./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:06:05,418 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:06:05,537 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:06:05,548 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:06:05,549 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:06:05,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:06:05,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:06:05,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:06:05,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:06:05,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:06:05,606 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:06:05,607 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:06:05,608 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:06:05,610 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:06:05,610 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:06:05,611 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:06:05,611 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:06:05,612 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:06:05,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:06:05,613 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:06:05,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:06:05,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:06:05,615 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:06:05,616 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:06:05,616 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:06:05,617 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:06:05,617 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:06:05,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:06:05,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:06:05,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:06:05,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:05,623 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:06:05,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:06:05,624 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:06:05,624 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:06:05,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:06:05,625 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:06:05,625 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:06:05,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:06:05,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:06:05,626 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:06:05,627 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_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2023-11-19 08:06:05,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:06:06,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:06:06,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:06:06,021 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:06:06,022 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:06:06,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-19 08:06:09,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:06:09,507 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:06:09,508 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-19 08:06:09,517 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/data/e9f3483af/42b14d634f8e49cda6a3de4085ef9f22/FLAG19f5238d0 [2023-11-19 08:06:09,534 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/data/e9f3483af/42b14d634f8e49cda6a3de4085ef9f22 [2023-11-19 08:06:09,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:06:09,539 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:06:09,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:09,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:06:09,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:06:09,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:09" (1/1) ... [2023-11-19 08:06:09,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634652ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:09, skipping insertion in model container [2023-11-19 08:06:09,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:09" (1/1) ... [2023-11-19 08:06:09,581 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:09,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:09,819 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:06:09,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:09,879 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:06:09,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:09 WrapperNode [2023-11-19 08:06:09,880 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:09,882 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:09,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:06:09,883 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:06:09,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:09" (1/1) ... [2023-11-19 08:06:09,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:09" (1/1) ... [2023-11-19 08:06:09,955 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 195 [2023-11-19 08:06:09,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:09,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:06:09,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:06:09,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:06:09,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:09" (1/1) ... [2023-11-19 08:06:09,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:09" (1/1) ... [2023-11-19 08:06:09,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:09" (1/1) ... [2023-11-19 08:06:09,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:09" (1/1) ... [2023-11-19 08:06:09,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:09" (1/1) ... [2023-11-19 08:06:09,992 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:09" (1/1) ... [2023-11-19 08:06:09,995 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:09" (1/1) ... [2023-11-19 08:06:09,997 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:09" (1/1) ... [2023-11-19 08:06:10,002 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:06:10,003 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:06:10,003 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:06:10,004 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:06:10,005 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:09" (1/1) ... [2023-11-19 08:06:10,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:10,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:10,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:10,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:06:10,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:06:10,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:06:10,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:06:10,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:06:10,139 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 08:06:10,139 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 08:06:10,139 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 08:06:10,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 08:06:10,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 08:06:10,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 08:06:10,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:06:10,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:06:10,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:06:10,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:06:10,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:06:10,146 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:06:10,314 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:06:10,316 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:06:10,887 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:06:10,911 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:06:10,911 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 08:06:10,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:10 BoogieIcfgContainer [2023-11-19 08:06:10,919 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:06:10,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:06:10,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:06:10,929 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:06:10,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:06:09" (1/3) ... [2023-11-19 08:06:10,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fade54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:10, skipping insertion in model container [2023-11-19 08:06:10,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:09" (2/3) ... [2023-11-19 08:06:10,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fade54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:10, skipping insertion in model container [2023-11-19 08:06:10,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:10" (3/3) ... [2023-11-19 08:06:10,937 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2023-11-19 08:06:10,948 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:06:10,960 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:06:10,961 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-19 08:06:10,962 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:06:11,137 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 08:06:11,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 362 transitions, 745 flow [2023-11-19 08:06:11,398 INFO L124 PetriNetUnfolderBase]: 29/359 cut-off events. [2023-11-19 08:06:11,398 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 08:06:11,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 359 events. 29/359 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 575 event pairs, 0 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 281. Up to 3 conditions per place. [2023-11-19 08:06:11,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 343 places, 362 transitions, 745 flow [2023-11-19 08:06:11,418 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 327 transitions, 669 flow [2023-11-19 08:06:11,423 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:11,435 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 327 transitions, 669 flow [2023-11-19 08:06:11,438 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 327 transitions, 669 flow [2023-11-19 08:06:11,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 327 transitions, 669 flow [2023-11-19 08:06:11,525 INFO L124 PetriNetUnfolderBase]: 27/327 cut-off events. [2023-11-19 08:06:11,526 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:06:11,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 327 events. 27/327 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 570 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 281. Up to 3 conditions per place. [2023-11-19 08:06:11,539 INFO L119 LiptonReduction]: Number of co-enabled transitions 12480 [2023-11-19 08:06:26,499 INFO L134 LiptonReduction]: Checked pairs total: 18124 [2023-11-19 08:06:26,500 INFO L136 LiptonReduction]: Total number of compositions: 363 [2023-11-19 08:06:26,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:26,532 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@353ad8d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:26,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-19 08:06:26,535 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:26,535 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 08:06:26,535 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:26,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:26,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 08:06:26,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 08:06:26,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:26,542 INFO L85 PathProgramCache]: Analyzing trace with hash 43576, now seen corresponding path program 1 times [2023-11-19 08:06:26,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:26,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665653214] [2023-11-19 08:06:26,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:26,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:27,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:27,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665653214] [2023-11-19 08:06:27,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665653214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:27,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:27,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:27,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142101551] [2023-11-19 08:06:27,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:27,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:27,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:27,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:27,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:27,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 725 [2023-11-19 08:06:27,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:27,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:27,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 725 [2023-11-19 08:06:27,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:28,460 INFO L124 PetriNetUnfolderBase]: 5587/7556 cut-off events. [2023-11-19 08:06:28,460 INFO L125 PetriNetUnfolderBase]: For 342/342 co-relation queries the response was YES. [2023-11-19 08:06:28,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15435 conditions, 7556 events. 5587/7556 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 34375 event pairs, 4037 based on Foata normal form. 0/3609 useless extension candidates. Maximal degree in co-relation 14220. Up to 7544 conditions per place. [2023-11-19 08:06:28,530 INFO L140 encePairwiseOnDemand]: 712/725 looper letters, 55 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2023-11-19 08:06:28,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 265 flow [2023-11-19 08:06:28,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:28,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1046 transitions. [2023-11-19 08:06:28,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48091954022988503 [2023-11-19 08:06:28,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1046 transitions. [2023-11-19 08:06:28,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1046 transitions. [2023-11-19 08:06:28,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:28,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1046 transitions. [2023-11-19 08:06:28,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 348.6666666666667) internal successors, (1046), 3 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:28,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:28,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:28,589 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 129 flow. Second operand 3 states and 1046 transitions. [2023-11-19 08:06:28,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 265 flow [2023-11-19 08:06:28,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 256 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 08:06:28,602 INFO L231 Difference]: Finished difference. Result has 55 places, 63 transitions, 184 flow [2023-11-19 08:06:28,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=55, PETRI_TRANSITIONS=63} [2023-11-19 08:06:28,611 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-11-19 08:06:28,611 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 63 transitions, 184 flow [2023-11-19 08:06:28,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:28,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:28,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:06:28,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:06:28,614 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 08:06:28,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:28,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1353364, now seen corresponding path program 1 times [2023-11-19 08:06:28,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:28,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112643899] [2023-11-19 08:06:28,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:28,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:28,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:28,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112643899] [2023-11-19 08:06:28,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112643899] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:28,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406946422] [2023-11-19 08:06:28,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:28,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:28,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:28,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:28,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:06:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:28,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:06:28,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:28,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:29,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:29,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406946422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:06:29,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:06:29,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 08:06:29,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281192424] [2023-11-19 08:06:29,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:29,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:06:29,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:29,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:06:29,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:06:29,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 725 [2023-11-19 08:06:29,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 63 transitions, 184 flow. Second operand has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:29,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:29,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 725 [2023-11-19 08:06:29,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:30,313 INFO L124 PetriNetUnfolderBase]: 5605/7583 cut-off events. [2023-11-19 08:06:30,314 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-19 08:06:30,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15452 conditions, 7583 events. 5605/7583 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 34465 event pairs, 4037 based on Foata normal form. 0/3628 useless extension candidates. Maximal degree in co-relation 15297. Up to 7544 conditions per place. [2023-11-19 08:06:30,390 INFO L140 encePairwiseOnDemand]: 712/725 looper letters, 52 selfloop transitions, 37 changer transitions 0/90 dead transitions. [2023-11-19 08:06:30,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 90 transitions, 482 flow [2023-11-19 08:06:30,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:06:30,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:06:30,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2380 transitions. [2023-11-19 08:06:30,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4689655172413793 [2023-11-19 08:06:30,404 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2380 transitions. [2023-11-19 08:06:30,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2380 transitions. [2023-11-19 08:06:30,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:30,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2380 transitions. [2023-11-19 08:06:30,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 340.0) internal successors, (2380), 7 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:30,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 725.0) internal successors, (5800), 8 states have internal predecessors, (5800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:30,440 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 725.0) internal successors, (5800), 8 states have internal predecessors, (5800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:30,440 INFO L175 Difference]: Start difference. First operand has 55 places, 63 transitions, 184 flow. Second operand 7 states and 2380 transitions. [2023-11-19 08:06:30,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 90 transitions, 482 flow [2023-11-19 08:06:30,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 456 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:30,447 INFO L231 Difference]: Finished difference. Result has 62 places, 90 transitions, 414 flow [2023-11-19 08:06:30,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=414, PETRI_PLACES=62, PETRI_TRANSITIONS=90} [2023-11-19 08:06:30,449 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-11-19 08:06:30,449 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 90 transitions, 414 flow [2023-11-19 08:06:30,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 327.14285714285717) internal successors, (2290), 7 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:30,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:30,451 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-19 08:06:30,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:30,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:30,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 08:06:30,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:30,666 INFO L85 PathProgramCache]: Analyzing trace with hash 41955576, now seen corresponding path program 1 times [2023-11-19 08:06:30,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:30,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957433579] [2023-11-19 08:06:30,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:30,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:06:30,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:30,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957433579] [2023-11-19 08:06:30,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957433579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:30,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:30,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:30,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54397464] [2023-11-19 08:06:30,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:30,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:30,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:30,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:30,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:30,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 725 [2023-11-19 08:06:30,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 90 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:30,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:30,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 725 [2023-11-19 08:06:30,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:31,975 INFO L124 PetriNetUnfolderBase]: 5596/7571 cut-off events. [2023-11-19 08:06:31,976 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-19 08:06:31,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15462 conditions, 7571 events. 5596/7571 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 34397 event pairs, 4037 based on Foata normal form. 0/3630 useless extension candidates. Maximal degree in co-relation 15368. Up to 7535 conditions per place. [2023-11-19 08:06:32,041 INFO L140 encePairwiseOnDemand]: 720/725 looper letters, 71 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2023-11-19 08:06:32,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 78 transitions, 487 flow [2023-11-19 08:06:32,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:32,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2023-11-19 08:06:32,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4754022988505747 [2023-11-19 08:06:32,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2023-11-19 08:06:32,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2023-11-19 08:06:32,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:32,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2023-11-19 08:06:32,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:32,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:32,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:32,135 INFO L175 Difference]: Start difference. First operand has 62 places, 90 transitions, 414 flow. Second operand 3 states and 1034 transitions. [2023-11-19 08:06:32,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 78 transitions, 487 flow [2023-11-19 08:06:32,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 450 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-19 08:06:32,140 INFO L231 Difference]: Finished difference. Result has 59 places, 78 transitions, 308 flow [2023-11-19 08:06:32,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=59, PETRI_TRANSITIONS=78} [2023-11-19 08:06:32,141 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-19 08:06:32,141 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 78 transitions, 308 flow [2023-11-19 08:06:32,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:32,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:32,143 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 08:06:32,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:06:32,143 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 08:06:32,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:32,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1664681950, now seen corresponding path program 2 times [2023-11-19 08:06:32,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:32,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977452978] [2023-11-19 08:06:32,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:32,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:32,376 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:32,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:32,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977452978] [2023-11-19 08:06:32,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977452978] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:32,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004759417] [2023-11-19 08:06:32,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:06:32,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:32,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:32,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:32,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:06:32,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:06:32,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:06:32,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:06:32,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:32,535 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:06:32,535 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:32,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004759417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:32,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:06:32,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 08:06:32,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109655866] [2023-11-19 08:06:32,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:32,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:32,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:32,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:32,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:06:32,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 725 [2023-11-19 08:06:32,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 78 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:32,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:32,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 725 [2023-11-19 08:06:32,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:33,458 INFO L124 PetriNetUnfolderBase]: 5596/7570 cut-off events. [2023-11-19 08:06:33,458 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-11-19 08:06:33,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15442 conditions, 7570 events. 5596/7570 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 34418 event pairs, 4037 based on Foata normal form. 1/3634 useless extension candidates. Maximal degree in co-relation 15362. Up to 7557 conditions per place. [2023-11-19 08:06:33,520 INFO L140 encePairwiseOnDemand]: 722/725 looper letters, 70 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2023-11-19 08:06:33,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 450 flow [2023-11-19 08:06:33,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:33,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:33,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1049 transitions. [2023-11-19 08:06:33,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48229885057471267 [2023-11-19 08:06:33,526 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1049 transitions. [2023-11-19 08:06:33,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1049 transitions. [2023-11-19 08:06:33,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:33,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1049 transitions. [2023-11-19 08:06:33,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 349.6666666666667) internal successors, (1049), 3 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:33,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:33,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:33,540 INFO L175 Difference]: Start difference. First operand has 59 places, 78 transitions, 308 flow. Second operand 3 states and 1049 transitions. [2023-11-19 08:06:33,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 450 flow [2023-11-19 08:06:33,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 438 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:33,544 INFO L231 Difference]: Finished difference. Result has 58 places, 77 transitions, 298 flow [2023-11-19 08:06:33,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=58, PETRI_TRANSITIONS=77} [2023-11-19 08:06:33,545 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-11-19 08:06:33,545 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 77 transitions, 298 flow [2023-11-19 08:06:33,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:33,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:33,547 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-19 08:06:33,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:33,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:33,761 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 08:06:33,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:33,761 INFO L85 PathProgramCache]: Analyzing trace with hash 763131180, now seen corresponding path program 1 times [2023-11-19 08:06:33,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:33,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120607427] [2023-11-19 08:06:33,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:33,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:33,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:33,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120607427] [2023-11-19 08:06:33,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120607427] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:33,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601412867] [2023-11-19 08:06:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:33,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:33,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:33,917 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:33,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:06:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:34,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:06:34,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:34,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:34,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601412867] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:06:34,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:06:34,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 08:06:34,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614505025] [2023-11-19 08:06:34,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:34,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:06:34,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:34,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:06:34,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:06:34,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 725 [2023-11-19 08:06:34,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 77 transitions, 298 flow. Second operand has 13 states, 13 states have (on average 327.15384615384613) internal successors, (4253), 13 states have internal predecessors, (4253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:34,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:34,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 725 [2023-11-19 08:06:34,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:35,541 INFO L124 PetriNetUnfolderBase]: 5614/7606 cut-off events. [2023-11-19 08:06:35,541 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-11-19 08:06:35,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15580 conditions, 7606 events. 5614/7606 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 34643 event pairs, 4037 based on Foata normal form. 12/3668 useless extension candidates. Maximal degree in co-relation 15477. Up to 7549 conditions per place. [2023-11-19 08:06:35,614 INFO L140 encePairwiseOnDemand]: 716/725 looper letters, 51 selfloop transitions, 61 changer transitions 0/113 dead transitions. [2023-11-19 08:06:35,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 113 transitions, 738 flow [2023-11-19 08:06:35,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:06:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 08:06:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4036 transitions. [2023-11-19 08:06:35,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4639080459770115 [2023-11-19 08:06:35,635 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4036 transitions. [2023-11-19 08:06:35,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4036 transitions. [2023-11-19 08:06:35,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:35,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4036 transitions. [2023-11-19 08:06:35,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 336.3333333333333) internal successors, (4036), 12 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:35,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 725.0) internal successors, (9425), 13 states have internal predecessors, (9425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:35,695 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 725.0) internal successors, (9425), 13 states have internal predecessors, (9425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:35,695 INFO L175 Difference]: Start difference. First operand has 58 places, 77 transitions, 298 flow. Second operand 12 states and 4036 transitions. [2023-11-19 08:06:35,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 113 transitions, 738 flow [2023-11-19 08:06:35,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 113 transitions, 714 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:35,704 INFO L231 Difference]: Finished difference. Result has 73 places, 113 transitions, 698 flow [2023-11-19 08:06:35,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=698, PETRI_PLACES=73, PETRI_TRANSITIONS=113} [2023-11-19 08:06:35,708 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2023-11-19 08:06:35,709 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 113 transitions, 698 flow [2023-11-19 08:06:35,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 327.15384615384613) internal successors, (4253), 13 states have internal predecessors, (4253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:35,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:35,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:35,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:35,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:35,933 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 08:06:35,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:35,934 INFO L85 PathProgramCache]: Analyzing trace with hash -820915793, now seen corresponding path program 1 times [2023-11-19 08:06:35,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:35,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748302327] [2023-11-19 08:06:35,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:35,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:36,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:36,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748302327] [2023-11-19 08:06:36,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748302327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:36,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:36,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:36,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789800985] [2023-11-19 08:06:36,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:36,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:36,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:36,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:36,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:36,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 725 [2023-11-19 08:06:36,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 113 transitions, 698 flow. Second operand has 3 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:36,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:36,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 725 [2023-11-19 08:06:36,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:37,562 INFO L124 PetriNetUnfolderBase]: 7425/10203 cut-off events. [2023-11-19 08:06:37,562 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-11-19 08:06:37,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20698 conditions, 10203 events. 7425/10203 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 51313 event pairs, 4037 based on Foata normal form. 0/5181 useless extension candidates. Maximal degree in co-relation 20580. Up to 7955 conditions per place. [2023-11-19 08:06:37,662 INFO L140 encePairwiseOnDemand]: 719/725 looper letters, 139 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2023-11-19 08:06:37,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 144 transitions, 1049 flow [2023-11-19 08:06:37,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:37,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:37,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1099 transitions. [2023-11-19 08:06:37,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052873563218391 [2023-11-19 08:06:37,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1099 transitions. [2023-11-19 08:06:37,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1099 transitions. [2023-11-19 08:06:37,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:37,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1099 transitions. [2023-11-19 08:06:37,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 366.3333333333333) internal successors, (1099), 3 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:37,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:37,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:37,687 INFO L175 Difference]: Start difference. First operand has 73 places, 113 transitions, 698 flow. Second operand 3 states and 1099 transitions. [2023-11-19 08:06:37,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 144 transitions, 1049 flow [2023-11-19 08:06:37,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 144 transitions, 871 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-11-19 08:06:37,694 INFO L231 Difference]: Finished difference. Result has 71 places, 116 transitions, 548 flow [2023-11-19 08:06:37,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=548, PETRI_PLACES=71, PETRI_TRANSITIONS=116} [2023-11-19 08:06:37,696 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2023-11-19 08:06:37,696 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 116 transitions, 548 flow [2023-11-19 08:06:37,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:37,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:37,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:37,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:06:37,698 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 08:06:37,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:37,699 INFO L85 PathProgramCache]: Analyzing trace with hash -820915738, now seen corresponding path program 1 times [2023-11-19 08:06:37,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:37,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649770218] [2023-11-19 08:06:37,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:37,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:37,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:37,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649770218] [2023-11-19 08:06:37,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649770218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:37,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:37,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:37,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599363341] [2023-11-19 08:06:37,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:37,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:06:37,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:37,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:06:37,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:06:38,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 725 [2023-11-19 08:06:38,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 116 transitions, 548 flow. Second operand has 5 states, 5 states have (on average 318.6) internal successors, (1593), 5 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:38,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:38,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 725 [2023-11-19 08:06:38,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:40,419 INFO L124 PetriNetUnfolderBase]: 14035/18724 cut-off events. [2023-11-19 08:06:40,419 INFO L125 PetriNetUnfolderBase]: For 3410/3410 co-relation queries the response was YES. [2023-11-19 08:06:40,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42460 conditions, 18724 events. 14035/18724 cut-off events. For 3410/3410 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 92267 event pairs, 9646 based on Foata normal form. 0/11118 useless extension candidates. Maximal degree in co-relation 42331. Up to 9412 conditions per place. [2023-11-19 08:06:40,780 INFO L140 encePairwiseOnDemand]: 717/725 looper letters, 166 selfloop transitions, 17 changer transitions 0/184 dead transitions. [2023-11-19 08:06:40,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 184 transitions, 1175 flow [2023-11-19 08:06:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:06:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2004 transitions. [2023-11-19 08:06:40,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4606896551724138 [2023-11-19 08:06:40,790 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2004 transitions. [2023-11-19 08:06:40,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2004 transitions. [2023-11-19 08:06:40,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:40,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2004 transitions. [2023-11-19 08:06:40,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:40,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 725.0) internal successors, (5075), 7 states have internal predecessors, (5075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:40,812 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 725.0) internal successors, (5075), 7 states have internal predecessors, (5075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:40,812 INFO L175 Difference]: Start difference. First operand has 71 places, 116 transitions, 548 flow. Second operand 6 states and 2004 transitions. [2023-11-19 08:06:40,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 184 transitions, 1175 flow [2023-11-19 08:06:40,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 184 transitions, 1167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:06:40,824 INFO L231 Difference]: Finished difference. Result has 78 places, 119 transitions, 619 flow [2023-11-19 08:06:40,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=619, PETRI_PLACES=78, PETRI_TRANSITIONS=119} [2023-11-19 08:06:40,826 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2023-11-19 08:06:40,826 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 119 transitions, 619 flow [2023-11-19 08:06:40,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 318.6) internal successors, (1593), 5 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:40,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:40,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:40,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:06:40,828 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 08:06:40,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:40,829 INFO L85 PathProgramCache]: Analyzing trace with hash 221544567, now seen corresponding path program 1 times [2023-11-19 08:06:40,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:40,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180728202] [2023-11-19 08:06:40,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:40,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:41,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:41,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180728202] [2023-11-19 08:06:41,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180728202] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:41,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611638310] [2023-11-19 08:06:41,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:41,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:41,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:41,033 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:41,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:06:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:41,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:06:41,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:41,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:41,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:41,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611638310] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:41,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:06:41,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 9 [2023-11-19 08:06:41,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905889558] [2023-11-19 08:06:41,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:41,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:06:41,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:41,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:06:41,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:06:41,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 725 [2023-11-19 08:06:41,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 119 transitions, 619 flow. Second operand has 5 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:41,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:41,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 725 [2023-11-19 08:06:41,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:43,753 INFO L124 PetriNetUnfolderBase]: 13835/18524 cut-off events. [2023-11-19 08:06:43,753 INFO L125 PetriNetUnfolderBase]: For 3589/3589 co-relation queries the response was YES. [2023-11-19 08:06:43,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41360 conditions, 18524 events. 13835/18524 cut-off events. For 3589/3589 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 92249 event pairs, 8988 based on Foata normal form. 200/11653 useless extension candidates. Maximal degree in co-relation 41224. Up to 10368 conditions per place. [2023-11-19 08:06:43,916 INFO L140 encePairwiseOnDemand]: 719/725 looper letters, 167 selfloop transitions, 15 changer transitions 0/183 dead transitions. [2023-11-19 08:06:43,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 183 transitions, 1221 flow [2023-11-19 08:06:43,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:06:43,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:06:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1649 transitions. [2023-11-19 08:06:43,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45489655172413795 [2023-11-19 08:06:43,924 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1649 transitions. [2023-11-19 08:06:43,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1649 transitions. [2023-11-19 08:06:43,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:43,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1649 transitions. [2023-11-19 08:06:43,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 329.8) internal successors, (1649), 5 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:43,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 725.0) internal successors, (4350), 6 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:43,941 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 725.0) internal successors, (4350), 6 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:43,942 INFO L175 Difference]: Start difference. First operand has 78 places, 119 transitions, 619 flow. Second operand 5 states and 1649 transitions. [2023-11-19 08:06:43,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 183 transitions, 1221 flow [2023-11-19 08:06:43,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 183 transitions, 1201 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:43,954 INFO L231 Difference]: Finished difference. Result has 82 places, 119 transitions, 645 flow [2023-11-19 08:06:43,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=645, PETRI_PLACES=82, PETRI_TRANSITIONS=119} [2023-11-19 08:06:43,956 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2023-11-19 08:06:43,956 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 119 transitions, 645 flow [2023-11-19 08:06:43,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:43,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:43,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:43,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:44,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 08:06:44,173 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 08:06:44,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:44,173 INFO L85 PathProgramCache]: Analyzing trace with hash -820915674, now seen corresponding path program 1 times [2023-11-19 08:06:44,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:44,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749374425] [2023-11-19 08:06:44,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:44,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:44,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:44,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749374425] [2023-11-19 08:06:44,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749374425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:44,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:44,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:44,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475366491] [2023-11-19 08:06:44,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:44,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:44,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:44,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:44,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:44,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 725 [2023-11-19 08:06:44,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 119 transitions, 645 flow. Second operand has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:44,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:44,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 725 [2023-11-19 08:06:44,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:49,048 INFO L124 PetriNetUnfolderBase]: 26888/35899 cut-off events. [2023-11-19 08:06:49,048 INFO L125 PetriNetUnfolderBase]: For 8342/8342 co-relation queries the response was YES. [2023-11-19 08:06:49,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81974 conditions, 35899 events. 26888/35899 cut-off events. For 8342/8342 co-relation queries the response was YES. Maximal size of possible extension queue 1438. Compared 192261 event pairs, 18484 based on Foata normal form. 156/23509 useless extension candidates. Maximal degree in co-relation 81737. Up to 18005 conditions per place. [2023-11-19 08:06:49,391 INFO L140 encePairwiseOnDemand]: 717/725 looper letters, 205 selfloop transitions, 7 changer transitions 0/213 dead transitions. [2023-11-19 08:06:49,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 213 transitions, 1514 flow [2023-11-19 08:06:49,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:06:49,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:06:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1707 transitions. [2023-11-19 08:06:49,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708965517241379 [2023-11-19 08:06:49,401 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1707 transitions. [2023-11-19 08:06:49,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1707 transitions. [2023-11-19 08:06:49,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:49,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1707 transitions. [2023-11-19 08:06:49,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 341.4) internal successors, (1707), 5 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:49,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 725.0) internal successors, (4350), 6 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:49,420 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 725.0) internal successors, (4350), 6 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:49,420 INFO L175 Difference]: Start difference. First operand has 82 places, 119 transitions, 645 flow. Second operand 5 states and 1707 transitions. [2023-11-19 08:06:49,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 213 transitions, 1514 flow [2023-11-19 08:06:49,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 213 transitions, 1498 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:49,443 INFO L231 Difference]: Finished difference. Result has 87 places, 123 transitions, 695 flow [2023-11-19 08:06:49,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=695, PETRI_PLACES=87, PETRI_TRANSITIONS=123} [2023-11-19 08:06:49,445 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2023-11-19 08:06:49,446 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 123 transitions, 695 flow [2023-11-19 08:06:49,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:49,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:49,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:49,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:06:49,448 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 08:06:49,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash 221544503, now seen corresponding path program 1 times [2023-11-19 08:06:49,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:49,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259831046] [2023-11-19 08:06:49,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:49,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:49,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:49,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259831046] [2023-11-19 08:06:49,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259831046] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896052790] [2023-11-19 08:06:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:49,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:49,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:49,629 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:49,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:06:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:49,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:06:49,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:06:49,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:49,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896052790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:49,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:06:49,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-19 08:06:49,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047014745] [2023-11-19 08:06:49,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:49,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:49,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:49,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:49,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:06:49,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 725 [2023-11-19 08:06:49,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 123 transitions, 695 flow. Second operand has 3 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:49,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:49,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 725 [2023-11-19 08:06:49,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:53,385 INFO L124 PetriNetUnfolderBase]: 23040/30787 cut-off events. [2023-11-19 08:06:53,385 INFO L125 PetriNetUnfolderBase]: For 8732/8732 co-relation queries the response was YES. [2023-11-19 08:06:53,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69077 conditions, 30787 events. 23040/30787 cut-off events. For 8732/8732 co-relation queries the response was YES. Maximal size of possible extension queue 1246. Compared 161889 event pairs, 15640 based on Foata normal form. 1398/20695 useless extension candidates. Maximal degree in co-relation 68840. Up to 30723 conditions per place. [2023-11-19 08:06:53,653 INFO L140 encePairwiseOnDemand]: 722/725 looper letters, 117 selfloop transitions, 1 changer transitions 0/119 dead transitions. [2023-11-19 08:06:53,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 119 transitions, 907 flow [2023-11-19 08:06:53,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:53,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1066 transitions. [2023-11-19 08:06:53,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901149425287356 [2023-11-19 08:06:53,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1066 transitions. [2023-11-19 08:06:53,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1066 transitions. [2023-11-19 08:06:53,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:53,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1066 transitions. [2023-11-19 08:06:53,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 355.3333333333333) internal successors, (1066), 3 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:53,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:53,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 725.0) internal successors, (2900), 4 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:53,677 INFO L175 Difference]: Start difference. First operand has 87 places, 123 transitions, 695 flow. Second operand 3 states and 1066 transitions. [2023-11-19 08:06:53,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 119 transitions, 907 flow [2023-11-19 08:06:53,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 865 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-19 08:06:53,689 INFO L231 Difference]: Finished difference. Result has 81 places, 119 transitions, 631 flow [2023-11-19 08:06:53,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=725, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=631, PETRI_PLACES=81, PETRI_TRANSITIONS=119} [2023-11-19 08:06:53,692 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2023-11-19 08:06:53,692 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 119 transitions, 631 flow [2023-11-19 08:06:53,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:53,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:53,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:53,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:53,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 08:06:53,917 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 08:06:53,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash -3584548, now seen corresponding path program 1 times [2023-11-19 08:06:53,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:53,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651224515] [2023-11-19 08:06:53,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:53,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:54,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:54,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:54,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651224515] [2023-11-19 08:06:54,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651224515] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:54,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277339466] [2023-11-19 08:06:54,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:54,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:54,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:54,091 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:54,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d6ecead-72dc-4b24-a97b-89c104fa49ff/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:06:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:54,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:06:54,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:54,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:06:54,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:54,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277339466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:54,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:06:54,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-19 08:06:54,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231647992] [2023-11-19 08:06:54,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:54,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:54,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:54,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:54,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:06:54,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 725 [2023-11-19 08:06:54,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 119 transitions, 631 flow. Second operand has 4 states, 4 states have (on average 338.25) internal successors, (1353), 4 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:54,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:54,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 725 [2023-11-19 08:06:54,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand