./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl --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 1b3f2e76aa91b47c1b0ab3ebb03a5219efabc6e79eff8c780f49eaa0a2d155ad --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:17:12,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:17:12,121 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:17:12,127 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:17:12,128 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:17:12,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:17:12,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:17:12,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:17:12,154 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:17:12,155 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:17:12,156 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:17:12,156 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:17:12,157 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:17:12,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:17:12,158 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:17:12,159 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:17:12,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:17:12,160 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:17:12,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:17:12,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:17:12,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:17:12,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:17:12,162 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:17:12,163 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:17:12,163 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:17:12,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:17:12,164 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:17:12,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:17:12,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:17:12,166 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:17:12,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:12,167 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:17:12,167 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:17:12,168 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:17:12,168 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:17:12,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:17:12,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:17:12,169 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:17:12,170 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:17:12,170 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:17:12,171 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:17:12,176 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_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b3f2e76aa91b47c1b0ab3ebb03a5219efabc6e79eff8c780f49eaa0a2d155ad [2023-11-12 02:17:12,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:17:12,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:17:12,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:17:12,523 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:17:12,524 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:17:12,525 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2023-11-12 02:17:15,629 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:17:15,868 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:17:15,869 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2023-11-12 02:17:15,881 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/data/88d5c394d/35a2ef3dbfa843a688c08297d43b2904/FLAGfed3782c3 [2023-11-12 02:17:15,899 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/data/88d5c394d/35a2ef3dbfa843a688c08297d43b2904 [2023-11-12 02:17:15,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:17:15,908 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:17:15,913 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:15,913 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:17:15,918 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:17:15,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:15" (1/1) ... [2023-11-12 02:17:15,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618c5d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:15, skipping insertion in model container [2023-11-12 02:17:15,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:15" (1/1) ... [2023-11-12 02:17:15,957 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:17:16,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:16,222 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:17:16,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:16,255 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:17:16,255 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:17:16,263 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:17:16,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:16 WrapperNode [2023-11-12 02:17:16,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:16,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:16,265 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:17:16,265 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:17:16,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:16" (1/1) ... [2023-11-12 02:17:16,283 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:16" (1/1) ... [2023-11-12 02:17:16,307 INFO L138 Inliner]: procedures = 22, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2023-11-12 02:17:16,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:16,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:17:16,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:17:16,311 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:17:16,320 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:16" (1/1) ... [2023-11-12 02:17:16,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:16" (1/1) ... [2023-11-12 02:17:16,323 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:16" (1/1) ... [2023-11-12 02:17:16,324 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:16" (1/1) ... [2023-11-12 02:17:16,339 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:16" (1/1) ... [2023-11-12 02:17:16,351 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:16" (1/1) ... [2023-11-12 02:17:16,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:16" (1/1) ... [2023-11-12 02:17:16,355 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:16" (1/1) ... [2023-11-12 02:17:16,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:17:16,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:17:16,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:17:16,365 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:17:16,366 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:16" (1/1) ... [2023-11-12 02:17:16,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:16,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:16,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:16,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:17:16,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:17:16,447 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:17:16,448 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:17:16,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:17:16,448 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:17:16,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:17:16,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:17:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:17:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:17:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:17:16,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:17:16,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:17:16,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:17:16,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:17:16,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:17:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:17:16,452 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:17:16,557 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:17:16,559 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:17:16,850 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:17:16,930 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:17:16,931 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:17:16,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:16 BoogieIcfgContainer [2023-11-12 02:17:16,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:17:16,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:17:16,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:17:16,955 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:17:16,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:17:15" (1/3) ... [2023-11-12 02:17:16,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507828fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:16, skipping insertion in model container [2023-11-12 02:17:16,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:16" (2/3) ... [2023-11-12 02:17:16,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507828fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:16, skipping insertion in model container [2023-11-12 02:17:16,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:16" (3/3) ... [2023-11-12 02:17:16,959 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2023-11-12 02:17:16,969 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:17:16,987 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:17:16,987 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-12 02:17:16,987 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:17:17,079 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:17:17,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 118 transitions, 257 flow [2023-11-12 02:17:17,192 INFO L124 PetriNetUnfolderBase]: 7/115 cut-off events. [2023-11-12 02:17:17,192 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:17:17,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 115 events. 7/115 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 117 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-11-12 02:17:17,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 118 transitions, 257 flow [2023-11-12 02:17:17,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 96 transitions, 204 flow [2023-11-12 02:17:17,209 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:17:17,226 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 96 transitions, 204 flow [2023-11-12 02:17:17,237 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 96 transitions, 204 flow [2023-11-12 02:17:17,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 96 transitions, 204 flow [2023-11-12 02:17:17,278 INFO L124 PetriNetUnfolderBase]: 7/96 cut-off events. [2023-11-12 02:17:17,278 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:17:17,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 96 events. 7/96 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 117 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-11-12 02:17:17,283 INFO L119 LiptonReduction]: Number of co-enabled transitions 1816 [2023-11-12 02:17:21,549 INFO L134 LiptonReduction]: Checked pairs total: 2054 [2023-11-12 02:17:21,549 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-11-12 02:17:21,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:17:21,572 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;@8bc6224, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:17:21,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-12 02:17:21,577 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:17:21,577 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-12 02:17:21,577 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:17:21,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:21,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:17:21,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:17:21,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash 14127462, now seen corresponding path program 1 times [2023-11-12 02:17:21,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:21,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966338958] [2023-11-12 02:17:21,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:21,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:21,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:21,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966338958] [2023-11-12 02:17:21,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966338958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:21,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:21,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:17:21,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137891131] [2023-11-12 02:17:21,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:21,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:21,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:21,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:21,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:21,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 210 [2023-11-12 02:17:22,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:22,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:22,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 210 [2023-11-12 02:17:22,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:22,467 INFO L124 PetriNetUnfolderBase]: 1275/1890 cut-off events. [2023-11-12 02:17:22,467 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2023-11-12 02:17:22,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4017 conditions, 1890 events. 1275/1890 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8658 event pairs, 547 based on Foata normal form. 0/1120 useless extension candidates. Maximal degree in co-relation 3654. Up to 1020 conditions per place. [2023-11-12 02:17:22,493 INFO L140 encePairwiseOnDemand]: 204/210 looper letters, 43 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-11-12 02:17:22,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 209 flow [2023-11-12 02:17:22,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:22,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:22,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-11-12 02:17:22,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5206349206349207 [2023-11-12 02:17:22,521 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-11-12 02:17:22,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-11-12 02:17:22,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:22,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-11-12 02:17:22,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:22,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:22,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:22,544 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 64 flow. Second operand 3 states and 328 transitions. [2023-11-12 02:17:22,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 209 flow [2023-11-12 02:17:22,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 47 transitions, 199 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:17:22,556 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 90 flow [2023-11-12 02:17:22,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-11-12 02:17:22,564 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-11-12 02:17:22,565 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 90 flow [2023-11-12 02:17:22,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:22,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:22,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:17:22,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:17:22,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:17:22,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:22,568 INFO L85 PathProgramCache]: Analyzing trace with hash 14127464, now seen corresponding path program 1 times [2023-11-12 02:17:22,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:22,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184283372] [2023-11-12 02:17:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:22,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:22,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:22,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:22,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184283372] [2023-11-12 02:17:22,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184283372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:22,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:22,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:17:22,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112677524] [2023-11-12 02:17:22,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:22,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:22,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:22,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:22,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:22,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 210 [2023-11-12 02:17:22,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:22,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:22,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 210 [2023-11-12 02:17:22,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:23,073 INFO L124 PetriNetUnfolderBase]: 1343/2002 cut-off events. [2023-11-12 02:17:23,074 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2023-11-12 02:17:23,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4755 conditions, 2002 events. 1343/2002 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 9181 event pairs, 309 based on Foata normal form. 20/1376 useless extension candidates. Maximal degree in co-relation 3776. Up to 1839 conditions per place. [2023-11-12 02:17:23,092 INFO L140 encePairwiseOnDemand]: 201/210 looper letters, 40 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-11-12 02:17:23,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 209 flow [2023-11-12 02:17:23,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:23,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:23,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-11-12 02:17:23,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5206349206349207 [2023-11-12 02:17:23,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-11-12 02:17:23,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-11-12 02:17:23,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:23,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-11-12 02:17:23,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:23,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:23,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:23,102 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 90 flow. Second operand 3 states and 328 transitions. [2023-11-12 02:17:23,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 209 flow [2023-11-12 02:17:23,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:17:23,107 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 111 flow [2023-11-12 02:17:23,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-11-12 02:17:23,108 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-11-12 02:17:23,109 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 111 flow [2023-11-12 02:17:23,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:23,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:23,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:17:23,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:17:23,110 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:17:23,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:23,111 INFO L85 PathProgramCache]: Analyzing trace with hash 691604643, now seen corresponding path program 1 times [2023-11-12 02:17:23,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:23,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082868650] [2023-11-12 02:17:23,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:23,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:23,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:23,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082868650] [2023-11-12 02:17:23,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082868650] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:23,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241845834] [2023-11-12 02:17:23,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:23,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:23,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:23,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:23,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:17:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:23,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:17:23,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:23,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:23,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241845834] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:23,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:23,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-12 02:17:23,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5287090] [2023-11-12 02:17:23,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:23,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:17:23,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:23,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:17:23,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:17:23,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 210 [2023-11-12 02:17:23,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 111 flow. Second operand has 8 states, 8 states have (on average 91.25) internal successors, (730), 8 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:23,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:23,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 210 [2023-11-12 02:17:23,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:24,598 INFO L124 PetriNetUnfolderBase]: 3133/4632 cut-off events. [2023-11-12 02:17:24,598 INFO L125 PetriNetUnfolderBase]: For 474/474 co-relation queries the response was YES. [2023-11-12 02:17:24,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11956 conditions, 4632 events. 3133/4632 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 22993 event pairs, 137 based on Foata normal form. 20/3648 useless extension candidates. Maximal degree in co-relation 10286. Up to 1454 conditions per place. [2023-11-12 02:17:24,647 INFO L140 encePairwiseOnDemand]: 198/210 looper letters, 110 selfloop transitions, 40 changer transitions 0/150 dead transitions. [2023-11-12 02:17:24,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 150 transitions, 777 flow [2023-11-12 02:17:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:17:24,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:17:24,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 869 transitions. [2023-11-12 02:17:24,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5172619047619048 [2023-11-12 02:17:24,652 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 869 transitions. [2023-11-12 02:17:24,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 869 transitions. [2023-11-12 02:17:24,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:24,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 869 transitions. [2023-11-12 02:17:24,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 108.625) internal successors, (869), 8 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:24,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 210.0) internal successors, (1890), 9 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:24,666 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 210.0) internal successors, (1890), 9 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:24,666 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 111 flow. Second operand 8 states and 869 transitions. [2023-11-12 02:17:24,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 150 transitions, 777 flow [2023-11-12 02:17:24,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 150 transitions, 774 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:24,676 INFO L231 Difference]: Finished difference. Result has 47 places, 68 transitions, 483 flow [2023-11-12 02:17:24,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=483, PETRI_PLACES=47, PETRI_TRANSITIONS=68} [2023-11-12 02:17:24,680 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2023-11-12 02:17:24,680 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 68 transitions, 483 flow [2023-11-12 02:17:24,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.25) internal successors, (730), 8 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:24,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:24,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:24,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:24,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:24,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:17:24,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:24,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1062838422, now seen corresponding path program 1 times [2023-11-12 02:17:24,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:24,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886579615] [2023-11-12 02:17:24,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:24,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:25,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:25,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886579615] [2023-11-12 02:17:25,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886579615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:25,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:25,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:17:25,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381908291] [2023-11-12 02:17:25,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:25,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:17:25,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:25,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:17:25,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:17:25,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 210 [2023-11-12 02:17:25,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 68 transitions, 483 flow. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:25,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:25,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 210 [2023-11-12 02:17:25,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:25,840 INFO L124 PetriNetUnfolderBase]: 3095/4666 cut-off events. [2023-11-12 02:17:25,840 INFO L125 PetriNetUnfolderBase]: For 5130/5130 co-relation queries the response was YES. [2023-11-12 02:17:25,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15655 conditions, 4666 events. 3095/4666 cut-off events. For 5130/5130 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 23992 event pairs, 204 based on Foata normal form. 100/4360 useless extension candidates. Maximal degree in co-relation 13808. Up to 3211 conditions per place. [2023-11-12 02:17:25,887 INFO L140 encePairwiseOnDemand]: 199/210 looper letters, 83 selfloop transitions, 16 changer transitions 0/99 dead transitions. [2023-11-12 02:17:25,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 99 transitions, 785 flow [2023-11-12 02:17:25,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:17:25,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:17:25,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 424 transitions. [2023-11-12 02:17:25,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2023-11-12 02:17:25,890 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 424 transitions. [2023-11-12 02:17:25,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 424 transitions. [2023-11-12 02:17:25,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:25,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 424 transitions. [2023-11-12 02:17:25,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:25,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:25,896 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:25,896 INFO L175 Difference]: Start difference. First operand has 47 places, 68 transitions, 483 flow. Second operand 4 states and 424 transitions. [2023-11-12 02:17:25,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 99 transitions, 785 flow [2023-11-12 02:17:25,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 99 transitions, 768 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:25,934 INFO L231 Difference]: Finished difference. Result has 51 places, 70 transitions, 573 flow [2023-11-12 02:17:25,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=573, PETRI_PLACES=51, PETRI_TRANSITIONS=70} [2023-11-12 02:17:25,935 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-11-12 02:17:25,936 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 70 transitions, 573 flow [2023-11-12 02:17:25,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:25,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:25,936 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-12 02:17:25,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:17:25,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:17:25,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:25,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1087853404, now seen corresponding path program 1 times [2023-11-12 02:17:25,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:25,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601405274] [2023-11-12 02:17:25,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:25,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:26,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:26,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601405274] [2023-11-12 02:17:26,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601405274] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:26,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773664056] [2023-11-12 02:17:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:26,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:26,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:26,071 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:26,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:17:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:26,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:17:26,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:26,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:26,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:26,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:17:26,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773664056] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:26,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:17:26,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 8 [2023-11-12 02:17:26,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553112539] [2023-11-12 02:17:26,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:26,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:26,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:26,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:26,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:17:26,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 210 [2023-11-12 02:17:26,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 70 transitions, 573 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:26,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:26,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 210 [2023-11-12 02:17:26,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:26,808 INFO L124 PetriNetUnfolderBase]: 2533/3870 cut-off events. [2023-11-12 02:17:26,809 INFO L125 PetriNetUnfolderBase]: For 7892/7892 co-relation queries the response was YES. [2023-11-12 02:17:26,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13808 conditions, 3870 events. 2533/3870 cut-off events. For 7892/7892 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 19792 event pairs, 1797 based on Foata normal form. 0/3808 useless extension candidates. Maximal degree in co-relation 6890. Up to 3870 conditions per place. [2023-11-12 02:17:26,846 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 61 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-11-12 02:17:26,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 62 transitions, 631 flow [2023-11-12 02:17:26,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-11-12 02:17:26,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2023-11-12 02:17:26,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-11-12 02:17:26,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-11-12 02:17:26,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:26,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-11-12 02:17:26,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:26,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:26,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:26,854 INFO L175 Difference]: Start difference. First operand has 51 places, 70 transitions, 573 flow. Second operand 3 states and 308 transitions. [2023-11-12 02:17:26,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 62 transitions, 631 flow [2023-11-12 02:17:26,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 62 transitions, 626 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:26,876 INFO L231 Difference]: Finished difference. Result has 50 places, 62 transitions, 504 flow [2023-11-12 02:17:26,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=50, PETRI_TRANSITIONS=62} [2023-11-12 02:17:26,877 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-11-12 02:17:26,877 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 62 transitions, 504 flow [2023-11-12 02:17:26,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:26,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:26,878 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-12 02:17:26,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:27,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:27,089 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:17:27,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:27,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1087853407, now seen corresponding path program 1 times [2023-11-12 02:17:27,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:27,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160849019] [2023-11-12 02:17:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:27,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:27,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:27,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160849019] [2023-11-12 02:17:27,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160849019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:27,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836386999] [2023-11-12 02:17:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:27,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:27,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:27,272 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:27,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:17:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:27,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:17:27,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:27,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:27,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836386999] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:27,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:27,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-11-12 02:17:27,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541755684] [2023-11-12 02:17:27,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:27,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:17:27,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:27,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:17:27,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:17:27,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 210 [2023-11-12 02:17:27,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 62 transitions, 504 flow. Second operand has 11 states, 11 states have (on average 92.18181818181819) internal successors, (1014), 11 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:27,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:27,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 210 [2023-11-12 02:17:27,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:29,073 INFO L124 PetriNetUnfolderBase]: 4093/6196 cut-off events. [2023-11-12 02:17:29,074 INFO L125 PetriNetUnfolderBase]: For 12414/12414 co-relation queries the response was YES. [2023-11-12 02:17:29,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21977 conditions, 6196 events. 4093/6196 cut-off events. For 12414/12414 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 32934 event pairs, 143 based on Foata normal form. 418/6466 useless extension candidates. Maximal degree in co-relation 21957. Up to 1723 conditions per place. [2023-11-12 02:17:29,132 INFO L140 encePairwiseOnDemand]: 200/210 looper letters, 174 selfloop transitions, 72 changer transitions 0/246 dead transitions. [2023-11-12 02:17:29,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 246 transitions, 1844 flow [2023-11-12 02:17:29,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:17:29,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-12 02:17:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1463 transitions. [2023-11-12 02:17:29,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976190476190476 [2023-11-12 02:17:29,141 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1463 transitions. [2023-11-12 02:17:29,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1463 transitions. [2023-11-12 02:17:29,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:29,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1463 transitions. [2023-11-12 02:17:29,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 104.5) internal successors, (1463), 14 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:29,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 210.0) internal successors, (3150), 15 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:29,158 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 210.0) internal successors, (3150), 15 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:29,158 INFO L175 Difference]: Start difference. First operand has 50 places, 62 transitions, 504 flow. Second operand 14 states and 1463 transitions. [2023-11-12 02:17:29,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 246 transitions, 1844 flow [2023-11-12 02:17:29,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 246 transitions, 1843 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:29,205 INFO L231 Difference]: Finished difference. Result has 68 places, 111 transitions, 1215 flow [2023-11-12 02:17:29,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1215, PETRI_PLACES=68, PETRI_TRANSITIONS=111} [2023-11-12 02:17:29,208 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 34 predicate places. [2023-11-12 02:17:29,209 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 111 transitions, 1215 flow [2023-11-12 02:17:29,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 92.18181818181819) internal successors, (1014), 11 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:29,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:29,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:29,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:29,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:29,416 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:17:29,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:29,417 INFO L85 PathProgramCache]: Analyzing trace with hash -52042401, now seen corresponding path program 1 times [2023-11-12 02:17:29,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:29,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560683567] [2023-11-12 02:17:29,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:29,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:29,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:29,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:29,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560683567] [2023-11-12 02:17:29,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560683567] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:29,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655052862] [2023-11-12 02:17:29,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:29,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:29,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:29,508 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:29,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:17:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:29,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:17:29,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:29,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:29,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655052862] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:29,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:29,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-12 02:17:29,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390890130] [2023-11-12 02:17:29,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:29,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:17:29,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:29,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:17:29,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:17:29,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 210 [2023-11-12 02:17:29,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 111 transitions, 1215 flow. Second operand has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:29,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:29,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 210 [2023-11-12 02:17:29,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:31,427 INFO L124 PetriNetUnfolderBase]: 4833/7354 cut-off events. [2023-11-12 02:17:31,428 INFO L125 PetriNetUnfolderBase]: For 29919/29919 co-relation queries the response was YES. [2023-11-12 02:17:31,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29314 conditions, 7354 events. 4833/7354 cut-off events. For 29919/29919 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 40082 event pairs, 199 based on Foata normal form. 528/7752 useless extension candidates. Maximal degree in co-relation 29287. Up to 3227 conditions per place. [2023-11-12 02:17:31,497 INFO L140 encePairwiseOnDemand]: 200/210 looper letters, 142 selfloop transitions, 76 changer transitions 0/218 dead transitions. [2023-11-12 02:17:31,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 218 transitions, 2257 flow [2023-11-12 02:17:31,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:17:31,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:17:31,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 837 transitions. [2023-11-12 02:17:31,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982142857142857 [2023-11-12 02:17:31,503 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 837 transitions. [2023-11-12 02:17:31,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 837 transitions. [2023-11-12 02:17:31,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:31,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 837 transitions. [2023-11-12 02:17:31,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 104.625) internal successors, (837), 8 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:31,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 210.0) internal successors, (1890), 9 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:31,512 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 210.0) internal successors, (1890), 9 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:31,512 INFO L175 Difference]: Start difference. First operand has 68 places, 111 transitions, 1215 flow. Second operand 8 states and 837 transitions. [2023-11-12 02:17:31,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 218 transitions, 2257 flow [2023-11-12 02:17:31,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 218 transitions, 2113 flow, removed 69 selfloop flow, removed 2 redundant places. [2023-11-12 02:17:31,713 INFO L231 Difference]: Finished difference. Result has 76 places, 138 transitions, 1657 flow [2023-11-12 02:17:31,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1657, PETRI_PLACES=76, PETRI_TRANSITIONS=138} [2023-11-12 02:17:31,715 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 42 predicate places. [2023-11-12 02:17:31,715 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 138 transitions, 1657 flow [2023-11-12 02:17:31,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:31,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:31,716 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:31,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-12 02:17:31,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 02:17:31,923 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:17:31,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:31,923 INFO L85 PathProgramCache]: Analyzing trace with hash 831559481, now seen corresponding path program 1 times [2023-11-12 02:17:31,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:31,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328427746] [2023-11-12 02:17:31,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:31,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:32,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:32,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:32,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328427746] [2023-11-12 02:17:32,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328427746] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:32,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945971036] [2023-11-12 02:17:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:32,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:32,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:32,160 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:32,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:17:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:32,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:17:32,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:32,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:33,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:33,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945971036] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:33,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:33,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 16 [2023-11-12 02:17:33,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322797581] [2023-11-12 02:17:33,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:33,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-12 02:17:33,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:33,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-12 02:17:33,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:17:33,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 210 [2023-11-12 02:17:33,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 138 transitions, 1657 flow. Second operand has 18 states, 18 states have (on average 86.0) internal successors, (1548), 18 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:33,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:33,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 210 [2023-11-12 02:17:33,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:37,626 INFO L124 PetriNetUnfolderBase]: 8775/12920 cut-off events. [2023-11-12 02:17:37,626 INFO L125 PetriNetUnfolderBase]: For 66876/66876 co-relation queries the response was YES. [2023-11-12 02:17:37,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59200 conditions, 12920 events. 8775/12920 cut-off events. For 66876/66876 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 73274 event pairs, 127 based on Foata normal form. 268/12848 useless extension candidates. Maximal degree in co-relation 59169. Up to 1943 conditions per place. [2023-11-12 02:17:37,765 INFO L140 encePairwiseOnDemand]: 199/210 looper letters, 298 selfloop transitions, 339 changer transitions 0/637 dead transitions. [2023-11-12 02:17:37,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 637 transitions, 6809 flow [2023-11-12 02:17:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-12 02:17:37,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-12 02:17:37,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3031 transitions. [2023-11-12 02:17:37,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46559139784946235 [2023-11-12 02:17:37,779 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3031 transitions. [2023-11-12 02:17:37,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3031 transitions. [2023-11-12 02:17:37,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:37,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3031 transitions. [2023-11-12 02:17:37,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 97.7741935483871) internal successors, (3031), 31 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:37,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 210.0) internal successors, (6720), 32 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:37,809 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 210.0) internal successors, (6720), 32 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:37,809 INFO L175 Difference]: Start difference. First operand has 76 places, 138 transitions, 1657 flow. Second operand 31 states and 3031 transitions. [2023-11-12 02:17:37,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 637 transitions, 6809 flow [2023-11-12 02:17:38,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 637 transitions, 6456 flow, removed 77 selfloop flow, removed 3 redundant places. [2023-11-12 02:17:38,078 INFO L231 Difference]: Finished difference. Result has 105 places, 390 transitions, 5428 flow [2023-11-12 02:17:38,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=5428, PETRI_PLACES=105, PETRI_TRANSITIONS=390} [2023-11-12 02:17:38,082 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 71 predicate places. [2023-11-12 02:17:38,082 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 390 transitions, 5428 flow [2023-11-12 02:17:38,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 86.0) internal successors, (1548), 18 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:38,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:38,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:38,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:38,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 02:17:38,298 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:17:38,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:38,299 INFO L85 PathProgramCache]: Analyzing trace with hash 836061851, now seen corresponding path program 1 times [2023-11-12 02:17:38,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:38,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399118174] [2023-11-12 02:17:38,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:38,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:38,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:38,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399118174] [2023-11-12 02:17:38,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399118174] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:38,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484780012] [2023-11-12 02:17:38,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:38,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:38,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:38,568 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:38,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:17:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:38,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-12 02:17:38,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:38,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:39,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:39,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484780012] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:39,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:39,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 16 [2023-11-12 02:17:39,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416341169] [2023-11-12 02:17:39,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:39,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-12 02:17:39,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:39,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-12 02:17:39,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:17:39,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 210 [2023-11-12 02:17:39,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 390 transitions, 5428 flow. Second operand has 18 states, 18 states have (on average 86.0) internal successors, (1548), 18 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:39,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:39,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 210 [2023-11-12 02:17:39,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:45,029 INFO L124 PetriNetUnfolderBase]: 14361/20510 cut-off events. [2023-11-12 02:17:45,029 INFO L125 PetriNetUnfolderBase]: For 144930/144930 co-relation queries the response was YES. [2023-11-12 02:17:45,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101397 conditions, 20510 events. 14361/20510 cut-off events. For 144930/144930 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 117093 event pairs, 461 based on Foata normal form. 810/20544 useless extension candidates. Maximal degree in co-relation 101363. Up to 4512 conditions per place. [2023-11-12 02:17:45,218 INFO L140 encePairwiseOnDemand]: 199/210 looper letters, 365 selfloop transitions, 643 changer transitions 0/1008 dead transitions. [2023-11-12 02:17:45,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 1008 transitions, 13754 flow [2023-11-12 02:17:45,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-12 02:17:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-12 02:17:45,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2467 transitions. [2023-11-12 02:17:45,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699047619047619 [2023-11-12 02:17:45,230 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2467 transitions. [2023-11-12 02:17:45,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2467 transitions. [2023-11-12 02:17:45,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:45,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2467 transitions. [2023-11-12 02:17:45,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 98.68) internal successors, (2467), 25 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:45,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 210.0) internal successors, (5460), 26 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:45,254 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 210.0) internal successors, (5460), 26 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:45,255 INFO L175 Difference]: Start difference. First operand has 105 places, 390 transitions, 5428 flow. Second operand 25 states and 2467 transitions. [2023-11-12 02:17:45,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 1008 transitions, 13754 flow [2023-11-12 02:17:46,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 1008 transitions, 12167 flow, removed 775 selfloop flow, removed 4 redundant places. [2023-11-12 02:17:46,880 INFO L231 Difference]: Finished difference. Result has 135 places, 767 transitions, 11557 flow [2023-11-12 02:17:46,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4574, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=11557, PETRI_PLACES=135, PETRI_TRANSITIONS=767} [2023-11-12 02:17:46,882 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 101 predicate places. [2023-11-12 02:17:46,882 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 767 transitions, 11557 flow [2023-11-12 02:17:46,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 86.0) internal successors, (1548), 18 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:46,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:46,883 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:46,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:47,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-12 02:17:47,089 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:17:47,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:47,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1057673170, now seen corresponding path program 1 times [2023-11-12 02:17:47,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:47,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593700264] [2023-11-12 02:17:47,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:47,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:47,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:47,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:47,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593700264] [2023-11-12 02:17:47,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593700264] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:47,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620716537] [2023-11-12 02:17:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:47,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:47,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:47,282 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:47,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c316fba5-1797-480d-9070-9b3c68a669c0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:17:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:47,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:17:47,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:47,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:48,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:48,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620716537] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:48,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:48,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 16 [2023-11-12 02:17:48,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709627888] [2023-11-12 02:17:48,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:48,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-12 02:17:48,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:48,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-12 02:17:48,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=192, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:17:48,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 210 [2023-11-12 02:17:48,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 767 transitions, 11557 flow. Second operand has 18 states, 18 states have (on average 86.0) internal successors, (1548), 18 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:48,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:48,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 210 [2023-11-12 02:17:48,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:00,684 INFO L124 PetriNetUnfolderBase]: 27609/38214 cut-off events. [2023-11-12 02:18:00,685 INFO L125 PetriNetUnfolderBase]: For 276190/276190 co-relation queries the response was YES. [2023-11-12 02:18:00,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199936 conditions, 38214 events. 27609/38214 cut-off events. For 276190/276190 co-relation queries the response was YES. Maximal size of possible extension queue 1517. Compared 224562 event pairs, 517 based on Foata normal form. 836/37740 useless extension candidates. Maximal degree in co-relation 199893. Up to 7498 conditions per place. [2023-11-12 02:18:01,256 INFO L140 encePairwiseOnDemand]: 199/210 looper letters, 445 selfloop transitions, 1566 changer transitions 0/2011 dead transitions. [2023-11-12 02:18:01,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 2011 transitions, 30292 flow [2023-11-12 02:18:01,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-12 02:18:01,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-12 02:18:01,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3611 transitions. [2023-11-12 02:18:01,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46473616473616475 [2023-11-12 02:18:01,269 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3611 transitions. [2023-11-12 02:18:01,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3611 transitions. [2023-11-12 02:18:01,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:01,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3611 transitions. [2023-11-12 02:18:01,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 97.5945945945946) internal successors, (3611), 37 states have internal predecessors, (3611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:01,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:01,300 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:01,300 INFO L175 Difference]: Start difference. First operand has 135 places, 767 transitions, 11557 flow. Second operand 37 states and 3611 transitions. [2023-11-12 02:18:01,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 2011 transitions, 30292 flow