./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sorted.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_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/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_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/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_e08b706b-6233-4f8f-86b3-6dfa9b751875/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 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:01:45,842 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:01:45,907 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:01:45,913 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:01:45,914 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:01:45,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:01:45,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:01:45,939 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:01:45,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:01:45,940 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:01:45,941 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:01:45,942 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:01:45,942 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:01:45,943 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:01:45,944 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:01:45,944 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:01:45,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:01:45,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:01:45,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:01:45,947 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:01:45,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:01:45,948 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:01:45,949 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:01:45,950 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:01:45,950 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:01:45,951 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:01:45,952 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:01:45,952 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:01:45,953 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:01:45,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:01:45,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:45,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:01:45,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:01:45,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:01:45,957 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:01:45,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:01:45,958 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:01:45,958 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:01:45,959 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:01:45,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:01:45,959 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:01:45,960 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_e08b706b-6233-4f8f-86b3-6dfa9b751875/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 [2023-11-19 08:01:46,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:01:46,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:01:46,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:01:46,240 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:01:46,240 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:01:46,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2023-11-19 08:01:49,528 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:01:49,833 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:01:49,834 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2023-11-19 08:01:49,847 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/data/8ff99577a/789282ec1f80478c912a75b0aef4cfda/FLAG8e68ebf46 [2023-11-19 08:01:49,867 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/data/8ff99577a/789282ec1f80478c912a75b0aef4cfda [2023-11-19 08:01:49,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:01:49,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:01:49,879 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:49,880 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:01:49,885 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:01:49,886 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:49" (1/1) ... [2023-11-19 08:01:49,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a9b51e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:49, skipping insertion in model container [2023-11-19 08:01:49,888 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:49" (1/1) ... [2023-11-19 08:01:49,921 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:01:50,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:50,119 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:01:50,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:50,171 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:01:50,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50 WrapperNode [2023-11-19 08:01:50,172 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:50,173 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:50,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:01:50,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:01:50,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,221 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 112 [2023-11-19 08:01:50,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:50,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:01:50,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:01:50,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:01:50,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,239 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,251 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,259 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,265 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:01:50,270 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:01:50,270 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:01:50,270 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:01:50,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:50,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:50,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:50,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:01:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:01:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 08:01:50,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 08:01:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 08:01:50,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 08:01:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 08:01:50,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 08:01:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:01:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:01:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:01:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:01:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:01:50,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:01:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:01:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:01:50,365 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 08:01:50,476 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:01:50,479 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:01:50,882 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:01:50,895 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:01:50,895 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 08:01:50,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:50 BoogieIcfgContainer [2023-11-19 08:01:50,900 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:01:50,904 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:01:50,904 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:01:50,907 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:01:50,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:01:49" (1/3) ... [2023-11-19 08:01:50,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45005baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:50, skipping insertion in model container [2023-11-19 08:01:50,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (2/3) ... [2023-11-19 08:01:50,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45005baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:50, skipping insertion in model container [2023-11-19 08:01:50,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:50" (3/3) ... [2023-11-19 08:01:50,911 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2023-11-19 08:01:50,920 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:01:50,932 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:01:50,932 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-19 08:01:50,932 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:01:51,130 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 08:01:51,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 228 transitions, 477 flow [2023-11-19 08:01:51,309 INFO L124 PetriNetUnfolderBase]: 15/225 cut-off events. [2023-11-19 08:01:51,309 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 08:01:51,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 225 events. 15/225 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 391 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 162. Up to 2 conditions per place. [2023-11-19 08:01:51,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 228 transitions, 477 flow [2023-11-19 08:01:51,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 201 transitions, 417 flow [2023-11-19 08:01:51,330 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:01:51,341 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 201 transitions, 417 flow [2023-11-19 08:01:51,344 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 201 transitions, 417 flow [2023-11-19 08:01:51,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 201 transitions, 417 flow [2023-11-19 08:01:51,409 INFO L124 PetriNetUnfolderBase]: 14/201 cut-off events. [2023-11-19 08:01:51,419 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:01:51,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 201 events. 14/201 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 390 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 162. Up to 2 conditions per place. [2023-11-19 08:01:51,431 INFO L119 LiptonReduction]: Number of co-enabled transitions 8286 [2023-11-19 08:02:00,941 INFO L134 LiptonReduction]: Checked pairs total: 9075 [2023-11-19 08:02:00,942 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-11-19 08:02:00,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:00,970 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;@31040e4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:00,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-11-19 08:02:00,974 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:02:00,974 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 08:02:00,974 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:02:00,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:00,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 08:02:00,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:00,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:00,983 INFO L85 PathProgramCache]: Analyzing trace with hash 27824, now seen corresponding path program 1 times [2023-11-19 08:02:00,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:00,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566659904] [2023-11-19 08:02:00,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:00,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:01,305 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 08:02:01,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:01,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566659904] [2023-11-19 08:02:01,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566659904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:01,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:01,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:02:01,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230215855] [2023-11-19 08:02:01,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:01,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:01,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:01,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:01,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:01,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 448 [2023-11-19 08:02:01,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states 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 08:02:01,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:01,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 448 [2023-11-19 08:02:01,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:02,185 INFO L124 PetriNetUnfolderBase]: 3269/4673 cut-off events. [2023-11-19 08:02:02,185 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2023-11-19 08:02:02,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9466 conditions, 4673 events. 3269/4673 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 22416 event pairs, 2553 based on Foata normal form. 0/2345 useless extension candidates. Maximal degree in co-relation 8663. Up to 4546 conditions per place. [2023-11-19 08:02:02,230 INFO L140 encePairwiseOnDemand]: 440/448 looper letters, 40 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-11-19 08:02:02,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 191 flow [2023-11-19 08:02:02,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:02,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:02,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2023-11-19 08:02:02,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-19 08:02:02,251 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 672 transitions. [2023-11-19 08:02:02,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 672 transitions. [2023-11-19 08:02:02,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:02,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 672 transitions. [2023-11-19 08:02:02,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states 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 08:02:02,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:02,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:02,320 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 107 flow. Second operand 3 states and 672 transitions. [2023-11-19 08:02:02,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 191 flow [2023-11-19 08:02:02,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 08:02:02,334 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 113 flow [2023-11-19 08:02:02,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-11-19 08:02:02,341 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-11-19 08:02:02,342 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 113 flow [2023-11-19 08:02:02,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states 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 08:02:02,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:02,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:02:02,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:02:02,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:02,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:02,347 INFO L85 PathProgramCache]: Analyzing trace with hash 864560, now seen corresponding path program 1 times [2023-11-19 08:02:02,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:02,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300548693] [2023-11-19 08:02:02,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:02,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:02,511 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 08:02:02,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:02,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300548693] [2023-11-19 08:02:02,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300548693] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:02,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111069412] [2023-11-19 08:02:02,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:02,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:02,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:02,516 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:02,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:02:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:02,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:02:02,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:02,695 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 08:02:02,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:02,715 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 08:02:02,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111069412] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:02,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:02:02,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 08:02:02,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545218703] [2023-11-19 08:02:02,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:02,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:02:02,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:02,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:02:02,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:02:02,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 448 [2023-11-19 08:02:02,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 113 flow. Second operand has 7 states, 7 states have (on average 209.14285714285714) internal successors, (1464), 7 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 08:02:02,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:02,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 448 [2023-11-19 08:02:02,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:03,533 INFO L124 PetriNetUnfolderBase]: 3275/4682 cut-off events. [2023-11-19 08:02:03,534 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-19 08:02:03,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9431 conditions, 4682 events. 3275/4682 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 22456 event pairs, 2553 based on Foata normal form. 0/2348 useless extension candidates. Maximal degree in co-relation 9377. Up to 4548 conditions per place. [2023-11-19 08:02:03,590 INFO L140 encePairwiseOnDemand]: 443/448 looper letters, 39 selfloop transitions, 13 changer transitions 0/54 dead transitions. [2023-11-19 08:02:03,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 253 flow [2023-11-19 08:02:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:02:03,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:02:03,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1511 transitions. [2023-11-19 08:02:03,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48182397959183676 [2023-11-19 08:02:03,604 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1511 transitions. [2023-11-19 08:02:03,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1511 transitions. [2023-11-19 08:02:03,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:03,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1511 transitions. [2023-11-19 08:02:03,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 215.85714285714286) internal successors, (1511), 7 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states 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 08:02:03,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 448.0) internal successors, (3584), 8 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states 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 08:02:03,629 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 448.0) internal successors, (3584), 8 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states 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 08:02:03,629 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 113 flow. Second operand 7 states and 1511 transitions. [2023-11-19 08:02:03,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 253 flow [2023-11-19 08:02:03,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 248 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 08:02:03,632 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 192 flow [2023-11-19 08:02:03,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=192, PETRI_PLACES=53, PETRI_TRANSITIONS=54} [2023-11-19 08:02:03,634 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-11-19 08:02:03,634 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 192 flow [2023-11-19 08:02:03,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 209.14285714285714) internal successors, (1464), 7 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 08:02:03,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:03,636 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-19 08:02:03,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:03,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:03,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:03,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:03,856 INFO L85 PathProgramCache]: Analyzing trace with hash 26802896, now seen corresponding path program 1 times [2023-11-19 08:02:03,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:03,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182628314] [2023-11-19 08:02:03,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:03,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:03,962 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 08:02:03,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:03,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182628314] [2023-11-19 08:02:03,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182628314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:03,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:03,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:03,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411205751] [2023-11-19 08:02:03,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:03,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:03,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:03,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:03,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:03,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 448 [2023-11-19 08:02:03,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 54 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 08:02:03,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:03,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 448 [2023-11-19 08:02:03,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:04,641 INFO L124 PetriNetUnfolderBase]: 3272/4678 cut-off events. [2023-11-19 08:02:04,641 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-19 08:02:04,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9439 conditions, 4678 events. 3272/4678 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 22449 event pairs, 2553 based on Foata normal form. 0/2352 useless extension candidates. Maximal degree in co-relation 9403. Up to 4545 conditions per place. [2023-11-19 08:02:04,690 INFO L140 encePairwiseOnDemand]: 445/448 looper letters, 42 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-11-19 08:02:04,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 261 flow [2023-11-19 08:02:04,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:04,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:04,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 665 transitions. [2023-11-19 08:02:04,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2023-11-19 08:02:04,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 665 transitions. [2023-11-19 08:02:04,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 665 transitions. [2023-11-19 08:02:04,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:04,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 665 transitions. [2023-11-19 08:02:04,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states 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 08:02:04,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:04,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:04,704 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 192 flow. Second operand 3 states and 665 transitions. [2023-11-19 08:02:04,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 261 flow [2023-11-19 08:02:04,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 50 transitions, 240 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-19 08:02:04,710 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 156 flow [2023-11-19 08:02:04,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2023-11-19 08:02:04,712 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-11-19 08:02:04,713 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 156 flow [2023-11-19 08:02:04,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 08:02:04,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:04,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:02:04,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:02:04,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:04,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:04,715 INFO L85 PathProgramCache]: Analyzing trace with hash 830797514, now seen corresponding path program 1 times [2023-11-19 08:02:04,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:04,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568529938] [2023-11-19 08:02:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:04,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:04,794 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 08:02:04,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:04,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568529938] [2023-11-19 08:02:04,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568529938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:04,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:04,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:04,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779342796] [2023-11-19 08:02:04,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:04,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:04,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:04,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:04,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:04,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 448 [2023-11-19 08:02:04,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states 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 08:02:04,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:04,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 448 [2023-11-19 08:02:04,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:05,335 INFO L124 PetriNetUnfolderBase]: 3272/4551 cut-off events. [2023-11-19 08:02:05,335 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-19 08:02:05,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9309 conditions, 4551 events. 3272/4551 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 20412 event pairs, 2553 based on Foata normal form. 0/2227 useless extension candidates. Maximal degree in co-relation 9275. Up to 4544 conditions per place. [2023-11-19 08:02:05,375 INFO L140 encePairwiseOnDemand]: 445/448 looper letters, 43 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2023-11-19 08:02:05,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 248 flow [2023-11-19 08:02:05,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:05,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2023-11-19 08:02:05,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49330357142857145 [2023-11-19 08:02:05,379 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2023-11-19 08:02:05,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2023-11-19 08:02:05,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:05,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2023-11-19 08:02:05,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 08:02:05,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:05,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:05,387 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 156 flow. Second operand 3 states and 663 transitions. [2023-11-19 08:02:05,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 248 flow [2023-11-19 08:02:05,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:02:05,392 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 150 flow [2023-11-19 08:02:05,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-11-19 08:02:05,394 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-11-19 08:02:05,395 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 150 flow [2023-11-19 08:02:05,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states 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 08:02:05,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:05,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:02:05,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:02:05,400 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:05,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:05,401 INFO L85 PathProgramCache]: Analyzing trace with hash 830797695, now seen corresponding path program 1 times [2023-11-19 08:02:05,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:05,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972762020] [2023-11-19 08:02:05,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:05,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:05,469 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 08:02:05,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:05,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972762020] [2023-11-19 08:02:05,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972762020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:05,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:05,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:02:05,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078254393] [2023-11-19 08:02:05,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:05,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:05,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:05,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:05,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:05,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 448 [2023-11-19 08:02:05,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states 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 08:02:05,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:05,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 448 [2023-11-19 08:02:05,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:05,904 INFO L124 PetriNetUnfolderBase]: 2516/3503 cut-off events. [2023-11-19 08:02:05,905 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-19 08:02:05,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7193 conditions, 3503 events. 2516/3503 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 14812 event pairs, 1915 based on Foata normal form. 0/1825 useless extension candidates. Maximal degree in co-relation 7159. Up to 3503 conditions per place. [2023-11-19 08:02:05,928 INFO L140 encePairwiseOnDemand]: 445/448 looper letters, 45 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-11-19 08:02:05,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 238 flow [2023-11-19 08:02:05,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:05,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:05,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2023-11-19 08:02:05,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49181547619047616 [2023-11-19 08:02:05,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2023-11-19 08:02:05,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2023-11-19 08:02:05,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:05,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2023-11-19 08:02:05,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states 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 08:02:05,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:05,941 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:05,942 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 150 flow. Second operand 3 states and 661 transitions. [2023-11-19 08:02:05,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 238 flow [2023-11-19 08:02:05,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:02:05,944 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 143 flow [2023-11-19 08:02:05,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-11-19 08:02:05,947 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-11-19 08:02:05,948 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 143 flow [2023-11-19 08:02:05,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states 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 08:02:05,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:05,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:02:05,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:02:05,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:05,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:05,951 INFO L85 PathProgramCache]: Analyzing trace with hash 830797809, now seen corresponding path program 1 times [2023-11-19 08:02:05,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:05,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13027541] [2023-11-19 08:02:05,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:05,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:06,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:06,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:06,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13027541] [2023-11-19 08:02:06,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13027541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:06,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:06,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:06,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688464899] [2023-11-19 08:02:06,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:06,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:06,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:06,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:06,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:06,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 448 [2023-11-19 08:02:06,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states 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 08:02:06,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:06,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 448 [2023-11-19 08:02:06,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:06,612 INFO L124 PetriNetUnfolderBase]: 3561/4878 cut-off events. [2023-11-19 08:02:06,612 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-19 08:02:06,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10001 conditions, 4878 events. 3561/4878 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 21951 event pairs, 1915 based on Foata normal form. 0/2601 useless extension candidates. Maximal degree in co-relation 9989. Up to 3614 conditions per place. [2023-11-19 08:02:06,653 INFO L140 encePairwiseOnDemand]: 442/448 looper letters, 68 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2023-11-19 08:02:06,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 71 transitions, 338 flow [2023-11-19 08:02:06,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:06,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:06,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 690 transitions. [2023-11-19 08:02:06,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2023-11-19 08:02:06,657 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 690 transitions. [2023-11-19 08:02:06,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 690 transitions. [2023-11-19 08:02:06,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:06,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 690 transitions. [2023-11-19 08:02:06,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states 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 08:02:06,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:06,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:06,665 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 143 flow. Second operand 3 states and 690 transitions. [2023-11-19 08:02:06,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 71 transitions, 338 flow [2023-11-19 08:02:06,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 71 transitions, 337 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:02:06,668 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 165 flow [2023-11-19 08:02:06,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-11-19 08:02:06,669 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-11-19 08:02:06,669 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 165 flow [2023-11-19 08:02:06,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states 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 08:02:06,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:06,670 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 08:02:06,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:02:06,670 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:06,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:06,671 INFO L85 PathProgramCache]: Analyzing trace with hash -12156673, now seen corresponding path program 2 times [2023-11-19 08:02:06,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:06,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183454159] [2023-11-19 08:02:06,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:06,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:06,761 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 08:02:06,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:06,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183454159] [2023-11-19 08:02:06,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183454159] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:06,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164808732] [2023-11-19 08:02:06,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:02:06,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:06,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:06,764 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:06,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:02:06,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:02:06,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:02:06,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:02:06,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:06,880 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 08:02:06,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:06,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164808732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:06,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:02:06,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 08:02:06,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482540098] [2023-11-19 08:02:06,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:06,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:06,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:06,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:06,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:02:06,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 448 [2023-11-19 08:02:06,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 08:02:06,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:06,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 448 [2023-11-19 08:02:06,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:07,521 INFO L124 PetriNetUnfolderBase]: 3561/4877 cut-off events. [2023-11-19 08:02:07,522 INFO L125 PetriNetUnfolderBase]: For 804/804 co-relation queries the response was YES. [2023-11-19 08:02:07,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11096 conditions, 4877 events. 3561/4877 cut-off events. For 804/804 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 20921 event pairs, 2614 based on Foata normal form. 1/2821 useless extension candidates. Maximal degree in co-relation 11083. Up to 4872 conditions per place. [2023-11-19 08:02:07,617 INFO L140 encePairwiseOnDemand]: 445/448 looper letters, 41 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2023-11-19 08:02:07,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 249 flow [2023-11-19 08:02:07,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:07,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:07,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 668 transitions. [2023-11-19 08:02:07,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2023-11-19 08:02:07,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 668 transitions. [2023-11-19 08:02:07,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 668 transitions. [2023-11-19 08:02:07,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:07,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 668 transitions. [2023-11-19 08:02:07,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 08:02:07,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:07,628 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:07,628 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 165 flow. Second operand 3 states and 668 transitions. [2023-11-19 08:02:07,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 249 flow [2023-11-19 08:02:07,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 230 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-19 08:02:07,631 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 148 flow [2023-11-19 08:02:07,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-11-19 08:02:07,632 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2023-11-19 08:02:07,633 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 148 flow [2023-11-19 08:02:07,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 08:02:07,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:07,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:07,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:07,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:07,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:07,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:07,854 INFO L85 PathProgramCache]: Analyzing trace with hash -467206911, now seen corresponding path program 1 times [2023-11-19 08:02:07,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:07,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712355885] [2023-11-19 08:02:07,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:07,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:07,901 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 08:02:07,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:07,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712355885] [2023-11-19 08:02:07,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712355885] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:07,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508092067] [2023-11-19 08:02:07,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:07,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:07,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:07,903 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:07,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:02:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:08,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:02:08,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:08,031 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 08:02:08,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:08,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508092067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:08,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:02:08,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-19 08:02:08,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690007094] [2023-11-19 08:02:08,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:08,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:08,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:08,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:08,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:08,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 448 [2023-11-19 08:02:08,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 08:02:08,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:08,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 448 [2023-11-19 08:02:08,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:08,641 INFO L124 PetriNetUnfolderBase]: 3560/4876 cut-off events. [2023-11-19 08:02:08,642 INFO L125 PetriNetUnfolderBase]: For 574/574 co-relation queries the response was YES. [2023-11-19 08:02:08,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10863 conditions, 4876 events. 3560/4876 cut-off events. For 574/574 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 20914 event pairs, 2614 based on Foata normal form. 1/2821 useless extension candidates. Maximal degree in co-relation 10853. Up to 4876 conditions per place. [2023-11-19 08:02:08,675 INFO L140 encePairwiseOnDemand]: 445/448 looper letters, 44 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-19 08:02:08,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 233 flow [2023-11-19 08:02:08,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:08,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 657 transitions. [2023-11-19 08:02:08,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888392857142857 [2023-11-19 08:02:08,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 657 transitions. [2023-11-19 08:02:08,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 657 transitions. [2023-11-19 08:02:08,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:08,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 657 transitions. [2023-11-19 08:02:08,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states 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 08:02:08,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:08,686 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:08,686 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 148 flow. Second operand 3 states and 657 transitions. [2023-11-19 08:02:08,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 233 flow [2023-11-19 08:02:08,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 223 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:02:08,689 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 135 flow [2023-11-19 08:02:08,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2023-11-19 08:02:08,692 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2023-11-19 08:02:08,693 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 135 flow [2023-11-19 08:02:08,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 08:02:08,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:08,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:08,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:08,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 08:02:08,913 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:08,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:08,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1115455415, now seen corresponding path program 1 times [2023-11-19 08:02:08,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:08,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197599223] [2023-11-19 08:02:08,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:08,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:08,966 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 08:02:08,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:08,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197599223] [2023-11-19 08:02:08,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197599223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:08,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:08,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:08,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915685036] [2023-11-19 08:02:08,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:08,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:08,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:08,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:08,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:08,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 448 [2023-11-19 08:02:08,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 08:02:08,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:08,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 448 [2023-11-19 08:02:08,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:09,733 INFO L124 PetriNetUnfolderBase]: 4969/6711 cut-off events. [2023-11-19 08:02:09,733 INFO L125 PetriNetUnfolderBase]: For 765/765 co-relation queries the response was YES. [2023-11-19 08:02:09,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14884 conditions, 6711 events. 4969/6711 cut-off events. For 765/765 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 29622 event pairs, 2614 based on Foata normal form. 0/3974 useless extension candidates. Maximal degree in co-relation 14874. Up to 5019 conditions per place. [2023-11-19 08:02:09,779 INFO L140 encePairwiseOnDemand]: 441/448 looper letters, 69 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2023-11-19 08:02:09,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 350 flow [2023-11-19 08:02:09,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:09,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:09,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2023-11-19 08:02:09,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126488095238095 [2023-11-19 08:02:09,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 689 transitions. [2023-11-19 08:02:09,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 689 transitions. [2023-11-19 08:02:09,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:09,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 689 transitions. [2023-11-19 08:02:09,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 08:02:09,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:09,790 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:09,790 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 135 flow. Second operand 3 states and 689 transitions. [2023-11-19 08:02:09,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 72 transitions, 350 flow [2023-11-19 08:02:09,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 72 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:02:09,795 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 156 flow [2023-11-19 08:02:09,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2023-11-19 08:02:09,796 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2023-11-19 08:02:09,797 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 156 flow [2023-11-19 08:02:09,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 08:02:09,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:09,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:09,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:02:09,798 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:09,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:09,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1112037168, now seen corresponding path program 1 times [2023-11-19 08:02:09,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:09,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574956250] [2023-11-19 08:02:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:09,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:09,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:02:09,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:09,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574956250] [2023-11-19 08:02:09,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574956250] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:09,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298561214] [2023-11-19 08:02:09,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:09,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:09,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:09,869 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:09,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:02:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:09,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:02:09,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:10,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:10,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298561214] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:10,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:02:10,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2023-11-19 08:02:10,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624358108] [2023-11-19 08:02:10,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:10,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:02:10,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:10,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:02:10,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:02:10,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 448 [2023-11-19 08:02:10,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 156 flow. Second operand has 11 states, 11 states have (on average 193.9090909090909) internal successors, (2133), 11 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states 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 08:02:10,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:10,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 448 [2023-11-19 08:02:10,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:11,699 INFO L124 PetriNetUnfolderBase]: 5489/7508 cut-off events. [2023-11-19 08:02:11,700 INFO L125 PetriNetUnfolderBase]: For 1498/1498 co-relation queries the response was YES. [2023-11-19 08:02:11,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18307 conditions, 7508 events. 5489/7508 cut-off events. For 1498/1498 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 35657 event pairs, 1394 based on Foata normal form. 146/5211 useless extension candidates. Maximal degree in co-relation 18297. Up to 2420 conditions per place. [2023-11-19 08:02:11,750 INFO L140 encePairwiseOnDemand]: 438/448 looper letters, 134 selfloop transitions, 10 changer transitions 0/144 dead transitions. [2023-11-19 08:02:11,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 144 transitions, 735 flow [2023-11-19 08:02:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:02:11,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:02:11,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1670 transitions. [2023-11-19 08:02:11,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46595982142857145 [2023-11-19 08:02:11,758 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1670 transitions. [2023-11-19 08:02:11,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1670 transitions. [2023-11-19 08:02:11,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:11,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1670 transitions. [2023-11-19 08:02:11,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 208.75) internal successors, (1670), 8 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states 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 08:02:11,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 448.0) internal successors, (4032), 9 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states 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 08:02:11,773 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 448.0) internal successors, (4032), 9 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states 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 08:02:11,773 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 156 flow. Second operand 8 states and 1670 transitions. [2023-11-19 08:02:11,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 144 transitions, 735 flow [2023-11-19 08:02:11,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 144 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:02:11,779 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 179 flow [2023-11-19 08:02:11,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=179, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-11-19 08:02:11,780 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-11-19 08:02:11,780 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 179 flow [2023-11-19 08:02:11,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 193.9090909090909) internal successors, (2133), 11 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states 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 08:02:11,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:11,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:11,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:11,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 08:02:11,996 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:11,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:11,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1789146490, now seen corresponding path program 1 times [2023-11-19 08:02:11,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:11,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422949487] [2023-11-19 08:02:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:11,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:02:12,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:12,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422949487] [2023-11-19 08:02:12,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422949487] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:12,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947063271] [2023-11-19 08:02:12,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:12,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:12,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:12,060 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:12,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:02:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:12,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:02:12,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:12,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:12,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:12,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:12,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947063271] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:12,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:02:12,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-11-19 08:02:12,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272899787] [2023-11-19 08:02:12,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:12,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:02:12,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:12,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:02:12,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:02:12,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 448 [2023-11-19 08:02:12,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 179 flow. Second operand has 12 states, 12 states have (on average 192.33333333333334) internal successors, (2308), 12 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states 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 08:02:12,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:12,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 448 [2023-11-19 08:02:12,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:14,094 INFO L124 PetriNetUnfolderBase]: 6826/9287 cut-off events. [2023-11-19 08:02:14,094 INFO L125 PetriNetUnfolderBase]: For 3706/3706 co-relation queries the response was YES. [2023-11-19 08:02:14,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23767 conditions, 9287 events. 6826/9287 cut-off events. For 3706/3706 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 43512 event pairs, 2094 based on Foata normal form. 46/6236 useless extension candidates. Maximal degree in co-relation 23755. Up to 3831 conditions per place. [2023-11-19 08:02:14,148 INFO L140 encePairwiseOnDemand]: 436/448 looper letters, 131 selfloop transitions, 13 changer transitions 2/146 dead transitions. [2023-11-19 08:02:14,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 146 transitions, 780 flow [2023-11-19 08:02:14,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:02:14,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 08:02:14,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1848 transitions. [2023-11-19 08:02:14,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-11-19 08:02:14,157 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1848 transitions. [2023-11-19 08:02:14,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1848 transitions. [2023-11-19 08:02:14,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:14,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1848 transitions. [2023-11-19 08:02:14,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 205.33333333333334) internal successors, (1848), 9 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 08:02:14,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 448.0) internal successors, (4480), 10 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states 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 08:02:14,185 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 448.0) internal successors, (4480), 10 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states 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 08:02:14,193 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 179 flow. Second operand 9 states and 1848 transitions. [2023-11-19 08:02:14,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 146 transitions, 780 flow [2023-11-19 08:02:14,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 146 transitions, 759 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:02:14,200 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 249 flow [2023-11-19 08:02:14,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=249, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-11-19 08:02:14,201 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 11 predicate places. [2023-11-19 08:02:14,201 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 249 flow [2023-11-19 08:02:14,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 192.33333333333334) internal successors, (2308), 12 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states 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 08:02:14,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:14,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:14,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:14,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 08:02:14,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:14,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:14,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1785527947, now seen corresponding path program 1 times [2023-11-19 08:02:14,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:14,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622251357] [2023-11-19 08:02:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:14,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:14,503 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 08:02:14,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:14,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622251357] [2023-11-19 08:02:14,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622251357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:14,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:14,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:14,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575592524] [2023-11-19 08:02:14,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:14,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:14,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:14,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:14,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:02:14,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 448 [2023-11-19 08:02:14,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 208.5) internal successors, (834), 4 states have internal predecessors, (834), 0 states have call successors, (0), 0 states 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 08:02:14,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:14,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 448 [2023-11-19 08:02:14,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:15,370 INFO L124 PetriNetUnfolderBase]: 4448/6073 cut-off events. [2023-11-19 08:02:15,370 INFO L125 PetriNetUnfolderBase]: For 4777/4777 co-relation queries the response was YES. [2023-11-19 08:02:15,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17875 conditions, 6073 events. 4448/6073 cut-off events. For 4777/4777 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 26129 event pairs, 2068 based on Foata normal form. 0/4804 useless extension candidates. Maximal degree in co-relation 17859. Up to 4042 conditions per place. [2023-11-19 08:02:15,417 INFO L140 encePairwiseOnDemand]: 443/448 looper letters, 68 selfloop transitions, 5 changer transitions 13/86 dead transitions. [2023-11-19 08:02:15,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 592 flow [2023-11-19 08:02:15,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:02:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:02:15,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 881 transitions. [2023-11-19 08:02:15,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4916294642857143 [2023-11-19 08:02:15,422 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 881 transitions. [2023-11-19 08:02:15,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 881 transitions. [2023-11-19 08:02:15,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:15,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 881 transitions. [2023-11-19 08:02:15,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 0 states have call successors, (0), 0 states 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 08:02:15,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 448.0) internal successors, (2240), 5 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 08:02:15,431 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 448.0) internal successors, (2240), 5 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 08:02:15,432 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 249 flow. Second operand 4 states and 881 transitions. [2023-11-19 08:02:15,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 592 flow [2023-11-19 08:02:15,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 86 transitions, 577 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:02:15,443 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 209 flow [2023-11-19 08:02:15,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2023-11-19 08:02:15,444 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-11-19 08:02:15,444 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 209 flow [2023-11-19 08:02:15,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.5) internal successors, (834), 4 states have internal predecessors, (834), 0 states have call successors, (0), 0 states 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 08:02:15,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:15,445 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:15,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:02:15,446 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:15,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:15,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1643518709, now seen corresponding path program 1 times [2023-11-19 08:02:15,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:15,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31930968] [2023-11-19 08:02:15,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:15,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 08:02:15,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:15,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31930968] [2023-11-19 08:02:15,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31930968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:15,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383363934] [2023-11-19 08:02:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:15,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:15,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:15,532 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:15,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:02:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:15,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:02:15,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:15,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:15,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:15,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383363934] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:15,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:02:15,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 15 [2023-11-19 08:02:15,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847970412] [2023-11-19 08:02:15,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:15,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 08:02:15,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:15,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 08:02:15,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:02:16,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 448 [2023-11-19 08:02:16,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 209 flow. Second operand has 15 states, 15 states have (on average 193.8) internal successors, (2907), 15 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states 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 08:02:16,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:16,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 448 [2023-11-19 08:02:16,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:17,631 INFO L124 PetriNetUnfolderBase]: 8064/10829 cut-off events. [2023-11-19 08:02:17,631 INFO L125 PetriNetUnfolderBase]: For 9265/9265 co-relation queries the response was YES. [2023-11-19 08:02:17,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33351 conditions, 10829 events. 8064/10829 cut-off events. For 9265/9265 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 50827 event pairs, 2598 based on Foata normal form. 130/9459 useless extension candidates. Maximal degree in co-relation 33335. Up to 3365 conditions per place. [2023-11-19 08:02:17,705 INFO L140 encePairwiseOnDemand]: 439/448 looper letters, 160 selfloop transitions, 14 changer transitions 9/183 dead transitions. [2023-11-19 08:02:17,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 183 transitions, 1234 flow [2023-11-19 08:02:17,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:02:17,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 08:02:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2068 transitions. [2023-11-19 08:02:17,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4616071428571429 [2023-11-19 08:02:17,714 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2068 transitions. [2023-11-19 08:02:17,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2068 transitions. [2023-11-19 08:02:17,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:17,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2068 transitions. [2023-11-19 08:02:17,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 206.8) internal successors, (2068), 10 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states 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 08:02:17,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 448.0) internal successors, (4928), 11 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states 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 08:02:17,731 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 448.0) internal successors, (4928), 11 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states 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 08:02:17,731 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 209 flow. Second operand 10 states and 2068 transitions. [2023-11-19 08:02:17,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 183 transitions, 1234 flow [2023-11-19 08:02:17,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 183 transitions, 1157 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-11-19 08:02:17,775 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 258 flow [2023-11-19 08:02:17,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=258, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-11-19 08:02:17,777 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-11-19 08:02:17,777 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 258 flow [2023-11-19 08:02:17,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 193.8) internal successors, (2907), 15 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states 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 08:02:17,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:17,778 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:17,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:17,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:17,998 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:17,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:17,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1600549386, now seen corresponding path program 1 times [2023-11-19 08:02:17,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:17,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818551218] [2023-11-19 08:02:17,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:17,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 08:02:18,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:18,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818551218] [2023-11-19 08:02:18,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818551218] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:18,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687258174] [2023-11-19 08:02:18,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:18,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:18,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:18,090 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:18,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:02:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:18,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:02:18,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 08:02:18,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:18,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687258174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:18,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:02:18,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 08:02:18,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436612041] [2023-11-19 08:02:18,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:18,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:18,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:18,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:18,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:18,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 448 [2023-11-19 08:02:18,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 210.5) internal successors, (842), 4 states have internal predecessors, (842), 0 states have call successors, (0), 0 states 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 08:02:18,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:18,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 448 [2023-11-19 08:02:18,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:19,140 INFO L124 PetriNetUnfolderBase]: 6850/9275 cut-off events. [2023-11-19 08:02:19,141 INFO L125 PetriNetUnfolderBase]: For 7677/7677 co-relation queries the response was YES. [2023-11-19 08:02:19,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26975 conditions, 9275 events. 6850/9275 cut-off events. For 7677/7677 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 42122 event pairs, 877 based on Foata normal form. 680/7918 useless extension candidates. Maximal degree in co-relation 26959. Up to 5366 conditions per place. [2023-11-19 08:02:19,203 INFO L140 encePairwiseOnDemand]: 443/448 looper letters, 91 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2023-11-19 08:02:19,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 96 transitions, 654 flow [2023-11-19 08:02:19,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:02:19,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:02:19,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 898 transitions. [2023-11-19 08:02:19,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011160714285714 [2023-11-19 08:02:19,208 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 898 transitions. [2023-11-19 08:02:19,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 898 transitions. [2023-11-19 08:02:19,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:19,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 898 transitions. [2023-11-19 08:02:19,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.5) internal successors, (898), 4 states have internal predecessors, (898), 0 states have call successors, (0), 0 states 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 08:02:19,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 448.0) internal successors, (2240), 5 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 08:02:19,216 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 448.0) internal successors, (2240), 5 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 08:02:19,216 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 258 flow. Second operand 4 states and 898 transitions. [2023-11-19 08:02:19,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 96 transitions, 654 flow [2023-11-19 08:02:19,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 96 transitions, 597 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-11-19 08:02:19,233 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 207 flow [2023-11-19 08:02:19,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-11-19 08:02:19,234 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2023-11-19 08:02:19,234 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 207 flow [2023-11-19 08:02:19,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 210.5) internal successors, (842), 4 states have internal predecessors, (842), 0 states have call successors, (0), 0 states 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 08:02:19,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:19,235 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:19,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:19,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 08:02:19,455 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:19,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:19,455 INFO L85 PathProgramCache]: Analyzing trace with hash -529643322, now seen corresponding path program 2 times [2023-11-19 08:02:19,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:19,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739735227] [2023-11-19 08:02:19,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:19,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 08:02:19,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:19,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739735227] [2023-11-19 08:02:19,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739735227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:19,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:19,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:02:19,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010015443] [2023-11-19 08:02:19,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:19,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:19,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:19,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:19,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:19,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 448 [2023-11-19 08:02:19,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states 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 08:02:19,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:19,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 448 [2023-11-19 08:02:19,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:20,279 INFO L124 PetriNetUnfolderBase]: 6413/8668 cut-off events. [2023-11-19 08:02:20,280 INFO L125 PetriNetUnfolderBase]: For 6239/6239 co-relation queries the response was YES. [2023-11-19 08:02:20,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24536 conditions, 8668 events. 6413/8668 cut-off events. For 6239/6239 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 37747 event pairs, 4247 based on Foata normal form. 170/7055 useless extension candidates. Maximal degree in co-relation 24522. Up to 8668 conditions per place. [2023-11-19 08:02:20,397 INFO L140 encePairwiseOnDemand]: 446/448 looper letters, 45 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-11-19 08:02:20,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 293 flow [2023-11-19 08:02:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:20,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2023-11-19 08:02:20,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49255952380952384 [2023-11-19 08:02:20,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2023-11-19 08:02:20,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2023-11-19 08:02:20,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:20,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2023-11-19 08:02:20,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states 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 08:02:20,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:20,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 08:02:20,407 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 207 flow. Second operand 3 states and 662 transitions. [2023-11-19 08:02:20,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 293 flow [2023-11-19 08:02:20,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 46 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:02:20,416 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 196 flow [2023-11-19 08:02:20,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-11-19 08:02:20,417 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-11-19 08:02:20,417 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 196 flow [2023-11-19 08:02:20,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states 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 08:02:20,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:20,418 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1] [2023-11-19 08:02:20,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 08:02:20,418 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:20,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:20,419 INFO L85 PathProgramCache]: Analyzing trace with hash -273228010, now seen corresponding path program 2 times [2023-11-19 08:02:20,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:20,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785327054] [2023-11-19 08:02:20,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:20,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:02:20,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:20,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785327054] [2023-11-19 08:02:20,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785327054] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:20,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22094478] [2023-11-19 08:02:20,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:02:20,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:20,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:20,497 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:20,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:02:20,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:02:20,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:02:20,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:02:20,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:02:20,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:02:20,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22094478] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:20,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:02:20,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2, 2] total 8 [2023-11-19 08:02:20,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382249409] [2023-11-19 08:02:20,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:20,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:02:20,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:02:20,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:02:20,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 448 [2023-11-19 08:02:20,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 196 flow. Second operand has 9 states, 9 states have (on average 200.22222222222223) internal successors, (1802), 9 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states 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 08:02:20,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:20,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 448 [2023-11-19 08:02:20,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:21,950 INFO L124 PetriNetUnfolderBase]: 7680/10253 cut-off events. [2023-11-19 08:02:21,950 INFO L125 PetriNetUnfolderBase]: For 4483/4483 co-relation queries the response was YES. [2023-11-19 08:02:21,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28292 conditions, 10253 events. 7680/10253 cut-off events. For 4483/4483 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 45784 event pairs, 1237 based on Foata normal form. 0/8190 useless extension candidates. Maximal degree in co-relation 28277. Up to 2932 conditions per place. [2023-11-19 08:02:21,994 INFO L140 encePairwiseOnDemand]: 441/448 looper letters, 119 selfloop transitions, 17 changer transitions 18/154 dead transitions. [2023-11-19 08:02:21,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 154 transitions, 901 flow [2023-11-19 08:02:21,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:02:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:02:22,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1698 transitions. [2023-11-19 08:02:22,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47377232142857145 [2023-11-19 08:02:22,003 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1698 transitions. [2023-11-19 08:02:22,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1698 transitions. [2023-11-19 08:02:22,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:22,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1698 transitions. [2023-11-19 08:02:22,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 212.25) internal successors, (1698), 8 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states 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 08:02:22,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 448.0) internal successors, (4032), 9 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states 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 08:02:22,019 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 448.0) internal successors, (4032), 9 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states 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 08:02:22,019 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 196 flow. Second operand 8 states and 1698 transitions. [2023-11-19 08:02:22,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 154 transitions, 901 flow [2023-11-19 08:02:22,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 154 transitions, 900 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:02:22,033 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 242 flow [2023-11-19 08:02:22,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=242, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2023-11-19 08:02:22,033 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-11-19 08:02:22,034 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 242 flow [2023-11-19 08:02:22,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 200.22222222222223) internal successors, (1802), 9 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states 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 08:02:22,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:22,035 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:22,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:22,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 08:02:22,248 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:22,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash 760926942, now seen corresponding path program 1 times [2023-11-19 08:02:22,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:22,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755974826] [2023-11-19 08:02:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:22,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:02:22,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:22,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755974826] [2023-11-19 08:02:22,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755974826] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:22,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450668691] [2023-11-19 08:02:22,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:22,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:22,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:22,472 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:22,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:02:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:22,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:02:22,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:02:22,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:02:22,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450668691] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:22,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:02:22,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-19 08:02:22,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442830231] [2023-11-19 08:02:22,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:22,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 08:02:22,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:22,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 08:02:22,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-11-19 08:02:23,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 448 [2023-11-19 08:02:23,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 242 flow. Second operand has 18 states, 18 states have (on average 191.77777777777777) internal successors, (3452), 18 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states 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 08:02:23,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:23,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 448 [2023-11-19 08:02:23,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:24,682 INFO L124 PetriNetUnfolderBase]: 5878/7967 cut-off events. [2023-11-19 08:02:24,682 INFO L125 PetriNetUnfolderBase]: For 7470/7470 co-relation queries the response was YES. [2023-11-19 08:02:24,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23660 conditions, 7967 events. 5878/7967 cut-off events. For 7470/7470 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 34385 event pairs, 3376 based on Foata normal form. 68/6328 useless extension candidates. Maximal degree in co-relation 23643. Up to 6810 conditions per place. [2023-11-19 08:02:24,729 INFO L140 encePairwiseOnDemand]: 441/448 looper letters, 38 selfloop transitions, 4 changer transitions 54/96 dead transitions. [2023-11-19 08:02:24,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 96 transitions, 622 flow [2023-11-19 08:02:24,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:02:24,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:02:24,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1602 transitions. [2023-11-19 08:02:24,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44698660714285715 [2023-11-19 08:02:24,736 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1602 transitions. [2023-11-19 08:02:24,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1602 transitions. [2023-11-19 08:02:24,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:24,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1602 transitions. [2023-11-19 08:02:24,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 200.25) internal successors, (1602), 8 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states 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 08:02:24,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 448.0) internal successors, (4032), 9 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states 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 08:02:24,751 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 448.0) internal successors, (4032), 9 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states 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 08:02:24,751 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 242 flow. Second operand 8 states and 1602 transitions. [2023-11-19 08:02:24,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 96 transitions, 622 flow [2023-11-19 08:02:24,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 96 transitions, 534 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-11-19 08:02:24,783 INFO L231 Difference]: Finished difference. Result has 60 places, 42 transitions, 171 flow [2023-11-19 08:02:24,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=171, PETRI_PLACES=60, PETRI_TRANSITIONS=42} [2023-11-19 08:02:24,784 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 10 predicate places. [2023-11-19 08:02:24,784 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 42 transitions, 171 flow [2023-11-19 08:02:24,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 191.77777777777777) internal successors, (3452), 18 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states 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 08:02:24,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:24,786 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:24,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:25,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 08:02:25,002 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-19 08:02:25,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:25,002 INFO L85 PathProgramCache]: Analyzing trace with hash 339178959, now seen corresponding path program 2 times [2023-11-19 08:02:25,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:25,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232713073] [2023-11-19 08:02:25,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:25,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:02:25,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:25,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232713073] [2023-11-19 08:02:25,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232713073] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:25,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629677508] [2023-11-19 08:02:25,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:02:25,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:25,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:25,083 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:25,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 08:02:25,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:02:25,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:02:25,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:02:25,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:02:25,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:25,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:02:25,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629677508] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:25,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:02:25,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2, 2] total 6 [2023-11-19 08:02:25,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980239237] [2023-11-19 08:02:25,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:25,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:02:25,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:25,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:02:25,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:02:25,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 448 [2023-11-19 08:02:25,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 42 transitions, 171 flow. Second operand has 7 states, 7 states have (on average 206.42857142857142) internal successors, (1445), 7 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states 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 08:02:25,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:25,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 448 [2023-11-19 08:02:25,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:26,166 INFO L124 PetriNetUnfolderBase]: 6631/8827 cut-off events. [2023-11-19 08:02:26,166 INFO L125 PetriNetUnfolderBase]: For 4046/4046 co-relation queries the response was YES. [2023-11-19 08:02:26,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24827 conditions, 8827 events. 6631/8827 cut-off events. For 4046/4046 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 37269 event pairs, 501 based on Foata normal form. 0/6812 useless extension candidates. Maximal degree in co-relation 24809. Up to 2169 conditions per place. [2023-11-19 08:02:26,196 INFO L140 encePairwiseOnDemand]: 442/448 looper letters, 0 selfloop transitions, 0 changer transitions 145/145 dead transitions. [2023-11-19 08:02:26,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 145 transitions, 835 flow [2023-11-19 08:02:26,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:02:26,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:02:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1518 transitions. [2023-11-19 08:02:26,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4840561224489796 [2023-11-19 08:02:26,202 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1518 transitions. [2023-11-19 08:02:26,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1518 transitions. [2023-11-19 08:02:26,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:26,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1518 transitions. [2023-11-19 08:02:26,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 216.85714285714286) internal successors, (1518), 7 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states 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 08:02:26,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 448.0) internal successors, (3584), 8 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states 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 08:02:26,210 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 448.0) internal successors, (3584), 8 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states 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 08:02:26,211 INFO L175 Difference]: Start difference. First operand has 60 places, 42 transitions, 171 flow. Second operand 7 states and 1518 transitions. [2023-11-19 08:02:26,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 145 transitions, 835 flow [2023-11-19 08:02:26,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 145 transitions, 771 flow, removed 22 selfloop flow, removed 9 redundant places. [2023-11-19 08:02:26,245 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2023-11-19 08:02:26,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2023-11-19 08:02:26,246 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-11-19 08:02:26,246 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2023-11-19 08:02:26,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 206.42857142857142) internal successors, (1445), 7 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states 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 08:02:26,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 37 remaining) [2023-11-19 08:02:26,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 37 remaining) [2023-11-19 08:02:26,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 37 remaining) [2023-11-19 08:02:26,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 37 remaining) [2023-11-19 08:02:26,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 37 remaining) [2023-11-19 08:02:26,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 37 remaining) [2023-11-19 08:02:26,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 37 remaining) [2023-11-19 08:02:26,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 37 remaining) [2023-11-19 08:02:26,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 37 remaining) [2023-11-19 08:02:26,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 37 remaining) [2023-11-19 08:02:26,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 37 remaining) [2023-11-19 08:02:26,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 37 remaining) [2023-11-19 08:02:26,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 37 remaining) [2023-11-19 08:02:26,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 37 remaining) [2023-11-19 08:02:26,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 37 remaining) [2023-11-19 08:02:26,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 37 remaining) [2023-11-19 08:02:26,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 37 remaining) [2023-11-19 08:02:26,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 37 remaining) [2023-11-19 08:02:26,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 37 remaining) [2023-11-19 08:02:26,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 37 remaining) [2023-11-19 08:02:26,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 37 remaining) [2023-11-19 08:02:26,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 37 remaining) [2023-11-19 08:02:26,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 37 remaining) [2023-11-19 08:02:26,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 37 remaining) [2023-11-19 08:02:26,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 37 remaining) [2023-11-19 08:02:26,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 37 remaining) [2023-11-19 08:02:26,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 37 remaining) [2023-11-19 08:02:26,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 37 remaining) [2023-11-19 08:02:26,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 37 remaining) [2023-11-19 08:02:26,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 37 remaining) [2023-11-19 08:02:26,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 37 remaining) [2023-11-19 08:02:26,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 37 remaining) [2023-11-19 08:02:26,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 37 remaining) [2023-11-19 08:02:26,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 37 remaining) [2023-11-19 08:02:26,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 37 remaining) [2023-11-19 08:02:26,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 37 remaining) [2023-11-19 08:02:26,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 37 remaining) [2023-11-19 08:02:26,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:26,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 08:02:26,474 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:26,480 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 08:02:26,481 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:02:26,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:02:26 BasicIcfg [2023-11-19 08:02:26,487 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:02:26,487 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:02:26,487 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:02:26,488 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:02:26,488 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:50" (3/4) ... [2023-11-19 08:02:26,490 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 08:02:26,494 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 08:02:26,494 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 08:02:26,494 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-19 08:02:26,503 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-19 08:02:26,504 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 08:02:26,504 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 08:02:26,504 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 08:02:26,646 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:02:26,646 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 08:02:26,647 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:02:26,647 INFO L158 Benchmark]: Toolchain (without parser) took 36771.05ms. Allocated memory was 167.8MB in the beginning and 1.2GB in the end (delta: 989.9MB). Free memory was 124.3MB in the beginning and 422.0MB in the end (delta: -297.7MB). Peak memory consumption was 694.2MB. Max. memory is 16.1GB. [2023-11-19 08:02:26,648 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 167.8MB. Free memory was 134.0MB in the beginning and 133.9MB in the end (delta: 43.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:02:26,648 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.84ms. Allocated memory is still 167.8MB. Free memory was 124.3MB in the beginning and 112.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 08:02:26,648 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.05ms. Allocated memory is still 167.8MB. Free memory was 112.2MB in the beginning and 110.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:02:26,649 INFO L158 Benchmark]: Boogie Preprocessor took 42.15ms. Allocated memory is still 167.8MB. Free memory was 110.2MB in the beginning and 108.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:02:26,649 INFO L158 Benchmark]: RCFGBuilder took 630.82ms. Allocated memory is still 167.8MB. Free memory was 108.6MB in the beginning and 88.1MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 08:02:26,650 INFO L158 Benchmark]: TraceAbstraction took 35583.03ms. Allocated memory was 167.8MB in the beginning and 1.2GB in the end (delta: 989.9MB). Free memory was 87.6MB in the beginning and 428.3MB in the end (delta: -340.7MB). Peak memory consumption was 652.3MB. Max. memory is 16.1GB. [2023-11-19 08:02:26,650 INFO L158 Benchmark]: Witness Printer took 159.49ms. Allocated memory is still 1.2GB. Free memory was 428.3MB in the beginning and 422.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 08:02:26,652 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 167.8MB. Free memory was 134.0MB in the beginning and 133.9MB in the end (delta: 43.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.84ms. Allocated memory is still 167.8MB. Free memory was 124.3MB in the beginning and 112.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.05ms. Allocated memory is still 167.8MB. Free memory was 112.2MB in the beginning and 110.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.15ms. Allocated memory is still 167.8MB. Free memory was 110.2MB in the beginning and 108.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 630.82ms. Allocated memory is still 167.8MB. Free memory was 108.6MB in the beginning and 88.1MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 35583.03ms. Allocated memory was 167.8MB in the beginning and 1.2GB in the end (delta: 989.9MB). Free memory was 87.6MB in the beginning and 428.3MB in the end (delta: -340.7MB). Peak memory consumption was 652.3MB. Max. memory is 16.1GB. * Witness Printer took 159.49ms. Allocated memory is still 1.2GB. Free memory was 428.3MB in the beginning and 422.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.6s, 197 PlacesBefore, 50 PlacesAfterwards, 201 TransitionsBefore, 46 TransitionsAfterwards, 8286 CoEnabledTransitionPairs, 7 FixpointIterations, 80 TrivialSequentialCompositions, 99 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 19 ConcurrentYvCompositions, 8 ChoiceCompositions, 220 TotalNumberOfCompositions, 9075 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8300, independent: 8258, independent conditional: 0, independent unconditional: 8258, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4579, independent: 4567, independent conditional: 0, independent unconditional: 4567, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8300, independent: 3691, independent conditional: 0, independent unconditional: 3691, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 4579, unknown conditional: 0, unknown unconditional: 4579] , Statistics on independence cache: Total cache size (in pairs): 162, Positive cache size: 157, Positive conditional cache size: 0, Positive unconditional cache size: 157, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 306 locations, 37 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 35.3s, OverallIterations: 18, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 19.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2921 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2416 mSDsluCounter, 1211 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1070 mSDsCounter, 152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6606 IncrementalHoareTripleChecker+Invalid, 6758 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 152 mSolverCounterUnsat, 141 mSDtfsCounter, 6606 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 114 SyntacticMatches, 5 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=13, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 246 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 284 ConstructedInterpolants, 0 QuantifiedInterpolants, 871 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1407 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 35 InterpolantComputations, 11 PerfectInterpolantSequences, 112/171 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 08:02:26,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08b706b-6233-4f8f-86b3-6dfa9b751875/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE