 1319 events. 661/1319 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8393 event pairs, 376 based on Foata normal form. 64/1222 useless extension candidates. Maximal degree in co-relation 2731. Up to 721 conditions per place. [2023-11-21 22:17:59,209 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 50 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-11-21 22:17:59,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 302 flow [2023-11-21 22:17:59,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:17:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:17:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2023-11-21 22:17:59,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2023-11-21 22:17:59,212 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 93 transitions. [2023-11-21 22:17:59,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 93 transitions. [2023-11-21 22:17:59,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:59,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 93 transitions. [2023-11-21 22:17:59,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2023-11-21 22:17:59,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:59,214 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:59,214 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 100 flow. Second operand 4 states and 93 transitions. [2023-11-21 22:17:59,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 302 flow [2023-11-21 22:17:59,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 62 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:17:59,218 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 120 flow [2023-11-21 22:17:59,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-11-21 22:17:59,219 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-11-21 22:17:59,219 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 120 flow [2023-11-21 22:17:59,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:59,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:59,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:59,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:17:59,220 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:17:59,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:59,221 INFO L85 PathProgramCache]: Analyzing trace with hash -205369086, now seen corresponding path program 1 times [2023-11-21 22:17:59,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:59,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579912654] [2023-11-21 22:17:59,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:59,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:59,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:59,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579912654] [2023-11-21 22:17:59,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579912654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:59,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:59,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:17:59,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454429482] [2023-11-21 22:17:59,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:59,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:17:59,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:59,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:17:59,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:17:59,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-21 22:17:59,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:59,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:59,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-21 22:17:59,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:59,456 INFO L124 PetriNetUnfolderBase]: 439/1042 cut-off events. [2023-11-21 22:17:59,457 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2023-11-21 22:17:59,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2341 conditions, 1042 events. 439/1042 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6809 event pairs, 151 based on Foata normal form. 0/965 useless extension candidates. Maximal degree in co-relation 2326. Up to 459 conditions per place. [2023-11-21 22:17:59,467 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 37 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-11-21 22:17:59,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 267 flow [2023-11-21 22:17:59,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:17:59,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:17:59,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2023-11-21 22:17:59,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.78125 [2023-11-21 22:17:59,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2023-11-21 22:17:59,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2023-11-21 22:17:59,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:59,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2023-11-21 22:17:59,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:59,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:59,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:59,471 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 120 flow. Second operand 3 states and 75 transitions. [2023-11-21 22:17:59,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 267 flow [2023-11-21 22:17:59,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:17:59,476 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 140 flow [2023-11-21 22:17:59,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-11-21 22:17:59,477 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2023-11-21 22:17:59,477 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 140 flow [2023-11-21 22:17:59,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:59,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:59,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:59,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:17:59,478 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:17:59,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:59,479 INFO L85 PathProgramCache]: Analyzing trace with hash -205369085, now seen corresponding path program 1 times [2023-11-21 22:17:59,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:59,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581723224] [2023-11-21 22:17:59,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:59,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:59,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:59,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581723224] [2023-11-21 22:17:59,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581723224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:59,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:59,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:17:59,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792637417] [2023-11-21 22:17:59,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:59,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:17:59,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:59,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:17:59,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:17:59,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-21 22:17:59,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:59,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:59,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-21 22:17:59,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:59,689 INFO L124 PetriNetUnfolderBase]: 417/1032 cut-off events. [2023-11-21 22:17:59,689 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2023-11-21 22:17:59,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 1032 events. 417/1032 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6807 event pairs, 117 based on Foata normal form. 24/1015 useless extension candidates. Maximal degree in co-relation 2454. Up to 483 conditions per place. [2023-11-21 22:17:59,700 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 37 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-11-21 22:17:59,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 290 flow [2023-11-21 22:17:59,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:17:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:17:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2023-11-21 22:17:59,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2023-11-21 22:17:59,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 74 transitions. [2023-11-21 22:17:59,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 74 transitions. [2023-11-21 22:17:59,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:59,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 74 transitions. [2023-11-21 22:17:59,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:59,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:59,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:59,704 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 140 flow. Second operand 3 states and 74 transitions. [2023-11-21 22:17:59,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 290 flow [2023-11-21 22:17:59,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:17:59,709 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 154 flow [2023-11-21 22:17:59,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-11-21 22:17:59,710 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2023-11-21 22:17:59,710 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 154 flow [2023-11-21 22:17:59,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:59,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:59,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:59,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:17:59,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:17:59,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:59,712 INFO L85 PathProgramCache]: Analyzing trace with hash 208813157, now seen corresponding path program 1 times [2023-11-21 22:17:59,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:59,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296810953] [2023-11-21 22:17:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:59,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:59,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:59,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296810953] [2023-11-21 22:17:59,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296810953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:59,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:59,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:17:59,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610129023] [2023-11-21 22:17:59,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:59,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:17:59,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:59,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:17:59,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:17:59,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2023-11-21 22:17:59,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:17:59,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:59,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2023-11-21 22:17:59,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:00,078 INFO L124 PetriNetUnfolderBase]: 661/1351 cut-off events. [2023-11-21 22:18:00,079 INFO L125 PetriNetUnfolderBase]: For 1041/1157 co-relation queries the response was YES. [2023-11-21 22:18:00,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3376 conditions, 1351 events. 661/1351 cut-off events. For 1041/1157 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8864 event pairs, 292 based on Foata normal form. 87/1388 useless extension candidates. Maximal degree in co-relation 3357. Up to 853 conditions per place. [2023-11-21 22:18:00,094 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 51 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-11-21 22:18:00,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 376 flow [2023-11-21 22:18:00,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:18:00,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:18:00,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2023-11-21 22:18:00,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6953125 [2023-11-21 22:18:00,099 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 89 transitions. [2023-11-21 22:18:00,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 89 transitions. [2023-11-21 22:18:00,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:00,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 89 transitions. [2023-11-21 22:18:00,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:00,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:00,102 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:00,102 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 154 flow. Second operand 4 states and 89 transitions. [2023-11-21 22:18:00,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 376 flow [2023-11-21 22:18:00,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:18:00,107 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 174 flow [2023-11-21 22:18:00,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-11-21 22:18:00,111 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2023-11-21 22:18:00,112 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 174 flow [2023-11-21 22:18:00,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:00,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:00,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:00,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:18:00,113 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:18:00,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:00,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1172991260, now seen corresponding path program 1 times [2023-11-21 22:18:00,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:00,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066846453] [2023-11-21 22:18:00,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:00,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:00,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:00,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066846453] [2023-11-21 22:18:00,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066846453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:00,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:00,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:18:00,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664546571] [2023-11-21 22:18:00,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:00,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:18:00,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:00,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:18:00,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:18:00,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-21 22:18:00,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:00,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:00,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-21 22:18:00,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:00,494 INFO L124 PetriNetUnfolderBase]: 553/1324 cut-off events. [2023-11-21 22:18:00,495 INFO L125 PetriNetUnfolderBase]: For 1098/1179 co-relation queries the response was YES. [2023-11-21 22:18:00,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 1324 events. 553/1324 cut-off events. For 1098/1179 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9383 event pairs, 147 based on Foata normal form. 75/1348 useless extension candidates. Maximal degree in co-relation 3466. Up to 422 conditions per place. [2023-11-21 22:18:00,512 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 51 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2023-11-21 22:18:00,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 435 flow [2023-11-21 22:18:00,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:18:00,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:18:00,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2023-11-21 22:18:00,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.74375 [2023-11-21 22:18:00,515 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 119 transitions. [2023-11-21 22:18:00,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 119 transitions. [2023-11-21 22:18:00,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:00,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 119 transitions. [2023-11-21 22:18:00,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.8) internal successors, (119), 5 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) [2023-11-21 22:18:00,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:00,523 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:00,523 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 174 flow. Second operand 5 states and 119 transitions. [2023-11-21 22:18:00,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 435 flow [2023-11-21 22:18:00,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:18:00,530 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 258 flow [2023-11-21 22:18:00,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-11-21 22:18:00,535 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 21 predicate places. [2023-11-21 22:18:00,541 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 258 flow [2023-11-21 22:18:00,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:00,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:00,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:00,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:18:00,542 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:18:00,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:00,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1191038841, now seen corresponding path program 1 times [2023-11-21 22:18:00,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:00,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561628591] [2023-11-21 22:18:00,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:00,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:00,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:00,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:00,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561628591] [2023-11-21 22:18:00,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561628591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:00,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:00,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:18:00,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033894366] [2023-11-21 22:18:00,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:00,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:18:00,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:00,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:18:00,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:18:00,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-21 22:18:00,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:00,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:00,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-21 22:18:00,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:00,883 INFO L124 PetriNetUnfolderBase]: 608/1490 cut-off events. [2023-11-21 22:18:00,883 INFO L125 PetriNetUnfolderBase]: For 1762/1878 co-relation queries the response was YES. [2023-11-21 22:18:00,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 1490 events. 608/1490 cut-off events. For 1762/1878 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10785 event pairs, 81 based on Foata normal form. 69/1523 useless extension candidates. Maximal degree in co-relation 4048. Up to 509 conditions per place. [2023-11-21 22:18:00,903 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 55 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2023-11-21 22:18:00,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 545 flow [2023-11-21 22:18:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:18:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:18:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2023-11-21 22:18:00,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.725 [2023-11-21 22:18:00,905 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 116 transitions. [2023-11-21 22:18:00,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 116 transitions. [2023-11-21 22:18:00,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:00,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 116 transitions. [2023-11-21 22:18:00,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.2) internal successors, (116), 5 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) [2023-11-21 22:18:00,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:00,908 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:00,909 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 258 flow. Second operand 5 states and 116 transitions. [2023-11-21 22:18:00,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 545 flow [2023-11-21 22:18:00,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 81 transitions, 543 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-21 22:18:00,921 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 328 flow [2023-11-21 22:18:00,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2023-11-21 22:18:00,924 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2023-11-21 22:18:00,925 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 328 flow [2023-11-21 22:18:00,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:00,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:00,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:00,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:18:00,926 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:18:00,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:00,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1865249180, now seen corresponding path program 1 times [2023-11-21 22:18:00,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:00,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662995011] [2023-11-21 22:18:00,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:00,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:00,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:00,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:00,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662995011] [2023-11-21 22:18:00,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662995011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:00,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:00,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:18:00,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702934675] [2023-11-21 22:18:00,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:00,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:18:00,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:00,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:18:00,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:18:00,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-21 22:18:00,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:00,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:00,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-21 22:18:00,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:01,204 INFO L124 PetriNetUnfolderBase]: 503/1205 cut-off events. [2023-11-21 22:18:01,204 INFO L125 PetriNetUnfolderBase]: For 2149/2256 co-relation queries the response was YES. [2023-11-21 22:18:01,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3404 conditions, 1205 events. 503/1205 cut-off events. For 2149/2256 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8108 event pairs, 378 based on Foata normal form. 84/1229 useless extension candidates. Maximal degree in co-relation 3375. Up to 846 conditions per place. [2023-11-21 22:18:01,219 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 30 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-11-21 22:18:01,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 45 transitions, 319 flow [2023-11-21 22:18:01,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:18:01,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:18:01,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2023-11-21 22:18:01,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-11-21 22:18:01,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 60 transitions. [2023-11-21 22:18:01,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 60 transitions. [2023-11-21 22:18:01,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:01,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 60 transitions. [2023-11-21 22:18:01,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:01,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:01,223 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:01,223 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 328 flow. Second operand 3 states and 60 transitions. [2023-11-21 22:18:01,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 45 transitions, 319 flow [2023-11-21 22:18:01,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 45 transitions, 304 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-21 22:18:01,232 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 244 flow [2023-11-21 22:18:01,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2023-11-21 22:18:01,233 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 23 predicate places. [2023-11-21 22:18:01,233 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 244 flow [2023-11-21 22:18:01,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:01,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:01,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:01,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:18:01,234 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:18:01,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:01,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1191045681, now seen corresponding path program 1 times [2023-11-21 22:18:01,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:01,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790577169] [2023-11-21 22:18:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:01,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:01,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:01,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790577169] [2023-11-21 22:18:01,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790577169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:01,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:01,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:18:01,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315391037] [2023-11-21 22:18:01,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:01,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:18:01,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:01,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:18:01,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:18:01,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-21 22:18:01,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:01,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:01,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-21 22:18:01,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:01,530 INFO L124 PetriNetUnfolderBase]: 558/1374 cut-off events. [2023-11-21 22:18:01,531 INFO L125 PetriNetUnfolderBase]: For 1496/1607 co-relation queries the response was YES. [2023-11-21 22:18:01,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3670 conditions, 1374 events. 558/1374 cut-off events. For 1496/1607 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9446 event pairs, 119 based on Foata normal form. 66/1395 useless extension candidates. Maximal degree in co-relation 3646. Up to 674 conditions per place. [2023-11-21 22:18:01,549 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 50 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2023-11-21 22:18:01,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 444 flow [2023-11-21 22:18:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:18:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:18:01,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2023-11-21 22:18:01,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.69375 [2023-11-21 22:18:01,551 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 111 transitions. [2023-11-21 22:18:01,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 111 transitions. [2023-11-21 22:18:01,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:01,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 111 transitions. [2023-11-21 22:18:01,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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) [2023-11-21 22:18:01,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:01,553 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:01,553 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 244 flow. Second operand 5 states and 111 transitions. [2023-11-21 22:18:01,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 444 flow [2023-11-21 22:18:01,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:18:01,561 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 269 flow [2023-11-21 22:18:01,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2023-11-21 22:18:01,562 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-21 22:18:01,563 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 269 flow [2023-11-21 22:18:01,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:01,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:01,563 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:01,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:18:01,564 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:18:01,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:01,564 INFO L85 PathProgramCache]: Analyzing trace with hash -2045990776, now seen corresponding path program 1 times [2023-11-21 22:18:01,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:01,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732969195] [2023-11-21 22:18:01,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:01,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:01,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:01,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732969195] [2023-11-21 22:18:01,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732969195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:18:01,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586031602] [2023-11-21 22:18:01,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:01,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:01,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:01,652 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:18:01,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:18:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:01,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:18:01,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:18:01,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:01,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:18:01,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586031602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:01,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:18:01,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-21 22:18:01,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353248795] [2023-11-21 22:18:01,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:01,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:18:01,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:01,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:18:01,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:18:01,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2023-11-21 22:18:01,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:01,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:01,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2023-11-21 22:18:01,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:02,250 INFO L124 PetriNetUnfolderBase]: 851/1803 cut-off events. [2023-11-21 22:18:02,250 INFO L125 PetriNetUnfolderBase]: For 2364/2520 co-relation queries the response was YES. [2023-11-21 22:18:02,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5077 conditions, 1803 events. 851/1803 cut-off events. For 2364/2520 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12205 event pairs, 69 based on Foata normal form. 121/1846 useless extension candidates. Maximal degree in co-relation 5050. Up to 572 conditions per place. [2023-11-21 22:18:02,281 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 80 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2023-11-21 22:18:02,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 96 transitions, 700 flow [2023-11-21 22:18:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:18:02,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:18:02,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2023-11-21 22:18:02,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2023-11-21 22:18:02,283 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 124 transitions. [2023-11-21 22:18:02,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 124 transitions. [2023-11-21 22:18:02,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:02,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 124 transitions. [2023-11-21 22:18:02,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 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) [2023-11-21 22:18:02,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:02,285 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:02,285 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 269 flow. Second operand 6 states and 124 transitions. [2023-11-21 22:18:02,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 96 transitions, 700 flow [2023-11-21 22:18:02,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 96 transitions, 678 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-21 22:18:02,298 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 267 flow [2023-11-21 22:18:02,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2023-11-21 22:18:02,300 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 30 predicate places. [2023-11-21 22:18:02,300 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 267 flow [2023-11-21 22:18:02,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:02,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:02,300 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-21 22:18:02,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:18:02,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:02,516 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:18:02,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:02,516 INFO L85 PathProgramCache]: Analyzing trace with hash 998795634, now seen corresponding path program 1 times [2023-11-21 22:18:02,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:02,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437725003] [2023-11-21 22:18:02,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:02,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:18:02,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:02,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437725003] [2023-11-21 22:18:02,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437725003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:02,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:02,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:18:02,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43268157] [2023-11-21 22:18:02,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:02,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:18:02,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:02,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:18:02,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:18:02,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-21 22:18:02,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:02,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:02,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-21 22:18:02,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:02,873 INFO L124 PetriNetUnfolderBase]: 883/1815 cut-off events. [2023-11-21 22:18:02,874 INFO L125 PetriNetUnfolderBase]: For 2603/2696 co-relation queries the response was YES. [2023-11-21 22:18:02,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 1815 events. 883/1815 cut-off events. For 2603/2696 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12013 event pairs, 175 based on Foata normal form. 113/1897 useless extension candidates. Maximal degree in co-relation 5372. Up to 726 conditions per place. [2023-11-21 22:18:02,895 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 57 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2023-11-21 22:18:02,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 534 flow [2023-11-21 22:18:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:18:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:18:02,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2023-11-21 22:18:02,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609375 [2023-11-21 22:18:02,897 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 78 transitions. [2023-11-21 22:18:02,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 78 transitions. [2023-11-21 22:18:02,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:02,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 78 transitions. [2023-11-21 22:18:02,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:02,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:02,899 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:02,899 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 267 flow. Second operand 4 states and 78 transitions. [2023-11-21 22:18:02,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 534 flow [2023-11-21 22:18:02,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 518 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-21 22:18:02,910 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 267 flow [2023-11-21 22:18:02,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2023-11-21 22:18:02,911 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-21 22:18:02,911 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 267 flow [2023-11-21 22:18:02,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:02,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:02,912 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:02,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:18:02,912 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:18:02,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:02,913 INFO L85 PathProgramCache]: Analyzing trace with hash 146874342, now seen corresponding path program 1 times [2023-11-21 22:18:02,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:02,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585090302] [2023-11-21 22:18:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:02,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:02,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:02,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585090302] [2023-11-21 22:18:02,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585090302] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:18:02,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031417201] [2023-11-21 22:18:02,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:02,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:02,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:02,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:18:03,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:18:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:03,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:18:03,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:18:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:03,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:18:03,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031417201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:03,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:18:03,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-21 22:18:03,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095706272] [2023-11-21 22:18:03,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:03,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:18:03,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:03,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:18:03,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:18:03,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-21 22:18:03,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 267 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:03,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:03,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-21 22:18:03,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:03,476 INFO L124 PetriNetUnfolderBase]: 1026/1892 cut-off events. [2023-11-21 22:18:03,476 INFO L125 PetriNetUnfolderBase]: For 3395/3395 co-relation queries the response was YES. [2023-11-21 22:18:03,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5751 conditions, 1892 events. 1026/1892 cut-off events. For 3395/3395 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11856 event pairs, 153 based on Foata normal form. 69/1875 useless extension candidates. Maximal degree in co-relation 5727. Up to 765 conditions per place. [2023-11-21 22:18:03,496 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 52 selfloop transitions, 6 changer transitions 1/67 dead transitions. [2023-11-21 22:18:03,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 524 flow [2023-11-21 22:18:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:18:03,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:18:03,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2023-11-21 22:18:03,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2023-11-21 22:18:03,497 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 74 transitions. [2023-11-21 22:18:03,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 74 transitions. [2023-11-21 22:18:03,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:03,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 74 transitions. [2023-11-21 22:18:03,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:03,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:03,499 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:03,499 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 267 flow. Second operand 4 states and 74 transitions. [2023-11-21 22:18:03,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 524 flow [2023-11-21 22:18:03,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 67 transitions, 510 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:18:03,509 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 267 flow [2023-11-21 22:18:03,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2023-11-21 22:18:03,510 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-21 22:18:03,510 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 267 flow [2023-11-21 22:18:03,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:03,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:03,511 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:03,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:18:03,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-21 22:18:03,724 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:18:03,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:03,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1612175747, now seen corresponding path program 1 times [2023-11-21 22:18:03,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:03,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476956002] [2023-11-21 22:18:03,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:03,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:03,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:03,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476956002] [2023-11-21 22:18:03,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476956002] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:18:03,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242505188] [2023-11-21 22:18:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:03,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:03,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:03,801 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:18:03,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:18:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:03,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:18:03,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:18:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:03,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:18:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:03,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242505188] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:18:03,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:18:03,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-21 22:18:03,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283763137] [2023-11-21 22:18:03,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:18:03,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:18:03,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:03,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:18:03,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:18:04,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-21 22:18:04,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 267 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:04,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:04,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-21 22:18:04,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:04,345 INFO L124 PetriNetUnfolderBase]: 747/1709 cut-off events. [2023-11-21 22:18:04,345 INFO L125 PetriNetUnfolderBase]: For 3499/3544 co-relation queries the response was YES. [2023-11-21 22:18:04,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5093 conditions, 1709 events. 747/1709 cut-off events. For 3499/3544 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 10738 event pairs, 71 based on Foata normal form. 132/1816 useless extension candidates. Maximal degree in co-relation 5068. Up to 289 conditions per place. [2023-11-21 22:18:04,361 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 61 selfloop transitions, 12 changer transitions 4/89 dead transitions. [2023-11-21 22:18:04,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 89 transitions, 643 flow [2023-11-21 22:18:04,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:18:04,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:18:04,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2023-11-21 22:18:04,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-21 22:18:04,363 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 160 transitions. [2023-11-21 22:18:04,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 160 transitions. [2023-11-21 22:18:04,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:04,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 160 transitions. [2023-11-21 22:18:04,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:04,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:04,366 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:04,366 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 267 flow. Second operand 7 states and 160 transitions. [2023-11-21 22:18:04,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 89 transitions, 643 flow [2023-11-21 22:18:04,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 611 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-21 22:18:04,381 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 371 flow [2023-11-21 22:18:04,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2023-11-21 22:18:04,382 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 36 predicate places. [2023-11-21 22:18:04,382 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 371 flow [2023-11-21 22:18:04,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:04,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:04,383 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:04,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-21 22:18:04,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:04,604 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:18:04,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:04,604 INFO L85 PathProgramCache]: Analyzing trace with hash 258137567, now seen corresponding path program 1 times [2023-11-21 22:18:04,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:04,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194680832] [2023-11-21 22:18:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:04,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:18:04,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:04,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194680832] [2023-11-21 22:18:04,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194680832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:04,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:04,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:18:04,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407486300] [2023-11-21 22:18:04,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:04,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:18:04,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:04,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:18:04,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:18:04,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-21 22:18:04,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:04,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:04,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-21 22:18:04,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:05,036 INFO L124 PetriNetUnfolderBase]: 1190/2257 cut-off events. [2023-11-21 22:18:05,037 INFO L125 PetriNetUnfolderBase]: For 5438/5438 co-relation queries the response was YES. [2023-11-21 22:18:05,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 2257 events. 1190/2257 cut-off events. For 5438/5438 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13425 event pairs, 275 based on Foata normal form. 0/2223 useless extension candidates. Maximal degree in co-relation 7254. Up to 893 conditions per place. [2023-11-21 22:18:05,058 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2023-11-21 22:18:05,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 77 transitions, 732 flow [2023-11-21 22:18:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:18:05,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:18:05,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2023-11-21 22:18:05,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2023-11-21 22:18:05,060 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 74 transitions. [2023-11-21 22:18:05,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 74 transitions. [2023-11-21 22:18:05,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:05,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 74 transitions. [2023-11-21 22:18:05,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:05,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:05,062 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:05,062 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 371 flow. Second operand 4 states and 74 transitions. [2023-11-21 22:18:05,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 77 transitions, 732 flow [2023-11-21 22:18:05,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 701 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-21 22:18:05,074 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 368 flow [2023-11-21 22:18:05,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2023-11-21 22:18:05,075 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2023-11-21 22:18:05,075 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 368 flow [2023-11-21 22:18:05,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:05,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:05,076 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:05,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 22:18:05,076 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:18:05,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:05,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1371124197, now seen corresponding path program 1 times [2023-11-21 22:18:05,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:05,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694031296] [2023-11-21 22:18:05,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:05,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:05,164 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:05,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:05,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694031296] [2023-11-21 22:18:05,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694031296] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:18:05,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414989449] [2023-11-21 22:18:05,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:05,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:05,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:05,166 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:18:05,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:18:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:05,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:18:05,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:18:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:05,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:18:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:05,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414989449] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:18:05,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:18:05,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-21 22:18:05,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939461242] [2023-11-21 22:18:05,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:18:05,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:18:05,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:05,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:18:05,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:18:05,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-21 22:18:05,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 368 flow. Second operand has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:05,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:05,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-21 22:18:05,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:06,013 INFO L124 PetriNetUnfolderBase]: 972/2188 cut-off events. [2023-11-21 22:18:06,013 INFO L125 PetriNetUnfolderBase]: For 7406/7424 co-relation queries the response was YES. [2023-11-21 22:18:06,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7022 conditions, 2188 events. 972/2188 cut-off events. For 7406/7424 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12998 event pairs, 35 based on Foata normal form. 120/2299 useless extension candidates. Maximal degree in co-relation 6991. Up to 262 conditions per place. [2023-11-21 22:18:06,041 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 78 selfloop transitions, 17 changer transitions 17/124 dead transitions. [2023-11-21 22:18:06,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 947 flow [2023-11-21 22:18:06,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:18:06,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-21 22:18:06,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 270 transitions. [2023-11-21 22:18:06,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.703125 [2023-11-21 22:18:06,044 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 270 transitions. [2023-11-21 22:18:06,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 270 transitions. [2023-11-21 22:18:06,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:06,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 270 transitions. [2023-11-21 22:18:06,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 22.5) internal successors, (270), 12 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:06,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 32.0) internal successors, (416), 13 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:06,048 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 32.0) internal successors, (416), 13 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:06,049 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 368 flow. Second operand 12 states and 270 transitions. [2023-11-21 22:18:06,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 947 flow [2023-11-21 22:18:06,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 124 transitions, 910 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-21 22:18:06,065 INFO L231 Difference]: Finished difference. Result has 87 places, 52 transitions, 427 flow [2023-11-21 22:18:06,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=427, PETRI_PLACES=87, PETRI_TRANSITIONS=52} [2023-11-21 22:18:06,066 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 52 predicate places. [2023-11-21 22:18:06,066 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 52 transitions, 427 flow [2023-11-21 22:18:06,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:06,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:06,068 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:06,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:18:06,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:06,283 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:18:06,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:06,284 INFO L85 PathProgramCache]: Analyzing trace with hash 19604967, now seen corresponding path program 1 times [2023-11-21 22:18:06,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:06,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920055418] [2023-11-21 22:18:06,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:06,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:06,430 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:06,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:06,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920055418] [2023-11-21 22:18:06,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920055418] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:18:06,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253641211] [2023-11-21 22:18:06,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:06,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:06,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:06,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:18:06,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:18:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:06,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:18:06,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:18:06,603 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:06,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:18:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:06,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253641211] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:18:06,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:18:06,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-21 22:18:06,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296889060] [2023-11-21 22:18:06,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:18:06,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-21 22:18:06,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:06,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-21 22:18:06,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:18:06,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-21 22:18:06,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 52 transitions, 427 flow. Second operand has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:06,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:06,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-21 22:18:06,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:07,674 INFO L124 PetriNetUnfolderBase]: 1422/3158 cut-off events. [2023-11-21 22:18:07,675 INFO L125 PetriNetUnfolderBase]: For 11400/11418 co-relation queries the response was YES. [2023-11-21 22:18:07,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10129 conditions, 3158 events. 1422/3158 cut-off events. For 11400/11418 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 18950 event pairs, 71 based on Foata normal form. 108/3247 useless extension candidates. Maximal degree in co-relation 10090. Up to 406 conditions per place. [2023-11-21 22:18:07,716 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 92 selfloop transitions, 24 changer transitions 25/153 dead transitions. [2023-11-21 22:18:07,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 153 transitions, 1220 flow [2023-11-21 22:18:07,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 22:18:07,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-21 22:18:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 336 transitions. [2023-11-21 22:18:07,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-21 22:18:07,719 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 336 transitions. [2023-11-21 22:18:07,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 336 transitions. [2023-11-21 22:18:07,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:07,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 336 transitions. [2023-11-21 22:18:07,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 22.4) internal successors, (336), 15 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:07,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 32.0) internal successors, (512), 16 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:07,723 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 32.0) internal successors, (512), 16 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:07,723 INFO L175 Difference]: Start difference. First operand has 87 places, 52 transitions, 427 flow. Second operand 15 states and 336 transitions. [2023-11-21 22:18:07,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 153 transitions, 1220 flow [2023-11-21 22:18:07,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 153 transitions, 1207 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-21 22:18:07,749 INFO L231 Difference]: Finished difference. Result has 105 places, 60 transitions, 578 flow [2023-11-21 22:18:07,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=578, PETRI_PLACES=105, PETRI_TRANSITIONS=60} [2023-11-21 22:18:07,750 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2023-11-21 22:18:07,750 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 60 transitions, 578 flow [2023-11-21 22:18:07,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:07,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:07,751 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:07,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:18:07,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:07,971 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:18:07,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:07,971 INFO L85 PathProgramCache]: Analyzing trace with hash 117045895, now seen corresponding path program 2 times [2023-11-21 22:18:07,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:07,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326853495] [2023-11-21 22:18:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:07,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:08,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:08,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326853495] [2023-11-21 22:18:08,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326853495] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:18:08,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110939532] [2023-11-21 22:18:08,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:18:08,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:08,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:08,327 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:18:08,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 22:18:08,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:18:08,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:18:08,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 22:18:08,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:18:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:08,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:18:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:08,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110939532] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:18:08,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:18:08,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2023-11-21 22:18:08,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876501643] [2023-11-21 22:18:08,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:18:08,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-21 22:18:08,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:08,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-21 22:18:08,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2023-11-21 22:18:08,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-21 22:18:08,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 60 transitions, 578 flow. Second operand has 28 states, 28 states have (on average 16.142857142857142) internal successors, (452), 28 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:08,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:08,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-21 22:18:08,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:10,771 INFO L124 PetriNetUnfolderBase]: 2412/5356 cut-off events. [2023-11-21 22:18:10,772 INFO L125 PetriNetUnfolderBase]: For 28138/28156 co-relation queries the response was YES. [2023-11-21 22:18:10,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17417 conditions, 5356 events. 2412/5356 cut-off events. For 28138/28156 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 31875 event pairs, 35 based on Foata normal form. 216/5563 useless extension candidates. Maximal degree in co-relation 17370. Up to 694 conditions per place. [2023-11-21 22:18:10,844 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 158 selfloop transitions, 41 changer transitions 49/260 dead transitions. [2023-11-21 22:18:10,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 260 transitions, 2118 flow [2023-11-21 22:18:10,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-21 22:18:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-21 22:18:10,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 627 transitions. [2023-11-21 22:18:10,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6997767857142857 [2023-11-21 22:18:10,848 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 627 transitions. [2023-11-21 22:18:10,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 627 transitions. [2023-11-21 22:18:10,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:10,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 627 transitions. [2023-11-21 22:18:10,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 22.392857142857142) internal successors, (627), 28 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:10,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 32.0) internal successors, (928), 29 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:10,857 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 32.0) internal successors, (928), 29 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:10,857 INFO L175 Difference]: Start difference. First operand has 105 places, 60 transitions, 578 flow. Second operand 28 states and 627 transitions. [2023-11-21 22:18:10,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 260 transitions, 2118 flow [2023-11-21 22:18:10,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 260 transitions, 2038 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-21 22:18:10,918 INFO L231 Difference]: Finished difference. Result has 139 places, 76 transitions, 840 flow [2023-11-21 22:18:10,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=840, PETRI_PLACES=139, PETRI_TRANSITIONS=76} [2023-11-21 22:18:10,919 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 104 predicate places. [2023-11-21 22:18:10,919 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 76 transitions, 840 flow [2023-11-21 22:18:10,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 16.142857142857142) internal successors, (452), 28 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:10,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:10,920 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:10,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-21 22:18:11,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:11,124 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:18:11,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:11,125 INFO L85 PathProgramCache]: Analyzing trace with hash -940623473, now seen corresponding path program 2 times [2023-11-21 22:18:11,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:11,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998205422] [2023-11-21 22:18:11,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:11,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:11,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:11,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998205422] [2023-11-21 22:18:11,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998205422] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:18:11,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105701316] [2023-11-21 22:18:11,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:18:11,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:11,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:11,990 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:18:12,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 22:18:12,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:18:12,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:18:12,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-21 22:18:12,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:18:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:12,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:18:13,041 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:13,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105701316] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:18:13,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:18:13,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2023-11-21 22:18:13,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25169278] [2023-11-21 22:18:13,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:18:13,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-21 22:18:13,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:13,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-21 22:18:13,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1656, Unknown=0, NotChecked=0, Total=2256 [2023-11-21 22:18:13,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-21 22:18:13,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 76 transitions, 840 flow. Second operand has 48 states, 48 states have (on average 16.083333333333332) internal successors, (772), 48 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:13,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:13,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-21 22:18:13,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:17,702 INFO L124 PetriNetUnfolderBase]: 4302/9494 cut-off events. [2023-11-21 22:18:17,702 INFO L125 PetriNetUnfolderBase]: For 80754/80772 co-relation queries the response was YES. [2023-11-21 22:18:17,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30888 conditions, 9494 events. 4302/9494 cut-off events. For 80754/80772 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 56608 event pairs, 71 based on Foata normal form. 396/9871 useless extension candidates. Maximal degree in co-relation 30828. Up to 1270 conditions per place. [2023-11-21 22:18:17,858 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 252 selfloop transitions, 72 changer transitions 89/425 dead transitions. [2023-11-21 22:18:17,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 425 transitions, 3529 flow [2023-11-21 22:18:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-21 22:18:17,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-11-21 22:18:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1056 transitions. [2023-11-21 22:18:17,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7021276595744681 [2023-11-21 22:18:17,866 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 1056 transitions. [2023-11-21 22:18:17,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 1056 transitions. [2023-11-21 22:18:17,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:17,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 1056 transitions. [2023-11-21 22:18:17,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 22.46808510638298) internal successors, (1056), 47 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:17,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 32.0) internal successors, (1536), 48 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:17,880 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 32.0) internal successors, (1536), 48 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:17,881 INFO L175 Difference]: Start difference. First operand has 139 places, 76 transitions, 840 flow. Second operand 47 states and 1056 transitions. [2023-11-21 22:18:17,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 425 transitions, 3529 flow [2023-11-21 22:18:18,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 425 transitions, 3383 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-21 22:18:18,032 INFO L231 Difference]: Finished difference. Result has 197 places, 108 transitions, 1346 flow [2023-11-21 22:18:18,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1346, PETRI_PLACES=197, PETRI_TRANSITIONS=108} [2023-11-21 22:18:18,033 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 162 predicate places. [2023-11-21 22:18:18,033 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 108 transitions, 1346 flow [2023-11-21 22:18:18,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 16.083333333333332) internal successors, (772), 48 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:18,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:18,034 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 22, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:18,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:18:18,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:18,248 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-21 22:18:18,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:18,249 INFO L85 PathProgramCache]: Analyzing trace with hash -2025631865, now seen corresponding path program 3 times [2023-11-21 22:18:18,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:18,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416015954] [2023-11-21 22:18:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:18,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:21,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 0 proven. 2291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:21,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:21,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416015954] [2023-11-21 22:18:21,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416015954] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:18:21,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541504630] [2023-11-21 22:18:21,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:18:21,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:21,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:21,301 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:18:21,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dafd47c-fbca-4ae4-ae74-75c9e686b224/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 22:18:21,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2023-11-21 22:18:21,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:18:21,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-21 22:18:21,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:18:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 2286 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 22:18:23,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:18:23,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541504630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:23,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:18:23,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [45] total 92 [2023-11-21 22:18:23,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806023750] [2023-11-21 22:18:23,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:23,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-21 22:18:23,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:23,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-21 22:18:23,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1149, Invalid=7223, Unknown=0, NotChecked=0, Total=8372 [2023-11-21 22:18:23,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-21 22:18:23,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 108 transitions, 1346 flow. Second operand has 47 states, 47 states have (on average 12.957446808510639) internal successors, (609), 47 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:23,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:23,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-21 22:18:23,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand