./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:04:57,761 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:04:57,887 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:04:57,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:04:57,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:04:57,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:04:57,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:04:57,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:04:57,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:04:57,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:04:57,949 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:04:57,950 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:04:57,950 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:04:57,952 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:04:57,953 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:04:57,953 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:04:57,954 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:04:57,954 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:04:57,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:04:57,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:04:57,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:04:57,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:04:57,957 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:04:57,957 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:04:57,958 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:04:57,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:04:57,959 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:04:57,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:04:57,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:04:57,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:04:57,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:04:57,963 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:04:57,963 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:04:57,964 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:04:57,964 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:04:57,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:04:57,965 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:04:57,965 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:04:57,965 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:04:57,966 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:04:57,966 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:04:57,966 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_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d [2023-11-06 23:04:58,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:04:58,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:04:58,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:04:58,326 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:04:58,326 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:04:58,327 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2023-11-06 23:05:01,424 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:05:01,666 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:05:01,666 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2023-11-06 23:05:01,676 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/data/3601401d6/43470acc82a14da08c327b150a247fba/FLAGe86a3d93c [2023-11-06 23:05:01,691 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/data/3601401d6/43470acc82a14da08c327b150a247fba [2023-11-06 23:05:01,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:05:01,695 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:05:01,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:05:01,697 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:05:01,702 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:05:01,703 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:05:01" (1/1) ... [2023-11-06 23:05:01,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f7138f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:01, skipping insertion in model container [2023-11-06 23:05:01,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:05:01" (1/1) ... [2023-11-06 23:05:01,750 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:05:02,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:05:02,028 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:05:02,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:05:02,096 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:05:02,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:02 WrapperNode [2023-11-06 23:05:02,097 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:05:02,098 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:05:02,099 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:05:02,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:05:02,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:02" (1/1) ... [2023-11-06 23:05:02,119 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:02" (1/1) ... [2023-11-06 23:05:02,169 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 368 [2023-11-06 23:05:02,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:05:02,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:05:02,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:05:02,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:05:02,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:02" (1/1) ... [2023-11-06 23:05:02,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:02" (1/1) ... [2023-11-06 23:05:02,202 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:02" (1/1) ... [2023-11-06 23:05:02,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:02" (1/1) ... [2023-11-06 23:05:02,239 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:02" (1/1) ... [2023-11-06 23:05:02,245 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:02" (1/1) ... [2023-11-06 23:05:02,248 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:02" (1/1) ... [2023-11-06 23:05:02,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:02" (1/1) ... [2023-11-06 23:05:02,271 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:05:02,272 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:05:02,272 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:05:02,272 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:05:02,273 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:02" (1/1) ... [2023-11-06 23:05:02,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:05:02,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:02,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:05:02,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:05:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:05:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:05:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:05:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:05:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:05:02,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:05:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:05:02,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:05:02,369 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 23:05:02,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 23:05:02,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:05:02,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:05:02,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:05:02,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:05:02,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:05:02,374 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:05:02,564 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:05:02,566 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:05:03,200 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:05:03,217 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:05:03,217 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 23:05:03,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:05:03 BoogieIcfgContainer [2023-11-06 23:05:03,221 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:05:03,223 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:05:03,224 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:05:03,227 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:05:03,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:05:01" (1/3) ... [2023-11-06 23:05:03,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a9fee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:05:03, skipping insertion in model container [2023-11-06 23:05:03,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:02" (2/3) ... [2023-11-06 23:05:03,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a9fee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:05:03, skipping insertion in model container [2023-11-06 23:05:03,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:05:03" (3/3) ... [2023-11-06 23:05:03,230 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2023-11-06 23:05:03,239 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:05:03,250 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:05:03,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-06 23:05:03,250 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:05:03,443 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 23:05:03,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 453 places, 475 transitions, 971 flow [2023-11-06 23:05:03,844 INFO L124 PetriNetUnfolderBase]: 32/472 cut-off events. [2023-11-06 23:05:03,845 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:05:03,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 472 events. 32/472 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1334 event pairs, 0 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 345. Up to 2 conditions per place. [2023-11-06 23:05:03,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 453 places, 475 transitions, 971 flow [2023-11-06 23:05:03,884 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 427 places, 448 transitions, 911 flow [2023-11-06 23:05:03,888 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:05:03,898 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 427 places, 448 transitions, 911 flow [2023-11-06 23:05:03,901 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 427 places, 448 transitions, 911 flow [2023-11-06 23:05:03,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 448 transitions, 911 flow [2023-11-06 23:05:04,043 INFO L124 PetriNetUnfolderBase]: 31/448 cut-off events. [2023-11-06 23:05:04,043 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:05:04,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 448 events. 31/448 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1333 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 345. Up to 2 conditions per place. [2023-11-06 23:05:04,090 INFO L119 LiptonReduction]: Number of co-enabled transitions 63438 [2023-11-06 23:05:30,330 INFO L134 LiptonReduction]: Checked pairs total: 59389 [2023-11-06 23:05:30,331 INFO L136 LiptonReduction]: Total number of compositions: 575 [2023-11-06 23:05:30,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:05:30,353 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b8d7ed8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:05:30,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-11-06 23:05:30,357 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:05:30,357 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-11-06 23:05:30,357 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:05:30,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:30,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:05:30,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:30,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:30,364 INFO L85 PathProgramCache]: Analyzing trace with hash 63067, now seen corresponding path program 1 times [2023-11-06 23:05:30,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:30,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633969680] [2023-11-06 23:05:30,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:30,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:30,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:30,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:30,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633969680] [2023-11-06 23:05:30,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633969680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:30,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:30,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:05:30,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211391411] [2023-11-06 23:05:30,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:30,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:30,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:30,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:30,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:30,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 1050 [2023-11-06 23:05:30,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 444.6666666666667) internal successors, (1334), 3 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:30,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:30,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 1050 [2023-11-06 23:05:30,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:31,822 INFO L124 PetriNetUnfolderBase]: 3107/4424 cut-off events. [2023-11-06 23:05:31,822 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2023-11-06 23:05:31,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9071 conditions, 4424 events. 3107/4424 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 20870 event pairs, 2653 based on Foata normal form. 0/1708 useless extension candidates. Maximal degree in co-relation 8144. Up to 4424 conditions per place. [2023-11-06 23:05:31,860 INFO L140 encePairwiseOnDemand]: 1036/1050 looper letters, 38 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-11-06 23:05:31,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 179 flow [2023-11-06 23:05:31,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1384 transitions. [2023-11-06 23:05:31,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43936507936507935 [2023-11-06 23:05:31,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1384 transitions. [2023-11-06 23:05:31,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1384 transitions. [2023-11-06 23:05:31,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:31,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1384 transitions. [2023-11-06 23:05:31,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 461.3333333333333) internal successors, (1384), 3 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:31,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:31,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:31,923 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 111 flow. Second operand 3 states and 1384 transitions. [2023-11-06 23:05:31,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 179 flow [2023-11-06 23:05:31,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 23:05:31,939 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 105 flow [2023-11-06 23:05:31,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-11-06 23:05:31,946 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-11-06 23:05:31,946 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 105 flow [2023-11-06 23:05:31,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 444.6666666666667) internal successors, (1334), 3 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:31,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:31,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:05:31,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:05:31,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:31,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:31,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1956888, now seen corresponding path program 1 times [2023-11-06 23:05:31,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:31,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126312501] [2023-11-06 23:05:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:31,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:32,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:32,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:32,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126312501] [2023-11-06 23:05:32,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126312501] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:32,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204248261] [2023-11-06 23:05:32,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:32,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:32,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:32,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:32,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:05:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:32,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:05:32,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:32,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:32,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:32,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:32,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204248261] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:32,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:32,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 23:05:32,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655423304] [2023-11-06 23:05:32,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:32,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:05:32,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:32,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:05:32,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:05:32,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 1050 [2023-11-06 23:05:32,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 105 flow. Second operand has 7 states, 7 states have (on average 445.14285714285717) internal successors, (3116), 7 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:32,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:32,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 1050 [2023-11-06 23:05:32,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:33,413 INFO L124 PetriNetUnfolderBase]: 3113/4433 cut-off events. [2023-11-06 23:05:33,413 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 23:05:33,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9025 conditions, 4433 events. 3113/4433 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 21123 event pairs, 2653 based on Foata normal form. 0/1711 useless extension candidates. Maximal degree in co-relation 8971. Up to 4426 conditions per place. [2023-11-06 23:05:33,452 INFO L140 encePairwiseOnDemand]: 1045/1050 looper letters, 37 selfloop transitions, 13 changer transitions 0/50 dead transitions. [2023-11-06 23:05:33,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 50 transitions, 241 flow [2023-11-06 23:05:33,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:05:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:05:33,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3161 transitions. [2023-11-06 23:05:33,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43006802721088433 [2023-11-06 23:05:33,465 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3161 transitions. [2023-11-06 23:05:33,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3161 transitions. [2023-11-06 23:05:33,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:33,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3161 transitions. [2023-11-06 23:05:33,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 451.57142857142856) internal successors, (3161), 7 states have internal predecessors, (3161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:33,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1050.0) internal successors, (8400), 8 states have internal predecessors, (8400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:33,502 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1050.0) internal successors, (8400), 8 states have internal predecessors, (8400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:33,502 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 105 flow. Second operand 7 states and 3161 transitions. [2023-11-06 23:05:33,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 50 transitions, 241 flow [2023-11-06 23:05:33,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 236 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 23:05:33,505 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 184 flow [2023-11-06 23:05:33,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=184, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-11-06 23:05:33,506 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-11-06 23:05:33,507 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 184 flow [2023-11-06 23:05:33,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 445.14285714285717) internal successors, (3116), 7 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:33,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:33,510 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-06 23:05:33,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 23:05:33,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 23:05:33,717 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:33,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:33,718 INFO L85 PathProgramCache]: Analyzing trace with hash 60665337, now seen corresponding path program 1 times [2023-11-06 23:05:33,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:33,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472856452] [2023-11-06 23:05:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:33,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:05:33,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:33,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472856452] [2023-11-06 23:05:33,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472856452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:33,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:33,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:05:33,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421265388] [2023-11-06 23:05:33,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:33,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:33,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:33,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:33,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:33,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 1050 [2023-11-06 23:05:33,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 445.3333333333333) internal successors, (1336), 3 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:33,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:33,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 1050 [2023-11-06 23:05:33,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:34,782 INFO L124 PetriNetUnfolderBase]: 3110/4429 cut-off events. [2023-11-06 23:05:34,783 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-06 23:05:34,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9033 conditions, 4429 events. 3110/4429 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 21122 event pairs, 2653 based on Foata normal form. 0/1715 useless extension candidates. Maximal degree in co-relation 8997. Up to 4423 conditions per place. [2023-11-06 23:05:34,827 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 40 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2023-11-06 23:05:34,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 249 flow [2023-11-06 23:05:34,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:34,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:34,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1371 transitions. [2023-11-06 23:05:34,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43523809523809526 [2023-11-06 23:05:34,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1371 transitions. [2023-11-06 23:05:34,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1371 transitions. [2023-11-06 23:05:34,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:34,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1371 transitions. [2023-11-06 23:05:34,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 457.0) internal successors, (1371), 3 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:34,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:34,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:34,854 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 184 flow. Second operand 3 states and 1371 transitions. [2023-11-06 23:05:34,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 249 flow [2023-11-06 23:05:34,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 228 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 23:05:34,860 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 148 flow [2023-11-06 23:05:34,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-06 23:05:34,862 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-11-06 23:05:34,862 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 148 flow [2023-11-06 23:05:34,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 445.3333333333333) internal successors, (1336), 3 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:34,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:34,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:05:34,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:05:34,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:34,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:34,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1880003566, now seen corresponding path program 1 times [2023-11-06 23:05:34,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:34,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715469075] [2023-11-06 23:05:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:34,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:34,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:34,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715469075] [2023-11-06 23:05:34,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715469075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:34,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:34,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:05:34,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559772122] [2023-11-06 23:05:34,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:34,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:34,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:34,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:34,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:34,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1050 [2023-11-06 23:05:34,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 446.6666666666667) internal successors, (1340), 3 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:34,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:34,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1050 [2023-11-06 23:05:34,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:36,256 INFO L124 PetriNetUnfolderBase]: 4090/5845 cut-off events. [2023-11-06 23:05:36,256 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-11-06 23:05:36,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11896 conditions, 5845 events. 4090/5845 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 30482 event pairs, 2653 based on Foata normal form. 0/2375 useless extension candidates. Maximal degree in co-relation 11862. Up to 4430 conditions per place. [2023-11-06 23:05:36,302 INFO L140 encePairwiseOnDemand]: 1043/1050 looper letters, 71 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-11-06 23:05:36,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 73 transitions, 353 flow [2023-11-06 23:05:36,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:36,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1405 transitions. [2023-11-06 23:05:36,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44603174603174606 [2023-11-06 23:05:36,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1405 transitions. [2023-11-06 23:05:36,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1405 transitions. [2023-11-06 23:05:36,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:36,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1405 transitions. [2023-11-06 23:05:36,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 468.3333333333333) internal successors, (1405), 3 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:36,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:36,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:36,370 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 148 flow. Second operand 3 states and 1405 transitions. [2023-11-06 23:05:36,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 73 transitions, 353 flow [2023-11-06 23:05:36,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 73 transitions, 341 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:05:36,375 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 156 flow [2023-11-06 23:05:36,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-11-06 23:05:36,377 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-11-06 23:05:36,377 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 156 flow [2023-11-06 23:05:36,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 446.6666666666667) internal successors, (1340), 3 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:36,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:36,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:05:36,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:05:36,383 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:36,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:36,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1849428784, now seen corresponding path program 1 times [2023-11-06 23:05:36,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:36,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866573632] [2023-11-06 23:05:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:36,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:36,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:05:36,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866573632] [2023-11-06 23:05:36,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866573632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:36,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:36,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:05:36,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598478131] [2023-11-06 23:05:36,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:36,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:36,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:36,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:36,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:36,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 443 out of 1050 [2023-11-06 23:05:36,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 445.0) internal successors, (1335), 3 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:36,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:36,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 443 of 1050 [2023-11-06 23:05:36,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:37,621 INFO L124 PetriNetUnfolderBase]: 4089/5844 cut-off events. [2023-11-06 23:05:37,622 INFO L125 PetriNetUnfolderBase]: For 826/826 co-relation queries the response was YES. [2023-11-06 23:05:37,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13201 conditions, 5844 events. 4089/5844 cut-off events. For 826/826 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 29336 event pairs, 3531 based on Foata normal form. 1/2666 useless extension candidates. Maximal degree in co-relation 13172. Up to 5844 conditions per place. [2023-11-06 23:05:37,661 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 44 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-06 23:05:37,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 243 flow [2023-11-06 23:05:37,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:37,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1369 transitions. [2023-11-06 23:05:37,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346031746031746 [2023-11-06 23:05:37,670 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1369 transitions. [2023-11-06 23:05:37,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1369 transitions. [2023-11-06 23:05:37,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:37,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1369 transitions. [2023-11-06 23:05:37,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 456.3333333333333) internal successors, (1369), 3 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:37,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:37,685 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:37,685 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 156 flow. Second operand 3 states and 1369 transitions. [2023-11-06 23:05:37,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 243 flow [2023-11-06 23:05:37,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 241 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:05:37,689 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 153 flow [2023-11-06 23:05:37,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-11-06 23:05:37,693 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-11-06 23:05:37,693 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 153 flow [2023-11-06 23:05:37,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 445.0) internal successors, (1335), 3 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:37,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:37,694 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 23:05:37,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:05:37,695 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:37,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:37,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1830093413, now seen corresponding path program 2 times [2023-11-06 23:05:37,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:37,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443850833] [2023-11-06 23:05:37,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:37,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:37,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:37,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443850833] [2023-11-06 23:05:37,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443850833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:37,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373550468] [2023-11-06 23:05:37,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:05:37,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:37,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:37,860 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:37,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:05:38,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:05:38,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:05:38,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:05:38,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:05:38,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:38,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373550468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:38,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:05:38,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 23:05:38,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79246963] [2023-11-06 23:05:38,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:38,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:38,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:38,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:38,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:05:38,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 446 out of 1050 [2023-11-06 23:05:38,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 447.0) internal successors, (1341), 3 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:38,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:38,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 446 of 1050 [2023-11-06 23:05:38,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:39,298 INFO L124 PetriNetUnfolderBase]: 4089/5843 cut-off events. [2023-11-06 23:05:39,299 INFO L125 PetriNetUnfolderBase]: For 535/535 co-relation queries the response was YES. [2023-11-06 23:05:39,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13051 conditions, 5843 events. 4089/5843 cut-off events. For 535/535 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 29363 event pairs, 3531 based on Foata normal form. 1/2665 useless extension candidates. Maximal degree in co-relation 13034. Up to 5838 conditions per place. [2023-11-06 23:05:39,349 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 40 selfloop transitions, 5 changer transitions 0/45 dead transitions. [2023-11-06 23:05:39,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 233 flow [2023-11-06 23:05:39,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:39,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1376 transitions. [2023-11-06 23:05:39,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43682539682539684 [2023-11-06 23:05:39,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1376 transitions. [2023-11-06 23:05:39,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1376 transitions. [2023-11-06 23:05:39,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:39,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1376 transitions. [2023-11-06 23:05:39,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 458.6666666666667) internal successors, (1376), 3 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:39,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:39,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:39,394 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 153 flow. Second operand 3 states and 1376 transitions. [2023-11-06 23:05:39,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 233 flow [2023-11-06 23:05:39,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 214 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-06 23:05:39,397 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 134 flow [2023-11-06 23:05:39,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-11-06 23:05:39,398 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-11-06 23:05:39,399 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 134 flow [2023-11-06 23:05:39,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 447.0) internal successors, (1341), 3 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:39,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:39,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:39,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:39,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 23:05:39,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:39,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:39,608 INFO L85 PathProgramCache]: Analyzing trace with hash -917654515, now seen corresponding path program 1 times [2023-11-06 23:05:39,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:39,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513477233] [2023-11-06 23:05:39,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:39,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:05:39,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:39,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513477233] [2023-11-06 23:05:39,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513477233] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:39,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429806478] [2023-11-06 23:05:39,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:39,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:39,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:39,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:39,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:05:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:05:39,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:39,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:05:39,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:05:39,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429806478] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:39,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:39,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 23:05:39,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068899082] [2023-11-06 23:05:39,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:39,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:05:39,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:39,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:05:39,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:05:40,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 441 out of 1050 [2023-11-06 23:05:40,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 442.85714285714283) internal successors, (3100), 7 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:40,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:40,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 441 of 1050 [2023-11-06 23:05:40,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:40,997 INFO L124 PetriNetUnfolderBase]: 4087/5841 cut-off events. [2023-11-06 23:05:40,997 INFO L125 PetriNetUnfolderBase]: For 532/532 co-relation queries the response was YES. [2023-11-06 23:05:41,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13033 conditions, 5841 events. 4087/5841 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 29359 event pairs, 3531 based on Foata normal form. 2/2665 useless extension candidates. Maximal degree in co-relation 13005. Up to 5839 conditions per place. [2023-11-06 23:05:41,042 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 39 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-11-06 23:05:41,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 208 flow [2023-11-06 23:05:41,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:05:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2247 transitions. [2023-11-06 23:05:41,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428 [2023-11-06 23:05:41,052 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2247 transitions. [2023-11-06 23:05:41,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2247 transitions. [2023-11-06 23:05:41,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:41,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2247 transitions. [2023-11-06 23:05:41,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 449.4) internal successors, (2247), 5 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:41,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1050.0) internal successors, (6300), 6 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:41,074 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1050.0) internal successors, (6300), 6 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:41,074 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 134 flow. Second operand 5 states and 2247 transitions. [2023-11-06 23:05:41,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 208 flow [2023-11-06 23:05:41,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:05:41,079 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 124 flow [2023-11-06 23:05:41,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-11-06 23:05:41,080 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-11-06 23:05:41,080 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 124 flow [2023-11-06 23:05:41,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 442.85714285714283) internal successors, (3100), 7 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:41,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:41,082 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:41,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 23:05:41,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 23:05:41,288 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:41,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:41,288 INFO L85 PathProgramCache]: Analyzing trace with hash -15548307, now seen corresponding path program 2 times [2023-11-06 23:05:41,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:41,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82986560] [2023-11-06 23:05:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:41,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:41,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:05:41,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:41,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82986560] [2023-11-06 23:05:41,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82986560] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:41,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656567384] [2023-11-06 23:05:41,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:05:41,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:41,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:41,445 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:41,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:05:41,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:05:41,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:05:41,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:05:41,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 23:05:41,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:41,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656567384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:41,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:05:41,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-11-06 23:05:41,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699554613] [2023-11-06 23:05:41,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:41,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:41,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:41,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:41,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:41,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 447 out of 1050 [2023-11-06 23:05:41,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:41,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:41,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 447 of 1050 [2023-11-06 23:05:41,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:42,358 INFO L124 PetriNetUnfolderBase]: 3305/4733 cut-off events. [2023-11-06 23:05:42,358 INFO L125 PetriNetUnfolderBase]: For 464/464 co-relation queries the response was YES. [2023-11-06 23:05:42,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10543 conditions, 4733 events. 3305/4733 cut-off events. For 464/464 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 22816 event pairs, 2821 based on Foata normal form. 0/2280 useless extension candidates. Maximal degree in co-relation 10525. Up to 4733 conditions per place. [2023-11-06 23:05:42,387 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-11-06 23:05:42,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 200 flow [2023-11-06 23:05:42,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:42,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:42,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1378 transitions. [2023-11-06 23:05:42,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43746031746031744 [2023-11-06 23:05:42,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1378 transitions. [2023-11-06 23:05:42,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1378 transitions. [2023-11-06 23:05:42,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:42,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1378 transitions. [2023-11-06 23:05:42,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 459.3333333333333) internal successors, (1378), 3 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:42,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:42,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:42,407 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 124 flow. Second operand 3 states and 1378 transitions. [2023-11-06 23:05:42,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 200 flow [2023-11-06 23:05:42,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 192 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 23:05:42,409 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 112 flow [2023-11-06 23:05:42,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-11-06 23:05:42,412 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2023-11-06 23:05:42,412 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 112 flow [2023-11-06 23:05:42,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:42,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:42,413 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:42,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:42,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:42,620 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:42,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:42,621 INFO L85 PathProgramCache]: Analyzing trace with hash -15548308, now seen corresponding path program 1 times [2023-11-06 23:05:42,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:42,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704592859] [2023-11-06 23:05:42,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:42,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:05:42,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:42,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704592859] [2023-11-06 23:05:42,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704592859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:42,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353498611] [2023-11-06 23:05:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:42,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:42,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:42,719 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:42,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:05:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:05:42,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 23:05:42,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:42,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353498611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:42,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:05:42,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-11-06 23:05:42,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787251293] [2023-11-06 23:05:42,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:42,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:42,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:42,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:42,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:42,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 447 out of 1050 [2023-11-06 23:05:42,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:42,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:42,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 447 of 1050 [2023-11-06 23:05:42,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:43,477 INFO L124 PetriNetUnfolderBase]: 2623/3765 cut-off events. [2023-11-06 23:05:43,477 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2023-11-06 23:05:43,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8345 conditions, 3765 events. 2623/3765 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 17410 event pairs, 2207 based on Foata normal form. 0/1922 useless extension candidates. Maximal degree in co-relation 8336. Up to 3765 conditions per place. [2023-11-06 23:05:43,499 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-11-06 23:05:43,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 184 flow [2023-11-06 23:05:43,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:43,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:43,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1376 transitions. [2023-11-06 23:05:43,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43682539682539684 [2023-11-06 23:05:43,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1376 transitions. [2023-11-06 23:05:43,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1376 transitions. [2023-11-06 23:05:43,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:43,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1376 transitions. [2023-11-06 23:05:43,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 458.6666666666667) internal successors, (1376), 3 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:43,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:43,519 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:43,520 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 112 flow. Second operand 3 states and 1376 transitions. [2023-11-06 23:05:43,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 184 flow [2023-11-06 23:05:43,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:05:43,521 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 107 flow [2023-11-06 23:05:43,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-11-06 23:05:43,522 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2023-11-06 23:05:43,522 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 107 flow [2023-11-06 23:05:43,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:43,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:43,523 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:43,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:43,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:43,730 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:43,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:43,731 INFO L85 PathProgramCache]: Analyzing trace with hash -15548323, now seen corresponding path program 1 times [2023-11-06 23:05:43,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:43,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952560167] [2023-11-06 23:05:43,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:43,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:05:43,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:43,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952560167] [2023-11-06 23:05:43,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952560167] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:43,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583231324] [2023-11-06 23:05:43,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:43,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:43,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:43,810 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:43,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:05:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:05:43,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:05:43,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:43,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583231324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:43,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:05:43,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 23:05:43,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699857685] [2023-11-06 23:05:43,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:43,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:05:43,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:43,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:05:43,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:44,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1050 [2023-11-06 23:05:44,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 446.75) internal successors, (1787), 4 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:44,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:44,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1050 [2023-11-06 23:05:44,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:44,688 INFO L124 PetriNetUnfolderBase]: 2348/3376 cut-off events. [2023-11-06 23:05:44,688 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-11-06 23:05:44,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7439 conditions, 3376 events. 2348/3376 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 17223 event pairs, 132 based on Foata normal form. 0/1797 useless extension candidates. Maximal degree in co-relation 7429. Up to 1992 conditions per place. [2023-11-06 23:05:44,705 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 79 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-11-06 23:05:44,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 81 transitions, 359 flow [2023-11-06 23:05:44,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:05:44,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:05:44,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1857 transitions. [2023-11-06 23:05:44,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421428571428571 [2023-11-06 23:05:44,715 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1857 transitions. [2023-11-06 23:05:44,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1857 transitions. [2023-11-06 23:05:44,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:44,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1857 transitions. [2023-11-06 23:05:44,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 464.25) internal successors, (1857), 4 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:44,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1050.0) internal successors, (5250), 5 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:44,734 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1050.0) internal successors, (5250), 5 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:44,735 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 107 flow. Second operand 4 states and 1857 transitions. [2023-11-06 23:05:44,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 81 transitions, 359 flow [2023-11-06 23:05:44,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 81 transitions, 358 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:05:44,738 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 106 flow [2023-11-06 23:05:44,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-11-06 23:05:44,739 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2023-11-06 23:05:44,739 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 106 flow [2023-11-06 23:05:44,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 446.75) internal successors, (1787), 4 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:44,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:44,740 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:44,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:44,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 23:05:44,946 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:44,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:44,946 INFO L85 PathProgramCache]: Analyzing trace with hash -15548306, now seen corresponding path program 1 times [2023-11-06 23:05:44,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:44,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959007527] [2023-11-06 23:05:44,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:44,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:05:45,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:45,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959007527] [2023-11-06 23:05:45,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959007527] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:45,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736569933] [2023-11-06 23:05:45,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:45,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:45,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:45,048 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:45,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:05:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:05:45,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 23:05:45,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:45,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736569933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:45,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:05:45,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-11-06 23:05:45,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139808490] [2023-11-06 23:05:45,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:45,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:45,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:45,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:45,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:45,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 447 out of 1050 [2023-11-06 23:05:45,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:45,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:45,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 447 of 1050 [2023-11-06 23:05:45,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:45,782 INFO L124 PetriNetUnfolderBase]: 1803/2601 cut-off events. [2023-11-06 23:05:45,782 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2023-11-06 23:05:45,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 2601 events. 1803/2601 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 11092 event pairs, 1477 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 5894. Up to 2601 conditions per place. [2023-11-06 23:05:45,792 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-11-06 23:05:45,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 172 flow [2023-11-06 23:05:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1373 transitions. [2023-11-06 23:05:45,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43587301587301586 [2023-11-06 23:05:45,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1373 transitions. [2023-11-06 23:05:45,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1373 transitions. [2023-11-06 23:05:45,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:45,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1373 transitions. [2023-11-06 23:05:45,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 457.6666666666667) internal successors, (1373), 3 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:45,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:45,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:45,813 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 106 flow. Second operand 3 states and 1373 transitions. [2023-11-06 23:05:45,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 172 flow [2023-11-06 23:05:45,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 36 transitions, 169 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:05:45,815 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 99 flow [2023-11-06 23:05:45,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-11-06 23:05:45,816 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-11-06 23:05:45,816 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 99 flow [2023-11-06 23:05:45,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:45,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:45,817 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:45,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-06 23:05:46,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 23:05:46,024 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:46,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:46,025 INFO L85 PathProgramCache]: Analyzing trace with hash -15548352, now seen corresponding path program 1 times [2023-11-06 23:05:46,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:46,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228062017] [2023-11-06 23:05:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:46,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:05:46,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:46,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228062017] [2023-11-06 23:05:46,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228062017] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:46,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140096696] [2023-11-06 23:05:46,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:46,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:46,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:46,105 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:46,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:05:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:46,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:05:46,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 23:05:46,278 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:46,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140096696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:46,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:05:46,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-11-06 23:05:46,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803588884] [2023-11-06 23:05:46,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:46,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:46,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:46,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:46,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:46,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 447 out of 1050 [2023-11-06 23:05:46,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:46,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:46,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 447 of 1050 [2023-11-06 23:05:46,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:46,591 INFO L124 PetriNetUnfolderBase]: 1345/1949 cut-off events. [2023-11-06 23:05:46,591 INFO L125 PetriNetUnfolderBase]: For 300/300 co-relation queries the response was YES. [2023-11-06 23:05:46,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4320 conditions, 1949 events. 1345/1949 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7842 event pairs, 1075 based on Foata normal form. 0/1220 useless extension candidates. Maximal degree in co-relation 4309. Up to 1949 conditions per place. [2023-11-06 23:05:46,597 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 33 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-11-06 23:05:46,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 161 flow [2023-11-06 23:05:46,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:46,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1371 transitions. [2023-11-06 23:05:46,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43523809523809526 [2023-11-06 23:05:46,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1371 transitions. [2023-11-06 23:05:46,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1371 transitions. [2023-11-06 23:05:46,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:46,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1371 transitions. [2023-11-06 23:05:46,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 457.0) internal successors, (1371), 3 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:46,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:46,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:46,616 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 99 flow. Second operand 3 states and 1371 transitions. [2023-11-06 23:05:46,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 161 flow [2023-11-06 23:05:46,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 34 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:05:46,617 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 94 flow [2023-11-06 23:05:46,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2023-11-06 23:05:46,618 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -12 predicate places. [2023-11-06 23:05:46,618 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 94 flow [2023-11-06 23:05:46,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:46,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:46,619 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:46,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:46,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 23:05:46,825 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:46,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:46,825 INFO L85 PathProgramCache]: Analyzing trace with hash -483191167, now seen corresponding path program 1 times [2023-11-06 23:05:46,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:46,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103595335] [2023-11-06 23:05:46,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:46,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:46,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:05:46,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:46,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103595335] [2023-11-06 23:05:46,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103595335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:46,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:46,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:05:46,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091202224] [2023-11-06 23:05:46,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:46,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:46,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:46,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:46,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:46,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1050 [2023-11-06 23:05:46,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 447.6666666666667) internal successors, (1343), 3 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:46,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:46,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1050 [2023-11-06 23:05:46,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:47,362 INFO L124 PetriNetUnfolderBase]: 1805/2621 cut-off events. [2023-11-06 23:05:47,362 INFO L125 PetriNetUnfolderBase]: For 424/424 co-relation queries the response was YES. [2023-11-06 23:05:47,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5797 conditions, 2621 events. 1805/2621 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 11508 event pairs, 1075 based on Foata normal form. 0/1670 useless extension candidates. Maximal degree in co-relation 5785. Up to 1950 conditions per place. [2023-11-06 23:05:47,370 INFO L140 encePairwiseOnDemand]: 1045/1050 looper letters, 51 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-06 23:05:47,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 249 flow [2023-11-06 23:05:47,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:47,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1384 transitions. [2023-11-06 23:05:47,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43936507936507935 [2023-11-06 23:05:47,375 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1384 transitions. [2023-11-06 23:05:47,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1384 transitions. [2023-11-06 23:05:47,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:47,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1384 transitions. [2023-11-06 23:05:47,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 461.3333333333333) internal successors, (1384), 3 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:47,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:47,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:47,387 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 94 flow. Second operand 3 states and 1384 transitions. [2023-11-06 23:05:47,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 249 flow [2023-11-06 23:05:47,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:05:47,389 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 109 flow [2023-11-06 23:05:47,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2023-11-06 23:05:47,390 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2023-11-06 23:05:47,390 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 109 flow [2023-11-06 23:05:47,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 447.6666666666667) internal successors, (1343), 3 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:47,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:47,391 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:47,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 23:05:47,391 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:47,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:47,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2094022393, now seen corresponding path program 1 times [2023-11-06 23:05:47,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:47,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102339280] [2023-11-06 23:05:47,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:47,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:47,466 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:05:47,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:47,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102339280] [2023-11-06 23:05:47,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102339280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:47,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:47,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:05:47,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068161622] [2023-11-06 23:05:47,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:47,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:47,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:47,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:47,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:47,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1050 [2023-11-06 23:05:47,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 448.0) internal successors, (1344), 3 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:47,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:47,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1050 [2023-11-06 23:05:47,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:47,874 INFO L124 PetriNetUnfolderBase]: 1587/2309 cut-off events. [2023-11-06 23:05:47,875 INFO L125 PetriNetUnfolderBase]: For 801/801 co-relation queries the response was YES. [2023-11-06 23:05:47,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5672 conditions, 2309 events. 1587/2309 cut-off events. For 801/801 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 9557 event pairs, 1285 based on Foata normal form. 0/1696 useless extension candidates. Maximal degree in co-relation 5659. Up to 2309 conditions per place. [2023-11-06 23:05:47,886 INFO L140 encePairwiseOnDemand]: 1048/1050 looper letters, 33 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-11-06 23:05:47,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 173 flow [2023-11-06 23:05:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:47,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1363 transitions. [2023-11-06 23:05:47,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326984126984127 [2023-11-06 23:05:47,892 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1363 transitions. [2023-11-06 23:05:47,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1363 transitions. [2023-11-06 23:05:47,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:47,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1363 transitions. [2023-11-06 23:05:47,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 454.3333333333333) internal successors, (1363), 3 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:47,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:47,905 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:47,905 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 109 flow. Second operand 3 states and 1363 transitions. [2023-11-06 23:05:47,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 173 flow [2023-11-06 23:05:47,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:05:47,907 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 105 flow [2023-11-06 23:05:47,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-11-06 23:05:47,908 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2023-11-06 23:05:47,908 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 105 flow [2023-11-06 23:05:47,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 448.0) internal successors, (1344), 3 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:47,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:47,909 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:47,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 23:05:47,909 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:47,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:47,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2094022417, now seen corresponding path program 1 times [2023-11-06 23:05:47,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:47,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284382992] [2023-11-06 23:05:47,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:47,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:47,985 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 23:05:47,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:47,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284382992] [2023-11-06 23:05:47,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284382992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:47,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:47,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:05:47,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591726710] [2023-11-06 23:05:47,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:47,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:47,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:47,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:47,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:48,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 447 out of 1050 [2023-11-06 23:05:48,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:48,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:48,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 447 of 1050 [2023-11-06 23:05:48,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:48,338 INFO L124 PetriNetUnfolderBase]: 1163/1699 cut-off events. [2023-11-06 23:05:48,339 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-11-06 23:05:48,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4095 conditions, 1699 events. 1163/1699 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6545 event pairs, 915 based on Foata normal form. 0/1342 useless extension candidates. Maximal degree in co-relation 4081. Up to 1699 conditions per place. [2023-11-06 23:05:48,347 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-11-06 23:05:48,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 32 transitions, 163 flow [2023-11-06 23:05:48,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:48,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:48,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1368 transitions. [2023-11-06 23:05:48,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342857142857143 [2023-11-06 23:05:48,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1368 transitions. [2023-11-06 23:05:48,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1368 transitions. [2023-11-06 23:05:48,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:48,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1368 transitions. [2023-11-06 23:05:48,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 456.0) internal successors, (1368), 3 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:48,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:48,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:48,365 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 105 flow. Second operand 3 states and 1368 transitions. [2023-11-06 23:05:48,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 32 transitions, 163 flow [2023-11-06 23:05:48,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 32 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:05:48,366 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 100 flow [2023-11-06 23:05:48,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-11-06 23:05:48,367 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-11-06 23:05:48,367 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 100 flow [2023-11-06 23:05:48,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:48,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:48,368 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:48,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 23:05:48,368 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:48,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:48,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2094022368, now seen corresponding path program 1 times [2023-11-06 23:05:48,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:48,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571238766] [2023-11-06 23:05:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:48,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 23:05:48,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:48,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571238766] [2023-11-06 23:05:48,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571238766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:48,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:48,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:05:48,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319280899] [2023-11-06 23:05:48,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:48,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:48,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:48,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:48,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:48,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 447 out of 1050 [2023-11-06 23:05:48,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:48,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:48,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 447 of 1050 [2023-11-06 23:05:48,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:48,668 INFO L124 PetriNetUnfolderBase]: 805/1183 cut-off events. [2023-11-06 23:05:48,668 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2023-11-06 23:05:48,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2844 conditions, 1183 events. 805/1183 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4171 event pairs, 607 based on Foata normal form. 0/1026 useless extension candidates. Maximal degree in co-relation 2829. Up to 1183 conditions per place. [2023-11-06 23:05:48,671 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 28 selfloop transitions, 1 changer transitions 1/30 dead transitions. [2023-11-06 23:05:48,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 30 transitions, 154 flow [2023-11-06 23:05:48,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:48,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1366 transitions. [2023-11-06 23:05:48,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336507936507937 [2023-11-06 23:05:48,677 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1366 transitions. [2023-11-06 23:05:48,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1366 transitions. [2023-11-06 23:05:48,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:48,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1366 transitions. [2023-11-06 23:05:48,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 455.3333333333333) internal successors, (1366), 3 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:48,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:48,686 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:48,687 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 100 flow. Second operand 3 states and 1366 transitions. [2023-11-06 23:05:48,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 30 transitions, 154 flow [2023-11-06 23:05:48,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 30 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:05:48,688 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 93 flow [2023-11-06 23:05:48,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2023-11-06 23:05:48,689 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -12 predicate places. [2023-11-06 23:05:48,689 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 93 flow [2023-11-06 23:05:48,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:48,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:48,690 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:48,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 23:05:48,690 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:48,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:48,691 INFO L85 PathProgramCache]: Analyzing trace with hash -488986087, now seen corresponding path program 1 times [2023-11-06 23:05:48,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:48,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206163544] [2023-11-06 23:05:48,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:48,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:05:48,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:48,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206163544] [2023-11-06 23:05:48,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206163544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:48,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:48,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:05:48,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327637694] [2023-11-06 23:05:48,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:48,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:48,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:48,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:48,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:48,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1050 [2023-11-06 23:05:48,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 448.3333333333333) internal successors, (1345), 3 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:48,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:48,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1050 [2023-11-06 23:05:48,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:49,028 INFO L124 PetriNetUnfolderBase]: 805/1183 cut-off events. [2023-11-06 23:05:49,028 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2023-11-06 23:05:49,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2845 conditions, 1183 events. 805/1183 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4279 event pairs, 458 based on Foata normal form. 0/1104 useless extension candidates. Maximal degree in co-relation 2829. Up to 933 conditions per place. [2023-11-06 23:05:49,034 INFO L140 encePairwiseOnDemand]: 1047/1050 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-06 23:05:49,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 222 flow [2023-11-06 23:05:49,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1370 transitions. [2023-11-06 23:05:49,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43492063492063493 [2023-11-06 23:05:49,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1370 transitions. [2023-11-06 23:05:49,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1370 transitions. [2023-11-06 23:05:49,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:49,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1370 transitions. [2023-11-06 23:05:49,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 456.6666666666667) internal successors, (1370), 3 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:49,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:49,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:49,049 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 93 flow. Second operand 3 states and 1370 transitions. [2023-11-06 23:05:49,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 222 flow [2023-11-06 23:05:49,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:05:49,051 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 104 flow [2023-11-06 23:05:49,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-11-06 23:05:49,051 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-11-06 23:05:49,051 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 104 flow [2023-11-06 23:05:49,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 448.3333333333333) internal successors, (1345), 3 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:49,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:49,052 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:49,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 23:05:49,052 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 23:05:49,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:49,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2021302450, now seen corresponding path program 1 times [2023-11-06 23:05:49,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:49,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694443521] [2023-11-06 23:05:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:49,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:05:49,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:49,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694443521] [2023-11-06 23:05:49,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694443521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:49,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:49,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:05:49,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119292670] [2023-11-06 23:05:49,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:49,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:49,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:49,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:49,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:49,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 1050 [2023-11-06 23:05:49,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 448.6666666666667) internal successors, (1346), 3 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:49,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:49,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 1050 [2023-11-06 23:05:49,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:49,321 INFO L124 PetriNetUnfolderBase]: 632/932 cut-off events. [2023-11-06 23:05:49,321 INFO L125 PetriNetUnfolderBase]: For 554/554 co-relation queries the response was YES. [2023-11-06 23:05:49,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2574 conditions, 932 events. 632/932 cut-off events. For 554/554 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3084 event pairs, 458 based on Foata normal form. 0/931 useless extension candidates. Maximal degree in co-relation 2557. Up to 932 conditions per place. [2023-11-06 23:05:49,324 INFO L140 encePairwiseOnDemand]: 1048/1050 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-11-06 23:05:49,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 29 transitions, 158 flow [2023-11-06 23:05:49,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:49,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:49,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1357 transitions. [2023-11-06 23:05:49,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307936507936508 [2023-11-06 23:05:49,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1357 transitions. [2023-11-06 23:05:49,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1357 transitions. [2023-11-06 23:05:49,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:49,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1357 transitions. [2023-11-06 23:05:49,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 452.3333333333333) internal successors, (1357), 3 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:49,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:49,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1050.0) internal successors, (4200), 4 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:49,343 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 104 flow. Second operand 3 states and 1357 transitions. [2023-11-06 23:05:49,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 29 transitions, 158 flow [2023-11-06 23:05:49,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 29 transitions, 154 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 23:05:49,345 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-11-06 23:05:49,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1050, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-11-06 23:05:49,346 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-11-06 23:05:49,346 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-11-06 23:05:49,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 448.6666666666667) internal successors, (1346), 3 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:49,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 53 remaining) [2023-11-06 23:05:49,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 53 remaining) [2023-11-06 23:05:49,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 53 remaining) [2023-11-06 23:05:49,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 53 remaining) [2023-11-06 23:05:49,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 53 remaining) [2023-11-06 23:05:49,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 53 remaining) [2023-11-06 23:05:49,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 53 remaining) [2023-11-06 23:05:49,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 53 remaining) [2023-11-06 23:05:49,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 53 remaining) [2023-11-06 23:05:49,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 53 remaining) [2023-11-06 23:05:49,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 53 remaining) [2023-11-06 23:05:49,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 53 remaining) [2023-11-06 23:05:49,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 53 remaining) [2023-11-06 23:05:49,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 53 remaining) [2023-11-06 23:05:49,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 53 remaining) [2023-11-06 23:05:49,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 53 remaining) [2023-11-06 23:05:49,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 53 remaining) [2023-11-06 23:05:49,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 53 remaining) [2023-11-06 23:05:49,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 53 remaining) [2023-11-06 23:05:49,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 53 remaining) [2023-11-06 23:05:49,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 53 remaining) [2023-11-06 23:05:49,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 53 remaining) [2023-11-06 23:05:49,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 53 remaining) [2023-11-06 23:05:49,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 53 remaining) [2023-11-06 23:05:49,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 53 remaining) [2023-11-06 23:05:49,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 53 remaining) [2023-11-06 23:05:49,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 53 remaining) [2023-11-06 23:05:49,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 53 remaining) [2023-11-06 23:05:49,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 53 remaining) [2023-11-06 23:05:49,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 53 remaining) [2023-11-06 23:05:49,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 53 remaining) [2023-11-06 23:05:49,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 53 remaining) [2023-11-06 23:05:49,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 53 remaining) [2023-11-06 23:05:49,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 53 remaining) [2023-11-06 23:05:49,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 53 remaining) [2023-11-06 23:05:49,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 53 remaining) [2023-11-06 23:05:49,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 53 remaining) [2023-11-06 23:05:49,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 53 remaining) [2023-11-06 23:05:49,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 53 remaining) [2023-11-06 23:05:49,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 53 remaining) [2023-11-06 23:05:49,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 53 remaining) [2023-11-06 23:05:49,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 53 remaining) [2023-11-06 23:05:49,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 53 remaining) [2023-11-06 23:05:49,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 53 remaining) [2023-11-06 23:05:49,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 53 remaining) [2023-11-06 23:05:49,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 53 remaining) [2023-11-06 23:05:49,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 53 remaining) [2023-11-06 23:05:49,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 53 remaining) [2023-11-06 23:05:49,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 53 remaining) [2023-11-06 23:05:49,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 53 remaining) [2023-11-06 23:05:49,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 53 remaining) [2023-11-06 23:05:49,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 53 remaining) [2023-11-06 23:05:49,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 53 remaining) [2023-11-06 23:05:49,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 23:05:49,359 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:49,364 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 23:05:49,364 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:05:49,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:05:49 BasicIcfg [2023-11-06 23:05:49,368 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:05:49,368 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:05:49,368 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:05:49,369 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:05:49,369 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:05:03" (3/4) ... [2023-11-06 23:05:49,371 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 23:05:49,374 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 23:05:49,374 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 23:05:49,374 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 23:05:49,380 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-06 23:05:49,381 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 23:05:49,381 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 23:05:49,382 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 23:05:49,457 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:05:49,458 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 23:05:49,458 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:05:49,459 INFO L158 Benchmark]: Toolchain (without parser) took 47763.69ms. Allocated memory was 163.6MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 124.4MB in the beginning and 644.5MB in the end (delta: -520.1MB). Peak memory consumption was 555.2MB. Max. memory is 16.1GB. [2023-11-06 23:05:49,459 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory was 77.6MB in the beginning and 77.5MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:05:49,459 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.12ms. Allocated memory is still 163.6MB. Free memory was 124.1MB in the beginning and 110.9MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 23:05:49,460 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.30ms. Allocated memory is still 163.6MB. Free memory was 110.9MB in the beginning and 108.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:05:49,460 INFO L158 Benchmark]: Boogie Preprocessor took 100.90ms. Allocated memory is still 163.6MB. Free memory was 108.0MB in the beginning and 105.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:05:49,460 INFO L158 Benchmark]: RCFGBuilder took 949.37ms. Allocated memory is still 163.6MB. Free memory was 105.9MB in the beginning and 124.5MB in the end (delta: -18.5MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2023-11-06 23:05:49,461 INFO L158 Benchmark]: TraceAbstraction took 46144.69ms. Allocated memory was 163.6MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 123.6MB in the beginning and 649.7MB in the end (delta: -526.1MB). Peak memory consumption was 548.2MB. Max. memory is 16.1GB. [2023-11-06 23:05:49,461 INFO L158 Benchmark]: Witness Printer took 89.56ms. Allocated memory is still 1.2GB. Free memory was 649.7MB in the beginning and 644.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 23:05:49,464 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory was 77.6MB in the beginning and 77.5MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.12ms. Allocated memory is still 163.6MB. Free memory was 124.1MB in the beginning and 110.9MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.30ms. Allocated memory is still 163.6MB. Free memory was 110.9MB in the beginning and 108.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.90ms. Allocated memory is still 163.6MB. Free memory was 108.0MB in the beginning and 105.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 949.37ms. Allocated memory is still 163.6MB. Free memory was 105.9MB in the beginning and 124.5MB in the end (delta: -18.5MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. * TraceAbstraction took 46144.69ms. Allocated memory was 163.6MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 123.6MB in the beginning and 649.7MB in the end (delta: -526.1MB). Peak memory consumption was 548.2MB. Max. memory is 16.1GB. * Witness Printer took 89.56ms. Allocated memory is still 1.2GB. Free memory was 649.7MB in the beginning and 644.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26.4s, 427 PlacesBefore, 54 PlacesAfterwards, 448 TransitionsBefore, 48 TransitionsAfterwards, 63438 CoEnabledTransitionPairs, 8 FixpointIterations, 129 TrivialSequentialCompositions, 325 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 86 ConcurrentYvCompositions, 27 ChoiceCompositions, 575 TotalNumberOfCompositions, 59389 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 58860, independent: 58836, independent conditional: 0, independent unconditional: 58836, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 37319, independent: 37306, independent conditional: 0, independent unconditional: 37306, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 58860, independent: 21530, independent conditional: 0, independent unconditional: 21530, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 37319, unknown conditional: 0, unknown unconditional: 37319] , Statistics on independence cache: Total cache size (in pairs): 159, Positive cache size: 157, Positive conditional cache size: 0, Positive unconditional cache size: 157, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 714 locations, 53 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 45.9s, OverallIterations: 18, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 26.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 733 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 448 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1463 IncrementalHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 37 mSDtfsCounter, 1463 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=2, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 207 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 189 ConstructedInterpolants, 0 QuantifiedInterpolants, 469 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1226 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 28 InterpolantComputations, 16 PerfectInterpolantSequences, 129/143 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 23:05:49,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61749fd-acf2-4784-a602-8e047765d328/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE