./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya --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 60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:52:02,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:52:02,728 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 05:52:02,733 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:52:02,733 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:52:02,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:52:02,760 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:52:02,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:52:02,762 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:52:02,762 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:52:02,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:52:02,763 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:52:02,764 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:52:02,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:52:02,765 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:52:02,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:52:02,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:52:02,767 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:52:02,767 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:52:02,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:52:02,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:52:02,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:52:02,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:52:02,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:52:02,770 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 05:52:02,771 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:52:02,771 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:52:02,772 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:52:02,772 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:52:02,772 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:52:02,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:52:02,773 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:52:02,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:52:02,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:52:02,774 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:52:02,774 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:52:02,775 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:52:02,775 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:52:02,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:52:02,775 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:52:02,775 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:52:02,776 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:52:02,776 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:52:02,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:52:02,776 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_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c [2023-11-29 05:52:03,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:52:03,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:52:03,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:52:03,027 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:52:03,028 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:52:03,029 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2023-11-29 05:52:05,718 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:52:05,909 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:52:05,910 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2023-11-29 05:52:05,919 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/data/3a8b85946/e050957decca4b26a881f91cd4f57602/FLAG4c208e746 [2023-11-29 05:52:05,930 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/data/3a8b85946/e050957decca4b26a881f91cd4f57602 [2023-11-29 05:52:05,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:52:05,933 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:52:05,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:52:05,935 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:52:05,940 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:52:05,941 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:52:05" (1/1) ... [2023-11-29 05:52:05,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b76868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:52:05, skipping insertion in model container [2023-11-29 05:52:05,942 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:52:05" (1/1) ... [2023-11-29 05:52:05,968 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:52:06,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:52:06,158 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:52:06,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:52:06,199 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:52:06,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:52:06 WrapperNode [2023-11-29 05:52:06,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:52:06,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:52:06,201 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:52:06,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:52:06,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:52:06" (1/1) ... [2023-11-29 05:52:06,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:52:06" (1/1) ... [2023-11-29 05:52:06,250 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 342 [2023-11-29 05:52:06,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:52:06,251 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:52:06,251 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:52:06,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:52:06,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:52:06" (1/1) ... [2023-11-29 05:52:06,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:52:06" (1/1) ... [2023-11-29 05:52:06,268 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:52:06" (1/1) ... [2023-11-29 05:52:06,285 INFO L175 MemorySlicer]: Split 17 memory accesses to 5 slices as follows [2, 2, 2, 9, 2]. 53 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 3, 1]. [2023-11-29 05:52:06,285 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:52:06" (1/1) ... [2023-11-29 05:52:06,285 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:52:06" (1/1) ... [2023-11-29 05:52:06,298 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:52:06" (1/1) ... [2023-11-29 05:52:06,303 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:52:06" (1/1) ... [2023-11-29 05:52:06,307 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:52:06" (1/1) ... [2023-11-29 05:52:06,309 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:52:06" (1/1) ... [2023-11-29 05:52:06,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:52:06,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:52:06,316 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:52:06,316 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:52:06,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:52:06" (1/1) ... [2023-11-29 05:52:06,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:52:06,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:52:06,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:52:06,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:52:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:52:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:52:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:52:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:52:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:52:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 05:52:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 05:52:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:52:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:52:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:52:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 05:52:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 05:52:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 05:52:06,382 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 05:52:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 05:52:06,382 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 05:52:06,383 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 05:52:06,383 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 05:52:06,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:52:06,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:52:06,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:52:06,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:52:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 05:52:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 05:52:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:52:06,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:52:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:52:06,386 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 05:52:06,516 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:52:06,518 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:52:07,017 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:52:07,354 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:52:07,354 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-29 05:52:07,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:52:07 BoogieIcfgContainer [2023-11-29 05:52:07,355 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:52:07,357 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:52:07,357 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:52:07,359 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:52:07,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:52:05" (1/3) ... [2023-11-29 05:52:07,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691d4ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:52:07, skipping insertion in model container [2023-11-29 05:52:07,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:52:06" (2/3) ... [2023-11-29 05:52:07,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691d4ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:52:07, skipping insertion in model container [2023-11-29 05:52:07,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:52:07" (3/3) ... [2023-11-29 05:52:07,362 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2023-11-29 05:52:07,369 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 05:52:07,377 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:52:07,377 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-29 05:52:07,377 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:52:07,450 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 05:52:07,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 109 transitions, 239 flow [2023-11-29 05:52:07,519 INFO L124 PetriNetUnfolderBase]: 12/106 cut-off events. [2023-11-29 05:52:07,520 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 05:52:07,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 12/106 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 393 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-11-29 05:52:07,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 109 transitions, 239 flow [2023-11-29 05:52:07,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 104 transitions, 223 flow [2023-11-29 05:52:07,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:52:07,544 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;@6fb20556, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:52:07,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2023-11-29 05:52:07,548 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:52:07,548 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 05:52:07,548 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:52:07,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:07,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 05:52:07,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:52:07,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:07,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1010812, now seen corresponding path program 1 times [2023-11-29 05:52:07,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:07,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886885917] [2023-11-29 05:52:07,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:07,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:52:07,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:07,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886885917] [2023-11-29 05:52:07,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886885917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:07,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:52:07,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:52:07,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415193351] [2023-11-29 05:52:07,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:07,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:52:07,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:07,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:52:07,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:52:07,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 05:52:07,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 104 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:07,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:07,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 05:52:07,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:08,952 INFO L124 PetriNetUnfolderBase]: 4342/8873 cut-off events. [2023-11-29 05:52:08,953 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2023-11-29 05:52:08,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14887 conditions, 8873 events. 4342/8873 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 77358 event pairs, 2884 based on Foata normal form. 3/6993 useless extension candidates. Maximal degree in co-relation 13590. Up to 5788 conditions per place. [2023-11-29 05:52:09,025 INFO L140 encePairwiseOnDemand]: 93/109 looper letters, 52 selfloop transitions, 10 changer transitions 0/113 dead transitions. [2023-11-29 05:52:09,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 113 transitions, 365 flow [2023-11-29 05:52:09,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:52:09,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:52:09,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 284 transitions. [2023-11-29 05:52:09,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6513761467889908 [2023-11-29 05:52:09,039 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 284 transitions. [2023-11-29 05:52:09,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 284 transitions. [2023-11-29 05:52:09,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:09,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 284 transitions. [2023-11-29 05:52:09,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:09,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:09,052 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:09,053 INFO L175 Difference]: Start difference. First operand has 102 places, 104 transitions, 223 flow. Second operand 4 states and 284 transitions. [2023-11-29 05:52:09,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 113 transitions, 365 flow [2023-11-29 05:52:09,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 113 transitions, 356 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 05:52:09,063 INFO L231 Difference]: Finished difference. Result has 103 places, 113 transitions, 302 flow [2023-11-29 05:52:09,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=103, PETRI_TRANSITIONS=113} [2023-11-29 05:52:09,068 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 1 predicate places. [2023-11-29 05:52:09,068 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 113 transitions, 302 flow [2023-11-29 05:52:09,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:09,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:09,069 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 05:52:09,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:52:09,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:52:09,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:09,070 INFO L85 PathProgramCache]: Analyzing trace with hash 49343876, now seen corresponding path program 1 times [2023-11-29 05:52:09,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:09,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706458047] [2023-11-29 05:52:09,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:09,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:52:09,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:09,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706458047] [2023-11-29 05:52:09,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706458047] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:09,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525050929] [2023-11-29 05:52:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:09,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:09,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:52:09,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:52:09,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:52:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:09,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:52:09,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:52:09,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:52:09,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525050929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:09,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:52:09,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 05:52:09,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481447432] [2023-11-29 05:52:09,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:09,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:52:09,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:09,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:52:09,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:52:09,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 05:52:09,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 113 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:09,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:09,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 05:52:09,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:10,565 INFO L124 PetriNetUnfolderBase]: 4342/8870 cut-off events. [2023-11-29 05:52:10,566 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-11-29 05:52:10,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14833 conditions, 8870 events. 4342/8870 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 77336 event pairs, 2884 based on Foata normal form. 3/6995 useless extension candidates. Maximal degree in co-relation 14760. Up to 5773 conditions per place. [2023-11-29 05:52:10,639 INFO L140 encePairwiseOnDemand]: 96/109 looper letters, 42 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2023-11-29 05:52:10,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 110 transitions, 408 flow [2023-11-29 05:52:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:52:10,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:52:10,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 386 transitions. [2023-11-29 05:52:10,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902140672782875 [2023-11-29 05:52:10,643 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 386 transitions. [2023-11-29 05:52:10,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 386 transitions. [2023-11-29 05:52:10,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:10,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 386 transitions. [2023-11-29 05:52:10,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:10,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:10,650 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:10,650 INFO L175 Difference]: Start difference. First operand has 103 places, 113 transitions, 302 flow. Second operand 6 states and 386 transitions. [2023-11-29 05:52:10,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 110 transitions, 408 flow [2023-11-29 05:52:10,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 110 transitions, 408 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:52:10,654 INFO L231 Difference]: Finished difference. Result has 105 places, 110 transitions, 324 flow [2023-11-29 05:52:10,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=105, PETRI_TRANSITIONS=110} [2023-11-29 05:52:10,655 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 3 predicate places. [2023-11-29 05:52:10,656 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 110 transitions, 324 flow [2023-11-29 05:52:10,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:10,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:10,656 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 05:52:10,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:52:10,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:10,857 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:52:10,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:10,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1529661176, now seen corresponding path program 1 times [2023-11-29 05:52:10,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:10,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126435207] [2023-11-29 05:52:10,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:10,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:52:10,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:10,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126435207] [2023-11-29 05:52:10,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126435207] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:10,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854251854] [2023-11-29 05:52:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:10,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:10,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:52:10,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:52:10,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:52:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:11,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:52:11,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:52:11,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:52:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:52:11,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854251854] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:52:11,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:52:11,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 05:52:11,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44376452] [2023-11-29 05:52:11,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:52:11,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:52:11,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:11,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:52:11,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:52:11,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 05:52:11,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 110 transitions, 324 flow. Second operand has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 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) [2023-11-29 05:52:11,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:11,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 05:52:11,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:12,391 INFO L124 PetriNetUnfolderBase]: 4351/8906 cut-off events. [2023-11-29 05:52:12,391 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-11-29 05:52:12,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14974 conditions, 8906 events. 4351/8906 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 77783 event pairs, 2884 based on Foata normal form. 9/7037 useless extension candidates. Maximal degree in co-relation 14762. Up to 5788 conditions per place. [2023-11-29 05:52:12,454 INFO L140 encePairwiseOnDemand]: 96/109 looper letters, 49 selfloop transitions, 37 changer transitions 0/137 dead transitions. [2023-11-29 05:52:12,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 137 transitions, 670 flow [2023-11-29 05:52:12,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:52:12,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 05:52:12,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 635 transitions. [2023-11-29 05:52:12,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5825688073394495 [2023-11-29 05:52:12,458 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 635 transitions. [2023-11-29 05:52:12,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 635 transitions. [2023-11-29 05:52:12,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:12,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 635 transitions. [2023-11-29 05:52:12,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 63.5) internal successors, (635), 10 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:12,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 109.0) internal successors, (1199), 11 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:12,466 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 109.0) internal successors, (1199), 11 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:12,466 INFO L175 Difference]: Start difference. First operand has 105 places, 110 transitions, 324 flow. Second operand 10 states and 635 transitions. [2023-11-29 05:52:12,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 137 transitions, 670 flow [2023-11-29 05:52:12,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 137 transitions, 587 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-29 05:52:12,472 INFO L231 Difference]: Finished difference. Result has 112 places, 137 transitions, 539 flow [2023-11-29 05:52:12,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=539, PETRI_PLACES=112, PETRI_TRANSITIONS=137} [2023-11-29 05:52:12,473 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2023-11-29 05:52:12,473 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 137 transitions, 539 flow [2023-11-29 05:52:12,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 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) [2023-11-29 05:52:12,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:12,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:12,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:52:12,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:12,675 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:52:12,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:12,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1072124498, now seen corresponding path program 1 times [2023-11-29 05:52:12,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:12,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685383035] [2023-11-29 05:52:12,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:12,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:52:12,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:12,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685383035] [2023-11-29 05:52:12,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685383035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:12,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:52:12,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:52:12,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609195330] [2023-11-29 05:52:12,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:12,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:52:12,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:12,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:52:12,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:52:12,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 109 [2023-11-29 05:52:12,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 137 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:12,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:12,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 109 [2023-11-29 05:52:12,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:13,622 INFO L124 PetriNetUnfolderBase]: 4348/8903 cut-off events. [2023-11-29 05:52:13,622 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2023-11-29 05:52:13,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14984 conditions, 8903 events. 4348/8903 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 77553 event pairs, 2884 based on Foata normal form. 3/7029 useless extension candidates. Maximal degree in co-relation 14886. Up to 5802 conditions per place. [2023-11-29 05:52:13,682 INFO L140 encePairwiseOnDemand]: 102/109 looper letters, 68 selfloop transitions, 12 changer transitions 0/134 dead transitions. [2023-11-29 05:52:13,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 134 transitions, 685 flow [2023-11-29 05:52:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:52:13,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:52:13,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-11-29 05:52:13,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7217125382262997 [2023-11-29 05:52:13,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-11-29 05:52:13,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-11-29 05:52:13,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:13,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-11-29 05:52:13,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:13,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:13,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:13,692 INFO L175 Difference]: Start difference. First operand has 112 places, 137 transitions, 539 flow. Second operand 3 states and 236 transitions. [2023-11-29 05:52:13,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 134 transitions, 685 flow [2023-11-29 05:52:13,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 134 transitions, 637 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-29 05:52:13,699 INFO L231 Difference]: Finished difference. Result has 111 places, 134 transitions, 501 flow [2023-11-29 05:52:13,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=501, PETRI_PLACES=111, PETRI_TRANSITIONS=134} [2023-11-29 05:52:13,700 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 9 predicate places. [2023-11-29 05:52:13,700 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 134 transitions, 501 flow [2023-11-29 05:52:13,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:13,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:13,701 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 05:52:13,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:52:13,701 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:52:13,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:13,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2024464128, now seen corresponding path program 2 times [2023-11-29 05:52:13,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:13,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270197240] [2023-11-29 05:52:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:13,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:52:13,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:13,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270197240] [2023-11-29 05:52:13,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270197240] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:13,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850165590] [2023-11-29 05:52:13,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:52:13,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:13,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:52:13,866 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:52:13,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:52:13,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:52:13,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:52:13,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:52:13,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 05:52:13,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:52:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 05:52:14,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850165590] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:52:14,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:52:14,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2023-11-29 05:52:14,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084257027] [2023-11-29 05:52:14,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:52:14,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 05:52:14,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:14,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 05:52:14,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:52:14,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 05:52:14,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 134 transitions, 501 flow. Second operand has 15 states, 15 states have (on average 55.333333333333336) internal successors, (830), 15 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:14,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:14,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 05:52:14,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:15,274 INFO L124 PetriNetUnfolderBase]: 4351/8906 cut-off events. [2023-11-29 05:52:15,274 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2023-11-29 05:52:15,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14975 conditions, 8906 events. 4351/8906 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 77494 event pairs, 2884 based on Foata normal form. 3/7033 useless extension candidates. Maximal degree in co-relation 14873. Up to 5776 conditions per place. [2023-11-29 05:52:15,312 INFO L140 encePairwiseOnDemand]: 96/109 looper letters, 37 selfloop transitions, 49 changer transitions 0/137 dead transitions. [2023-11-29 05:52:15,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 137 transitions, 680 flow [2023-11-29 05:52:15,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:52:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 05:52:15,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 791 transitions. [2023-11-29 05:52:15,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5582215949188426 [2023-11-29 05:52:15,316 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 791 transitions. [2023-11-29 05:52:15,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 791 transitions. [2023-11-29 05:52:15,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:15,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 791 transitions. [2023-11-29 05:52:15,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.84615384615385) internal successors, (791), 13 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:15,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 109.0) internal successors, (1526), 14 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:15,322 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 109.0) internal successors, (1526), 14 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:15,322 INFO L175 Difference]: Start difference. First operand has 111 places, 134 transitions, 501 flow. Second operand 13 states and 791 transitions. [2023-11-29 05:52:15,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 137 transitions, 680 flow [2023-11-29 05:52:15,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 137 transitions, 622 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-29 05:52:15,326 INFO L231 Difference]: Finished difference. Result has 114 places, 137 transitions, 548 flow [2023-11-29 05:52:15,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=548, PETRI_PLACES=114, PETRI_TRANSITIONS=137} [2023-11-29 05:52:15,327 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 12 predicate places. [2023-11-29 05:52:15,327 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 137 transitions, 548 flow [2023-11-29 05:52:15,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 55.333333333333336) internal successors, (830), 15 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:15,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:15,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:15,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:52:15,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:15,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:52:15,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:15,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1243416907, now seen corresponding path program 1 times [2023-11-29 05:52:15,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:15,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413161186] [2023-11-29 05:52:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:15,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:15,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:52:15,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:15,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413161186] [2023-11-29 05:52:15,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413161186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:15,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:52:15,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:52:15,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83015611] [2023-11-29 05:52:15,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:15,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:52:15,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:15,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:52:15,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:52:15,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 05:52:15,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 137 transitions, 548 flow. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:15,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:15,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 05:52:15,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:16,823 INFO L124 PetriNetUnfolderBase]: 8282/15073 cut-off events. [2023-11-29 05:52:16,823 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-11-29 05:52:16,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26546 conditions, 15073 events. 8282/15073 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 128824 event pairs, 2625 based on Foata normal form. 364/12523 useless extension candidates. Maximal degree in co-relation 26301. Up to 5364 conditions per place. [2023-11-29 05:52:16,899 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 136 selfloop transitions, 5 changer transitions 0/186 dead transitions. [2023-11-29 05:52:16,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 186 transitions, 934 flow [2023-11-29 05:52:16,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:52:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:52:16,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-11-29 05:52:16,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7362385321100917 [2023-11-29 05:52:16,901 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-11-29 05:52:16,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-11-29 05:52:16,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:16,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-11-29 05:52:16,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:16,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:16,904 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:16,904 INFO L175 Difference]: Start difference. First operand has 114 places, 137 transitions, 548 flow. Second operand 4 states and 321 transitions. [2023-11-29 05:52:16,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 186 transitions, 934 flow [2023-11-29 05:52:16,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 186 transitions, 758 flow, removed 11 selfloop flow, removed 12 redundant places. [2023-11-29 05:52:16,910 INFO L231 Difference]: Finished difference. Result has 107 places, 139 transitions, 406 flow [2023-11-29 05:52:16,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=406, PETRI_PLACES=107, PETRI_TRANSITIONS=139} [2023-11-29 05:52:16,911 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 5 predicate places. [2023-11-29 05:52:16,911 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 139 transitions, 406 flow [2023-11-29 05:52:16,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:16,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:16,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:16,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:52:16,912 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:52:16,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:16,912 INFO L85 PathProgramCache]: Analyzing trace with hash 108782665, now seen corresponding path program 1 times [2023-11-29 05:52:16,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:16,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184282564] [2023-11-29 05:52:16,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:16,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:52:17,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:17,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184282564] [2023-11-29 05:52:17,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184282564] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:17,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621137828] [2023-11-29 05:52:17,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:17,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:17,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:52:17,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:52:17,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:52:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:17,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:52:17,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:52:17,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:52:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:52:17,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621137828] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:52:17,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:52:17,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2023-11-29 05:52:17,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926717497] [2023-11-29 05:52:17,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:52:17,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:52:17,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:17,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:52:17,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:52:17,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 05:52:17,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 139 transitions, 406 flow. Second operand has 11 states, 11 states have (on average 56.18181818181818) internal successors, (618), 11 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:17,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:17,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 05:52:17,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:18,187 INFO L124 PetriNetUnfolderBase]: 5390/11286 cut-off events. [2023-11-29 05:52:18,188 INFO L125 PetriNetUnfolderBase]: For 1873/2139 co-relation queries the response was YES. [2023-11-29 05:52:18,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20225 conditions, 11286 events. 5390/11286 cut-off events. For 1873/2139 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 103930 event pairs, 3656 based on Foata normal form. 135/9204 useless extension candidates. Maximal degree in co-relation 10275. Up to 7192 conditions per place. [2023-11-29 05:52:18,242 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 45 selfloop transitions, 37 changer transitions 0/133 dead transitions. [2023-11-29 05:52:18,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 133 transitions, 548 flow [2023-11-29 05:52:18,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:52:18,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:52:18,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 446 transitions. [2023-11-29 05:52:18,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5845347313237221 [2023-11-29 05:52:18,245 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 446 transitions. [2023-11-29 05:52:18,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 446 transitions. [2023-11-29 05:52:18,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:18,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 446 transitions. [2023-11-29 05:52:18,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:18,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 109.0) internal successors, (872), 8 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:18,248 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 109.0) internal successors, (872), 8 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:18,248 INFO L175 Difference]: Start difference. First operand has 107 places, 139 transitions, 406 flow. Second operand 7 states and 446 transitions. [2023-11-29 05:52:18,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 133 transitions, 548 flow [2023-11-29 05:52:18,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 133 transitions, 548 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:52:18,274 INFO L231 Difference]: Finished difference. Result has 113 places, 133 transitions, 458 flow [2023-11-29 05:52:18,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=458, PETRI_PLACES=113, PETRI_TRANSITIONS=133} [2023-11-29 05:52:18,275 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 11 predicate places. [2023-11-29 05:52:18,275 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 133 transitions, 458 flow [2023-11-29 05:52:18,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 56.18181818181818) internal successors, (618), 11 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:18,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:18,276 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:18,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:52:18,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:18,478 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:52:18,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:18,478 INFO L85 PathProgramCache]: Analyzing trace with hash -41432151, now seen corresponding path program 2 times [2023-11-29 05:52:18,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:18,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661475415] [2023-11-29 05:52:18,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:18,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 05:52:18,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:18,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661475415] [2023-11-29 05:52:18,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661475415] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:18,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677605383] [2023-11-29 05:52:18,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:52:18,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:18,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:52:18,705 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:52:18,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:52:18,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:52:18,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:52:18,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:52:18,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 05:52:18,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:52:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 05:52:19,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677605383] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:52:19,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:52:19,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-29 05:52:19,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191068139] [2023-11-29 05:52:19,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:52:19,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:52:19,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:19,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:52:19,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:52:19,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 05:52:19,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 133 transitions, 458 flow. Second operand has 18 states, 18 states have (on average 55.611111111111114) internal successors, (1001), 18 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:19,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:19,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 05:52:19,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:20,616 INFO L124 PetriNetUnfolderBase]: 5384/11280 cut-off events. [2023-11-29 05:52:20,616 INFO L125 PetriNetUnfolderBase]: For 1903/2169 co-relation queries the response was YES. [2023-11-29 05:52:20,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20243 conditions, 11280 events. 5384/11280 cut-off events. For 1903/2169 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 103843 event pairs, 3656 based on Foata normal form. 137/9207 useless extension candidates. Maximal degree in co-relation 20081. Up to 7184 conditions per place. [2023-11-29 05:52:20,683 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 43 selfloop transitions, 33 changer transitions 0/127 dead transitions. [2023-11-29 05:52:20,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 127 transitions, 580 flow [2023-11-29 05:52:20,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:52:20,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:52:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 674 transitions. [2023-11-29 05:52:20,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5621351125938282 [2023-11-29 05:52:20,686 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 674 transitions. [2023-11-29 05:52:20,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 674 transitions. [2023-11-29 05:52:20,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:20,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 674 transitions. [2023-11-29 05:52:20,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.27272727272727) internal successors, (674), 11 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:20,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:20,691 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:20,691 INFO L175 Difference]: Start difference. First operand has 113 places, 133 transitions, 458 flow. Second operand 11 states and 674 transitions. [2023-11-29 05:52:20,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 127 transitions, 580 flow [2023-11-29 05:52:20,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 127 transitions, 514 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 05:52:20,702 INFO L231 Difference]: Finished difference. Result has 117 places, 127 transitions, 428 flow [2023-11-29 05:52:20,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=428, PETRI_PLACES=117, PETRI_TRANSITIONS=127} [2023-11-29 05:52:20,702 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 15 predicate places. [2023-11-29 05:52:20,703 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 127 transitions, 428 flow [2023-11-29 05:52:20,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 55.611111111111114) internal successors, (1001), 18 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:20,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:20,703 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:20,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:52:20,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 05:52:20,904 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:52:20,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:20,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1394277129, now seen corresponding path program 3 times [2023-11-29 05:52:20,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:20,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145527664] [2023-11-29 05:52:20,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:20,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-29 05:52:22,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:22,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145527664] [2023-11-29 05:52:22,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145527664] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:22,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270391451] [2023-11-29 05:52:22,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:52:22,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:22,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:52:22,595 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:52:22,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:52:22,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 05:52:22,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:52:22,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 05:52:22,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:22,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 05:52:22,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 05:52:23,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:52:23,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 05:52:23,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:52:23,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 05:52:23,269 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2023-11-29 05:52:23,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 05:52:23,411 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2023-11-29 05:52:23,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2023-11-29 05:52:23,536 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 05:52:23,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 05:52:23,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 05:52:23,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 05:52:23,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 05:52:23,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 05:52:23,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 05:52:23,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 05:52:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-29 05:52:23,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:53:59,702 INFO L349 Elim1Store]: treesize reduction 212, result has 30.5 percent of original size [2023-11-29 05:53:59,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 103 [2023-11-29 05:53:59,804 INFO L349 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-11-29 05:53:59,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 102 treesize of output 122 [2023-11-29 05:53:59,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-29 05:54:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 46 refuted. 2 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-29 05:54:00,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270391451] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:54:00,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:54:00,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 39 [2023-11-29 05:54:00,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449571910] [2023-11-29 05:54:00,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:54:00,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 05:54:00,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:00,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 05:54:00,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1311, Unknown=30, NotChecked=0, Total=1560 [2023-11-29 05:54:04,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:54:08,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:54:12,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:54:16,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:54:20,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:54:24,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:54:24,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 109 [2023-11-29 05:54:24,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 127 transitions, 428 flow. Second operand has 40 states, 40 states have (on average 44.0) internal successors, (1760), 40 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:24,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:24,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 109 [2023-11-29 05:54:24,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:29,875 INFO L124 PetriNetUnfolderBase]: 26562/42645 cut-off events. [2023-11-29 05:54:29,876 INFO L125 PetriNetUnfolderBase]: For 4014/4151 co-relation queries the response was YES. [2023-11-29 05:54:29,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84584 conditions, 42645 events. 26562/42645 cut-off events. For 4014/4151 co-relation queries the response was YES. Maximal size of possible extension queue 1556. Compared 346707 event pairs, 7706 based on Foata normal form. 137/37193 useless extension candidates. Maximal degree in co-relation 84407. Up to 12701 conditions per place. [2023-11-29 05:54:30,085 INFO L140 encePairwiseOnDemand]: 91/109 looper letters, 174 selfloop transitions, 47 changer transitions 0/260 dead transitions. [2023-11-29 05:54:30,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 260 transitions, 1178 flow [2023-11-29 05:54:30,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 05:54:30,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 05:54:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1176 transitions. [2023-11-29 05:54:30,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4690865576386119 [2023-11-29 05:54:30,091 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1176 transitions. [2023-11-29 05:54:30,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1176 transitions. [2023-11-29 05:54:30,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:30,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1176 transitions. [2023-11-29 05:54:30,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 51.130434782608695) internal successors, (1176), 23 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:30,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 109.0) internal successors, (2616), 24 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:30,100 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 109.0) internal successors, (2616), 24 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:30,100 INFO L175 Difference]: Start difference. First operand has 117 places, 127 transitions, 428 flow. Second operand 23 states and 1176 transitions. [2023-11-29 05:54:30,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 260 transitions, 1178 flow [2023-11-29 05:54:30,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 260 transitions, 1112 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-29 05:54:30,131 INFO L231 Difference]: Finished difference. Result has 132 places, 135 transitions, 518 flow [2023-11-29 05:54:30,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=518, PETRI_PLACES=132, PETRI_TRANSITIONS=135} [2023-11-29 05:54:30,132 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 30 predicate places. [2023-11-29 05:54:30,132 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 135 transitions, 518 flow [2023-11-29 05:54:30,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 44.0) internal successors, (1760), 40 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:30,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:30,133 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:30,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:54:30,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 05:54:30,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:54:30,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:30,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1664057357, now seen corresponding path program 1 times [2023-11-29 05:54:30,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:30,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788564615] [2023-11-29 05:54:30,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:30,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-29 05:54:30,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:30,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788564615] [2023-11-29 05:54:30,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788564615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:30,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:30,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:54:30,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633267963] [2023-11-29 05:54:30,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:30,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:54:30,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:30,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:54:30,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:54:30,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 05:54:30,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 135 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:30,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:30,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 05:54:30,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:34,006 INFO L124 PetriNetUnfolderBase]: 21421/39202 cut-off events. [2023-11-29 05:54:34,006 INFO L125 PetriNetUnfolderBase]: For 23074/24840 co-relation queries the response was YES. [2023-11-29 05:54:34,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81940 conditions, 39202 events. 21421/39202 cut-off events. For 23074/24840 co-relation queries the response was YES. Maximal size of possible extension queue 1431. Compared 370920 event pairs, 7205 based on Foata normal form. 1578/34597 useless extension candidates. Maximal degree in co-relation 45682. Up to 13911 conditions per place. [2023-11-29 05:54:34,219 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 151 selfloop transitions, 5 changer transitions 0/202 dead transitions. [2023-11-29 05:54:34,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 202 transitions, 1118 flow [2023-11-29 05:54:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:54:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:54:34,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-11-29 05:54:34,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7362385321100917 [2023-11-29 05:54:34,221 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-11-29 05:54:34,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-11-29 05:54:34,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:34,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-11-29 05:54:34,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:34,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:34,223 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:34,223 INFO L175 Difference]: Start difference. First operand has 132 places, 135 transitions, 518 flow. Second operand 4 states and 321 transitions. [2023-11-29 05:54:34,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 202 transitions, 1118 flow [2023-11-29 05:54:34,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 202 transitions, 1062 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-11-29 05:54:34,258 INFO L231 Difference]: Finished difference. Result has 129 places, 137 transitions, 500 flow [2023-11-29 05:54:34,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=500, PETRI_PLACES=129, PETRI_TRANSITIONS=137} [2023-11-29 05:54:34,259 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 27 predicate places. [2023-11-29 05:54:34,259 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 137 transitions, 500 flow [2023-11-29 05:54:34,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:34,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:34,260 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:34,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:54:34,260 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:54:34,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:34,260 INFO L85 PathProgramCache]: Analyzing trace with hash 272887385, now seen corresponding path program 1 times [2023-11-29 05:54:34,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:34,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232819113] [2023-11-29 05:54:34,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:34,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-29 05:54:35,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:35,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232819113] [2023-11-29 05:54:35,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232819113] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:54:35,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019990075] [2023-11-29 05:54:35,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:35,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:54:35,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:54:35,355 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:54:35,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:54:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:35,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 05:54:35,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:54:35,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 05:54:35,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 05:54:35,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:54:35,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 05:54:35,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:54:35,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 05:54:35,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:54:35,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 05:54:35,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:54:35,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 05:54:35,794 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 05:54:35,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 05:54:35,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 05:54:35,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 05:54:35,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 05:54:35,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 05:54:35,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 05:54:35,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 05:54:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-29 05:54:35,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:54:36,019 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_480 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#3| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_480) c_~o_2~0.base) c_~o_2~0.offset) 4294967296))) is different from false [2023-11-29 05:55:56,196 INFO L349 Elim1Store]: treesize reduction 244, result has 20.0 percent of original size [2023-11-29 05:55:56,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 73 [2023-11-29 05:55:56,206 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:55:56,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-11-29 05:55:56,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-11-29 05:55:56,272 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 13 proven. 20 refuted. 2 times theorem prover too weak. 57 trivial. 13 not checked. [2023-11-29 05:55:56,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019990075] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:55:56,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:55:56,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2023-11-29 05:55:56,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102854070] [2023-11-29 05:55:56,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:55:56,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 05:55:56,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:55:56,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 05:55:56,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=757, Unknown=24, NotChecked=58, Total=992 [2023-11-29 05:55:56,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 109 [2023-11-29 05:55:56,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 137 transitions, 500 flow. Second operand has 32 states, 32 states have (on average 44.09375) internal successors, (1411), 32 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:56,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:55:56,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 109 [2023-11-29 05:55:56,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:56:03,139 INFO L124 PetriNetUnfolderBase]: 31183/47637 cut-off events. [2023-11-29 05:56:03,139 INFO L125 PetriNetUnfolderBase]: For 23561/25453 co-relation queries the response was YES. [2023-11-29 05:56:03,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111047 conditions, 47637 events. 31183/47637 cut-off events. For 23561/25453 co-relation queries the response was YES. Maximal size of possible extension queue 1582. Compared 367495 event pairs, 8869 based on Foata normal form. 1216/44487 useless extension candidates. Maximal degree in co-relation 82934. Up to 16206 conditions per place. [2023-11-29 05:56:03,449 INFO L140 encePairwiseOnDemand]: 91/109 looper letters, 181 selfloop transitions, 47 changer transitions 0/267 dead transitions. [2023-11-29 05:56:03,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 267 transitions, 1310 flow [2023-11-29 05:56:03,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 05:56:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-29 05:56:03,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1344 transitions. [2023-11-29 05:56:03,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4566768603465851 [2023-11-29 05:56:03,453 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1344 transitions. [2023-11-29 05:56:03,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1344 transitions. [2023-11-29 05:56:03,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:56:03,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1344 transitions. [2023-11-29 05:56:03,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 49.77777777777778) internal successors, (1344), 27 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:03,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 109.0) internal successors, (3052), 28 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:03,461 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 109.0) internal successors, (3052), 28 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:03,461 INFO L175 Difference]: Start difference. First operand has 129 places, 137 transitions, 500 flow. Second operand 27 states and 1344 transitions. [2023-11-29 05:56:03,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 267 transitions, 1310 flow [2023-11-29 05:56:03,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 267 transitions, 1310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:56:03,531 INFO L231 Difference]: Finished difference. Result has 157 places, 139 transitions, 616 flow [2023-11-29 05:56:03,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=616, PETRI_PLACES=157, PETRI_TRANSITIONS=139} [2023-11-29 05:56:03,531 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 55 predicate places. [2023-11-29 05:56:03,532 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 139 transitions, 616 flow [2023-11-29 05:56:03,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 44.09375) internal successors, (1411), 32 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:03,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:56:03,532 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:56:03,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:56:03,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 05:56:03,733 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:56:03,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:56:03,733 INFO L85 PathProgramCache]: Analyzing trace with hash -130424532, now seen corresponding path program 1 times [2023-11-29 05:56:03,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:56:03,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353670071] [2023-11-29 05:56:03,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:56:03,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:56:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:03,833 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-29 05:56:03,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:56:03,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353670071] [2023-11-29 05:56:03,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353670071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:56:03,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:56:03,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:56:03,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239514336] [2023-11-29 05:56:03,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:56:03,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:56:03,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:56:03,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:56:03,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:56:03,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 05:56:03,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 139 transitions, 616 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:03,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:56:03,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 05:56:03,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:56:07,444 INFO L124 PetriNetUnfolderBase]: 18969/35654 cut-off events. [2023-11-29 05:56:07,444 INFO L125 PetriNetUnfolderBase]: For 31610/32680 co-relation queries the response was YES. [2023-11-29 05:56:07,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81395 conditions, 35654 events. 18969/35654 cut-off events. For 31610/32680 co-relation queries the response was YES. Maximal size of possible extension queue 1335. Compared 341281 event pairs, 7098 based on Foata normal form. 1023/32175 useless extension candidates. Maximal degree in co-relation 68984. Up to 13470 conditions per place. [2023-11-29 05:56:07,683 INFO L140 encePairwiseOnDemand]: 104/109 looper letters, 134 selfloop transitions, 8 changer transitions 0/188 dead transitions. [2023-11-29 05:56:07,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 188 transitions, 1027 flow [2023-11-29 05:56:07,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:56:07,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:56:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 318 transitions. [2023-11-29 05:56:07,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7293577981651376 [2023-11-29 05:56:07,685 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 318 transitions. [2023-11-29 05:56:07,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 318 transitions. [2023-11-29 05:56:07,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:56:07,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 318 transitions. [2023-11-29 05:56:07,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:07,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:07,687 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:07,687 INFO L175 Difference]: Start difference. First operand has 157 places, 139 transitions, 616 flow. Second operand 4 states and 318 transitions. [2023-11-29 05:56:07,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 188 transitions, 1027 flow [2023-11-29 05:56:07,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 188 transitions, 915 flow, removed 1 selfloop flow, removed 24 redundant places. [2023-11-29 05:56:07,843 INFO L231 Difference]: Finished difference. Result has 136 places, 137 transitions, 503 flow [2023-11-29 05:56:07,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=503, PETRI_PLACES=136, PETRI_TRANSITIONS=137} [2023-11-29 05:56:07,844 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 34 predicate places. [2023-11-29 05:56:07,844 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 137 transitions, 503 flow [2023-11-29 05:56:07,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:07,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:56:07,844 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:56:07,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:56:07,844 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:56:07,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:56:07,845 INFO L85 PathProgramCache]: Analyzing trace with hash -130425557, now seen corresponding path program 1 times [2023-11-29 05:56:07,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:56:07,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404276301] [2023-11-29 05:56:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:56:07,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:56:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 05:56:09,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:56:09,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404276301] [2023-11-29 05:56:09,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404276301] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:56:09,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274064157] [2023-11-29 05:56:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:56:09,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:56:09,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:56:09,326 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:56:09,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:56:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:09,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 87 conjunts are in the unsatisfiable core [2023-11-29 05:56:09,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:56:09,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 05:56:09,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:09,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:09,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:56:09,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:09,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:56:09,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:56:09,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:09,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:09,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:56:09,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:09,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:56:09,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:09,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:56:09,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:09,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:56:09,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:56:09,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 05:56:09,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:09,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:56:09,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:56:09,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:09,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:09,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:09,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:56:09,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 05:56:09,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 05:56:09,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 05:56:09,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 05:56:09,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 05:56:10,010 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 05:56:10,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 05:56:10,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 05:56:10,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 05:56:10,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 05:56:10,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 05:56:10,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 05:56:10,592 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 05:56:10,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 05:56:10,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 05:56:10,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 05:56:10,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 05:56:10,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 05:56:10,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 05:56:10,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 05:56:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 05:56:10,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:56:12,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:56:12,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 59 treesize of output 80 [2023-11-29 05:56:12,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:56:12,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-11-29 05:56:12,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-11-29 05:56:12,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-11-29 05:56:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 05:56:12,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274064157] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:56:12,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:56:12,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25, 17] total 55 [2023-11-29 05:56:12,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298005012] [2023-11-29 05:56:12,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:56:12,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-29 05:56:12,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:56:12,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-29 05:56:12,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=2834, Unknown=9, NotChecked=0, Total=3192 [2023-11-29 05:56:13,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 109 [2023-11-29 05:56:13,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 137 transitions, 503 flow. Second operand has 57 states, 57 states have (on average 41.92982456140351) internal successors, (2390), 57 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:13,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:56:13,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 109 [2023-11-29 05:56:13,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:56:24,708 INFO L124 PetriNetUnfolderBase]: 31031/45899 cut-off events. [2023-11-29 05:56:24,708 INFO L125 PetriNetUnfolderBase]: For 26856/28742 co-relation queries the response was YES. [2023-11-29 05:56:24,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112142 conditions, 45899 events. 31031/45899 cut-off events. For 26856/28742 co-relation queries the response was YES. Maximal size of possible extension queue 1538. Compared 337843 event pairs, 7022 based on Foata normal form. 955/43408 useless extension candidates. Maximal degree in co-relation 91061. Up to 12733 conditions per place. [2023-11-29 05:56:25,025 INFO L140 encePairwiseOnDemand]: 89/109 looper letters, 302 selfloop transitions, 80 changer transitions 0/419 dead transitions. [2023-11-29 05:56:25,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 419 transitions, 2121 flow [2023-11-29 05:56:25,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 05:56:25,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-11-29 05:56:25,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2245 transitions. [2023-11-29 05:56:25,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382197930899863 [2023-11-29 05:56:25,029 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2245 transitions. [2023-11-29 05:56:25,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2245 transitions. [2023-11-29 05:56:25,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:56:25,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2245 transitions. [2023-11-29 05:56:25,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 47.765957446808514) internal successors, (2245), 47 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:25,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 109.0) internal successors, (5232), 48 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:25,045 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 109.0) internal successors, (5232), 48 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:25,045 INFO L175 Difference]: Start difference. First operand has 136 places, 137 transitions, 503 flow. Second operand 47 states and 2245 transitions. [2023-11-29 05:56:25,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 419 transitions, 2121 flow [2023-11-29 05:56:25,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 419 transitions, 2108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:56:25,283 INFO L231 Difference]: Finished difference. Result has 186 places, 178 transitions, 901 flow [2023-11-29 05:56:25,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=901, PETRI_PLACES=186, PETRI_TRANSITIONS=178} [2023-11-29 05:56:25,283 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 84 predicate places. [2023-11-29 05:56:25,284 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 178 transitions, 901 flow [2023-11-29 05:56:25,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 41.92982456140351) internal successors, (2390), 57 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:25,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:56:25,285 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:56:25,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 05:56:25,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:56:25,486 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:56:25,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:56:25,486 INFO L85 PathProgramCache]: Analyzing trace with hash 46171658, now seen corresponding path program 1 times [2023-11-29 05:56:25,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:56:25,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553940851] [2023-11-29 05:56:25,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:56:25,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:56:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 05:56:26,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:56:26,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553940851] [2023-11-29 05:56:26,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553940851] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:56:26,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086763103] [2023-11-29 05:56:26,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:56:26,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:56:26,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:56:26,570 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:56:26,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:56:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:26,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 05:56:26,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:56:26,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 05:56:26,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:26,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 05:56:26,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:26,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 05:56:26,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:26,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 05:56:26,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:26,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 05:56:26,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 05:56:26,930 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 05:56:26,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:56:27,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2023-11-29 05:56:27,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2023-11-29 05:56:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-29 05:56:27,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086763103] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:56:27,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:56:27,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 24 [2023-11-29 05:56:27,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573526583] [2023-11-29 05:56:27,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:56:27,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 05:56:27,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:56:27,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 05:56:27,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2023-11-29 05:56:27,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 109 [2023-11-29 05:56:27,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 178 transitions, 901 flow. Second operand has 25 states, 25 states have (on average 52.72) internal successors, (1318), 25 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:27,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:56:27,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 109 [2023-11-29 05:56:27,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:56:36,020 INFO L124 PetriNetUnfolderBase]: 33816/67310 cut-off events. [2023-11-29 05:56:36,020 INFO L125 PetriNetUnfolderBase]: For 94949/97386 co-relation queries the response was YES. [2023-11-29 05:56:36,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156985 conditions, 67310 events. 33816/67310 cut-off events. For 94949/97386 co-relation queries the response was YES. Maximal size of possible extension queue 2179. Compared 717286 event pairs, 8076 based on Foata normal form. 1387/60899 useless extension candidates. Maximal degree in co-relation 142401. Up to 15232 conditions per place. [2023-11-29 05:56:36,567 INFO L140 encePairwiseOnDemand]: 91/109 looper letters, 194 selfloop transitions, 83 changer transitions 0/330 dead transitions. [2023-11-29 05:56:36,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 330 transitions, 2282 flow [2023-11-29 05:56:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:56:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 05:56:36,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1049 transitions. [2023-11-29 05:56:36,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5661090124123044 [2023-11-29 05:56:36,569 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1049 transitions. [2023-11-29 05:56:36,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1049 transitions. [2023-11-29 05:56:36,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:56:36,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1049 transitions. [2023-11-29 05:56:36,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 61.705882352941174) internal successors, (1049), 17 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:36,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 109.0) internal successors, (1962), 18 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:36,575 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 109.0) internal successors, (1962), 18 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:36,575 INFO L175 Difference]: Start difference. First operand has 186 places, 178 transitions, 901 flow. Second operand 17 states and 1049 transitions. [2023-11-29 05:56:36,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 330 transitions, 2282 flow [2023-11-29 05:56:36,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 330 transitions, 2171 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-11-29 05:56:36,891 INFO L231 Difference]: Finished difference. Result has 199 places, 186 transitions, 1101 flow [2023-11-29 05:56:36,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1101, PETRI_PLACES=199, PETRI_TRANSITIONS=186} [2023-11-29 05:56:36,892 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 97 predicate places. [2023-11-29 05:56:36,892 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 186 transitions, 1101 flow [2023-11-29 05:56:36,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 52.72) internal successors, (1318), 25 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:36,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:56:36,893 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:56:36,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:56:37,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 05:56:37,093 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:56:37,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:56:37,094 INFO L85 PathProgramCache]: Analyzing trace with hash 251776156, now seen corresponding path program 1 times [2023-11-29 05:56:37,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:56:37,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209419945] [2023-11-29 05:56:37,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:56:37,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:56:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 05:56:38,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:56:38,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209419945] [2023-11-29 05:56:38,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209419945] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:56:38,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443828377] [2023-11-29 05:56:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:56:38,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:56:38,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:56:38,602 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:56:38,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:56:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:38,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-29 05:56:38,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:56:38,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 05:56:38,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:56:38,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:56:38,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:38,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:56:38,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:38,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:38,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:56:38,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:56:38,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 05:56:38,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:56:38,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:38,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:56:38,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:38,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:56:38,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:38,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:56:38,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:38,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:38,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:39,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:39,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:56:39,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:39,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:39,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:39,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:56:39,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:39,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:56:39,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:39,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:56:39,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 05:56:39,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:39,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 05:56:39,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:39,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 05:56:39,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:39,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 05:56:39,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:56:39,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 05:56:39,418 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 05:56:39,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 05:56:39,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 05:56:39,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 05:56:39,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 05:56:39,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 05:56:39,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 05:56:39,560 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 05:56:39,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 05:56:39,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 05:56:39,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 05:56:39,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 05:56:39,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 05:56:39,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 05:56:39,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 05:56:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-29 05:56:39,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:56:39,809 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_843 (Array Int Int))) (< (select (select (store |c_#memory_int#3| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_843) c_~o_0~0.base) c_~o_0~0.offset) 2147483648)) is different from false [2023-11-29 05:58:31,641 INFO L349 Elim1Store]: treesize reduction 244, result has 20.0 percent of original size [2023-11-29 05:58:31,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 74 [2023-11-29 05:58:31,656 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:58:31,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 117 [2023-11-29 05:58:31,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-29 05:58:31,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-29 05:58:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 12 proven. 33 refuted. 3 times theorem prover too weak. 44 trivial. 13 not checked. [2023-11-29 05:58:31,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443828377] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:31,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:31,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 18] total 46 [2023-11-29 05:58:31,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111009236] [2023-11-29 05:58:31,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:31,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 05:58:31,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:31,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 05:58:31,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1898, Unknown=28, NotChecked=90, Total=2256 [2023-11-29 05:58:31,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 109 [2023-11-29 05:58:31,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 186 transitions, 1101 flow. Second operand has 48 states, 48 states have (on average 42.0) internal successors, (2016), 48 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:31,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:31,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 109 [2023-11-29 05:58:31,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:48,217 INFO L124 PetriNetUnfolderBase]: 66974/99466 cut-off events. [2023-11-29 05:58:48,217 INFO L125 PetriNetUnfolderBase]: For 117996/125794 co-relation queries the response was YES. [2023-11-29 05:58:48,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274413 conditions, 99466 events. 66974/99466 cut-off events. For 117996/125794 co-relation queries the response was YES. Maximal size of possible extension queue 2819. Compared 789774 event pairs, 17987 based on Foata normal form. 4740/97426 useless extension candidates. Maximal degree in co-relation 229985. Up to 32493 conditions per place. [2023-11-29 05:58:49,191 INFO L140 encePairwiseOnDemand]: 87/109 looper letters, 372 selfloop transitions, 90 changer transitions 0/502 dead transitions. [2023-11-29 05:58:49,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 502 transitions, 3373 flow [2023-11-29 05:58:49,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 05:58:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-29 05:58:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1611 transitions. [2023-11-29 05:58:49,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46186926605504586 [2023-11-29 05:58:49,194 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1611 transitions. [2023-11-29 05:58:49,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1611 transitions. [2023-11-29 05:58:49,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:49,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1611 transitions. [2023-11-29 05:58:49,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 50.34375) internal successors, (1611), 32 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:49,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 109.0) internal successors, (3597), 33 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:49,202 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 109.0) internal successors, (3597), 33 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:49,203 INFO L175 Difference]: Start difference. First operand has 199 places, 186 transitions, 1101 flow. Second operand 32 states and 1611 transitions. [2023-11-29 05:58:49,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 502 transitions, 3373 flow [2023-11-29 05:58:50,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 502 transitions, 3211 flow, removed 10 selfloop flow, removed 11 redundant places. [2023-11-29 05:58:50,715 INFO L231 Difference]: Finished difference. Result has 224 places, 193 transitions, 1200 flow [2023-11-29 05:58:50,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1200, PETRI_PLACES=224, PETRI_TRANSITIONS=193} [2023-11-29 05:58:50,716 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 122 predicate places. [2023-11-29 05:58:50,716 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 193 transitions, 1200 flow [2023-11-29 05:58:50,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 42.0) internal successors, (2016), 48 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:50,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:50,717 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:50,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 05:58:50,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:58:50,918 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:58:50,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:50,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1327513758, now seen corresponding path program 1 times [2023-11-29 05:58:50,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:50,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514239420] [2023-11-29 05:58:50,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:50,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-29 05:58:50,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:50,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514239420] [2023-11-29 05:58:50,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514239420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:58:50,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:58:50,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:58:50,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42818407] [2023-11-29 05:58:50,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:50,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:58:50,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:50,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:58:50,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:58:51,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 05:58:51,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 193 transitions, 1200 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:51,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:51,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 05:58:51,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:04,039 INFO L124 PetriNetUnfolderBase]: 54334/101372 cut-off events. [2023-11-29 05:59:04,039 INFO L125 PetriNetUnfolderBase]: For 226445/234365 co-relation queries the response was YES. [2023-11-29 05:59:04,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279527 conditions, 101372 events. 54334/101372 cut-off events. For 226445/234365 co-relation queries the response was YES. Maximal size of possible extension queue 3295. Compared 1080836 event pairs, 20963 based on Foata normal form. 5786/95659 useless extension candidates. Maximal degree in co-relation 262528. Up to 38136 conditions per place. [2023-11-29 05:59:05,050 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 232 selfloop transitions, 5 changer transitions 0/290 dead transitions. [2023-11-29 05:59:05,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 290 transitions, 2316 flow [2023-11-29 05:59:05,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:59:05,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:59:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-11-29 05:59:05,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7362385321100917 [2023-11-29 05:59:05,051 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-11-29 05:59:05,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-11-29 05:59:05,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:05,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-11-29 05:59:05,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:05,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:05,053 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:05,053 INFO L175 Difference]: Start difference. First operand has 224 places, 193 transitions, 1200 flow. Second operand 4 states and 321 transitions. [2023-11-29 05:59:05,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 290 transitions, 2316 flow [2023-11-29 05:59:06,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 290 transitions, 2160 flow, removed 9 selfloop flow, removed 22 redundant places. [2023-11-29 05:59:06,704 INFO L231 Difference]: Finished difference. Result has 207 places, 195 transitions, 1118 flow [2023-11-29 05:59:06,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1118, PETRI_PLACES=207, PETRI_TRANSITIONS=195} [2023-11-29 05:59:06,705 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 105 predicate places. [2023-11-29 05:59:06,705 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 195 transitions, 1118 flow [2023-11-29 05:59:06,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:06,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:06,705 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:59:06,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:59:06,705 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:59:06,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:06,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1431290769, now seen corresponding path program 1 times [2023-11-29 05:59:06,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:06,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494067355] [2023-11-29 05:59:06,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:06,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 05:59:07,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:07,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494067355] [2023-11-29 05:59:07,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494067355] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:59:07,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114815310] [2023-11-29 05:59:07,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:07,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:59:07,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:59:07,497 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:59:07,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:59:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:07,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 05:59:07,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:59:07,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 05:59:07,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:59:07,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 05:59:07,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:59:07,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 05:59:07,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:59:07,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 05:59:07,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:59:07,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 05:59:07,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 05:59:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 05:59:07,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:59:08,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-29 05:59:08,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 50 [2023-11-29 05:59:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-29 05:59:08,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114815310] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:59:08,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:59:08,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 24 [2023-11-29 05:59:08,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570234751] [2023-11-29 05:59:08,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:59:08,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 05:59:08,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:08,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 05:59:08,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2023-11-29 05:59:08,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 109 [2023-11-29 05:59:08,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 195 transitions, 1118 flow. Second operand has 25 states, 25 states have (on average 50.8) internal successors, (1270), 25 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:08,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:08,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 109 [2023-11-29 05:59:08,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:22,295 INFO L124 PetriNetUnfolderBase]: 52224/94866 cut-off events. [2023-11-29 05:59:22,295 INFO L125 PetriNetUnfolderBase]: For 190878/198365 co-relation queries the response was YES. [2023-11-29 05:59:22,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261957 conditions, 94866 events. 52224/94866 cut-off events. For 190878/198365 co-relation queries the response was YES. Maximal size of possible extension queue 2907. Compared 968465 event pairs, 14295 based on Foata normal form. 4621/92107 useless extension candidates. Maximal degree in co-relation 248241. Up to 25879 conditions per place. [2023-11-29 05:59:23,439 INFO L140 encePairwiseOnDemand]: 91/109 looper letters, 228 selfloop transitions, 83 changer transitions 0/364 dead transitions. [2023-11-29 05:59:23,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 364 transitions, 2691 flow [2023-11-29 05:59:23,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:59:23,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 05:59:23,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1015 transitions. [2023-11-29 05:59:23,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477603885590934 [2023-11-29 05:59:23,442 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1015 transitions. [2023-11-29 05:59:23,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1015 transitions. [2023-11-29 05:59:23,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:23,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1015 transitions. [2023-11-29 05:59:23,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.705882352941174) internal successors, (1015), 17 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:23,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 109.0) internal successors, (1962), 18 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:23,446 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 109.0) internal successors, (1962), 18 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:23,446 INFO L175 Difference]: Start difference. First operand has 207 places, 195 transitions, 1118 flow. Second operand 17 states and 1015 transitions. [2023-11-29 05:59:23,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 364 transitions, 2691 flow [2023-11-29 05:59:24,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 364 transitions, 2691 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:59:24,328 INFO L231 Difference]: Finished difference. Result has 225 places, 197 transitions, 1309 flow [2023-11-29 05:59:24,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1309, PETRI_PLACES=225, PETRI_TRANSITIONS=197} [2023-11-29 05:59:24,329 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 123 predicate places. [2023-11-29 05:59:24,329 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 197 transitions, 1309 flow [2023-11-29 05:59:24,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 50.8) internal successors, (1270), 25 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:24,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:24,330 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:59:24,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 05:59:24,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 05:59:24,530 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:59:24,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:24,530 INFO L85 PathProgramCache]: Analyzing trace with hash 162444465, now seen corresponding path program 1 times [2023-11-29 05:59:24,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:24,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578393113] [2023-11-29 05:59:24,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:24,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-29 05:59:24,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:24,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578393113] [2023-11-29 05:59:24,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578393113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:59:24,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:59:24,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:59:24,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520047484] [2023-11-29 05:59:24,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:59:24,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:59:24,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:24,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:59:24,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:59:24,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 05:59:24,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 197 transitions, 1309 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:24,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:24,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 05:59:24,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:38,826 INFO L124 PetriNetUnfolderBase]: 53065/95513 cut-off events. [2023-11-29 05:59:38,826 INFO L125 PetriNetUnfolderBase]: For 189849/195285 co-relation queries the response was YES. [2023-11-29 05:59:39,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284465 conditions, 95513 events. 53065/95513 cut-off events. For 189849/195285 co-relation queries the response was YES. Maximal size of possible extension queue 2947. Compared 971642 event pairs, 20485 based on Foata normal form. 4692/95095 useless extension candidates. Maximal degree in co-relation 271232. Up to 37005 conditions per place. [2023-11-29 05:59:39,965 INFO L140 encePairwiseOnDemand]: 104/109 looper letters, 200 selfloop transitions, 10 changer transitions 0/263 dead transitions. [2023-11-29 05:59:39,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 263 transitions, 2070 flow [2023-11-29 05:59:39,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:59:39,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:59:39,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2023-11-29 05:59:39,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7247706422018348 [2023-11-29 05:59:39,967 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2023-11-29 05:59:39,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2023-11-29 05:59:39,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:39,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2023-11-29 05:59:39,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:39,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:39,969 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:39,969 INFO L175 Difference]: Start difference. First operand has 225 places, 197 transitions, 1309 flow. Second operand 4 states and 316 transitions. [2023-11-29 05:59:39,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 263 transitions, 2070 flow [2023-11-29 05:59:43,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 263 transitions, 1887 flow, removed 1 selfloop flow, removed 15 redundant places. [2023-11-29 05:59:43,799 INFO L231 Difference]: Finished difference. Result has 212 places, 195 transitions, 1155 flow [2023-11-29 05:59:43,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1155, PETRI_PLACES=212, PETRI_TRANSITIONS=195} [2023-11-29 05:59:43,800 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 110 predicate places. [2023-11-29 05:59:43,800 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 195 transitions, 1155 flow [2023-11-29 05:59:43,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:43,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:59:43,800 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:59:43,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:59:43,800 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 05:59:43,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:59:43,801 INFO L85 PathProgramCache]: Analyzing trace with hash -784872627, now seen corresponding path program 1 times [2023-11-29 05:59:43,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:59:43,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049806919] [2023-11-29 05:59:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:59:43,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:59:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:59:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-29 05:59:43,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:59:43,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049806919] [2023-11-29 05:59:43,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049806919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:59:43,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:59:43,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:59:43,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952889960] [2023-11-29 05:59:43,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:59:43,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:59:43,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:59:43,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:59:43,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:59:43,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 109 [2023-11-29 05:59:43,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 195 transitions, 1155 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:43,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:59:43,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 109 [2023-11-29 05:59:43,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:56,531 INFO L124 PetriNetUnfolderBase]: 41525/77299 cut-off events. [2023-11-29 05:59:56,532 INFO L125 PetriNetUnfolderBase]: For 153702/158283 co-relation queries the response was YES. [2023-11-29 05:59:57,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237865 conditions, 77299 events. 41525/77299 cut-off events. For 153702/158283 co-relation queries the response was YES. Maximal size of possible extension queue 2297. Compared 790674 event pairs, 17757 based on Foata normal form. 3903/78702 useless extension candidates. Maximal degree in co-relation 224247. Up to 30881 conditions per place. [2023-11-29 05:59:57,665 INFO L140 encePairwiseOnDemand]: 104/109 looper letters, 206 selfloop transitions, 5 changer transitions 0/268 dead transitions. [2023-11-29 05:59:57,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 268 transitions, 1921 flow [2023-11-29 05:59:57,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:59:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:59:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2023-11-29 05:59:57,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7821100917431193 [2023-11-29 05:59:57,666 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 341 transitions. [2023-11-29 05:59:57,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 341 transitions. [2023-11-29 05:59:57,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:57,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 341 transitions. [2023-11-29 05:59:57,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:57,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:57,668 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:57,668 INFO L175 Difference]: Start difference. First operand has 212 places, 195 transitions, 1155 flow. Second operand 4 states and 341 transitions. [2023-11-29 05:59:57,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 268 transitions, 1921 flow [2023-11-29 06:00:02,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 268 transitions, 1909 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:00:02,342 INFO L231 Difference]: Finished difference. Result has 214 places, 195 transitions, 1161 flow [2023-11-29 06:00:02,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1161, PETRI_PLACES=214, PETRI_TRANSITIONS=195} [2023-11-29 06:00:02,343 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 112 predicate places. [2023-11-29 06:00:02,344 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 195 transitions, 1161 flow [2023-11-29 06:00:02,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:00:02,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:02,344 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:00:02,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 06:00:02,344 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 06:00:02,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:02,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1420341004, now seen corresponding path program 1 times [2023-11-29 06:00:02,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:02,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648214064] [2023-11-29 06:00:02,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:02,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 06:00:03,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:03,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648214064] [2023-11-29 06:00:03,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648214064] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:00:03,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423381256] [2023-11-29 06:00:03,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:03,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:00:03,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:00:03,677 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:00:03,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:00:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:03,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 83 conjunts are in the unsatisfiable core [2023-11-29 06:00:03,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:00:03,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-29 06:00:03,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 06:00:03,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 06:00:03,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:00:03,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 06:00:03,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:00:03,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 06:00:03,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:00:03,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:00:03,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 06:00:03,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 06:00:03,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:00:03,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:00:03,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 06:00:03,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 06:00:03,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:00:03,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 06:00:03,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:00:03,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:03,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:00:04,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:04,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 06:00:04,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:04,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 06:00:04,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:04,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:00:04,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:04,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:00:04,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:04,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 06:00:04,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:00:04,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 06:00:04,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 06:00:04,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 06:00:04,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:00:04,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 06:00:04,444 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 06:00:04,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 06:00:04,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 06:00:04,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 06:00:04,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 06:00:04,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 06:00:04,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 06:00:04,624 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 06:00:04,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 06:00:04,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 06:00:04,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 06:00:04,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 06:00:05,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 06:00:05,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 06:00:05,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 06:00:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 06:00:05,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:01:53,419 INFO L349 Elim1Store]: treesize reduction 99, result has 39.3 percent of original size [2023-11-29 06:01:53,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 79 [2023-11-29 06:01:53,431 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:01:53,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-11-29 06:01:53,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-11-29 06:01:53,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2023-11-29 06:01:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 6 proven. 45 refuted. 10 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 06:01:53,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423381256] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:01:53,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:01:53,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24, 17] total 54 [2023-11-29 06:01:53,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347076208] [2023-11-29 06:01:53,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:01:53,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-11-29 06:01:53,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:53,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-11-29 06:01:53,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=2761, Unknown=33, NotChecked=0, Total=3080 [2023-11-29 06:01:57,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:02:01,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:02:05,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:02:09,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:02:13,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:02:17,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:02:21,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:02:25,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:02:29,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:02:33,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:02:38,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:02:42,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:02:46,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:02:50,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:02:54,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:02:54,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 109 [2023-11-29 06:02:54,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 195 transitions, 1161 flow. Second operand has 56 states, 56 states have (on average 40.125) internal successors, (2247), 56 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:54,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:02:54,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 109 [2023-11-29 06:02:54,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:20,292 INFO L124 PetriNetUnfolderBase]: 94163/135645 cut-off events. [2023-11-29 06:03:20,293 INFO L125 PetriNetUnfolderBase]: For 360771/374442 co-relation queries the response was YES. [2023-11-29 06:03:21,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428883 conditions, 135645 events. 94163/135645 cut-off events. For 360771/374442 co-relation queries the response was YES. Maximal size of possible extension queue 3685. Compared 1056454 event pairs, 16537 based on Foata normal form. 8383/138030 useless extension candidates. Maximal degree in co-relation 405874. Up to 30353 conditions per place. [2023-11-29 06:03:22,086 INFO L140 encePairwiseOnDemand]: 86/109 looper letters, 460 selfloop transitions, 90 changer transitions 0/590 dead transitions. [2023-11-29 06:03:22,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 590 transitions, 4547 flow [2023-11-29 06:03:22,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 06:03:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-29 06:03:22,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1559 transitions. [2023-11-29 06:03:22,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469610091743119 [2023-11-29 06:03:22,091 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1559 transitions. [2023-11-29 06:03:22,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1559 transitions. [2023-11-29 06:03:22,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:22,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1559 transitions. [2023-11-29 06:03:22,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 48.71875) internal successors, (1559), 32 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:22,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 109.0) internal successors, (3597), 33 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:22,102 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 109.0) internal successors, (3597), 33 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:22,103 INFO L175 Difference]: Start difference. First operand has 214 places, 195 transitions, 1161 flow. Second operand 32 states and 1559 transitions. [2023-11-29 06:03:22,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 590 transitions, 4547 flow [2023-11-29 06:03:24,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 590 transitions, 4487 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:03:24,434 INFO L231 Difference]: Finished difference. Result has 249 places, 200 transitions, 1392 flow [2023-11-29 06:03:24,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1392, PETRI_PLACES=249, PETRI_TRANSITIONS=200} [2023-11-29 06:03:24,435 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 147 predicate places. [2023-11-29 06:03:24,435 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 200 transitions, 1392 flow [2023-11-29 06:03:24,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 40.125) internal successors, (2247), 56 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:24,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:24,436 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:24,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 06:03:24,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:24,636 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 06:03:24,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:24,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1796747630, now seen corresponding path program 1 times [2023-11-29 06:03:24,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:24,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908186187] [2023-11-29 06:03:24,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:24,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 06:03:25,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:25,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908186187] [2023-11-29 06:03:25,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908186187] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:03:25,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425480578] [2023-11-29 06:03:25,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:25,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:25,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:25,653 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:03:25,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:03:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:25,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 06:03:25,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:03:25,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:03:25,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:03:25,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 06:03:25,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:03:25,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 06:03:26,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:03:26,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 06:03:26,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:03:26,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 06:03:26,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 06:03:26,186 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 06:03:26,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:03:26,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2023-11-29 06:03:26,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2023-11-29 06:03:27,003 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-29 06:03:27,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425480578] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:03:27,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:03:27,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 9] total 33 [2023-11-29 06:03:27,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398696980] [2023-11-29 06:03:27,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:03:27,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 06:03:27,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:27,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 06:03:27,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 06:03:27,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 109 [2023-11-29 06:03:27,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 200 transitions, 1392 flow. Second operand has 34 states, 34 states have (on average 52.61764705882353) internal successors, (1789), 34 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:27,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:27,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 109 [2023-11-29 06:03:27,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:55,879 INFO L124 PetriNetUnfolderBase]: 82105/163079 cut-off events. [2023-11-29 06:03:55,879 INFO L125 PetriNetUnfolderBase]: For 452237/464563 co-relation queries the response was YES. [2023-11-29 06:03:57,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474165 conditions, 163079 events. 82105/163079 cut-off events. For 452237/464563 co-relation queries the response was YES. Maximal size of possible extension queue 4406. Compared 1918765 event pairs, 21783 based on Foata normal form. 7326/156345 useless extension candidates. Maximal degree in co-relation 450108. Up to 39231 conditions per place. [2023-11-29 06:03:58,382 INFO L140 encePairwiseOnDemand]: 91/109 looper letters, 267 selfloop transitions, 83 changer transitions 0/410 dead transitions. [2023-11-29 06:03:58,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 410 transitions, 3606 flow [2023-11-29 06:03:58,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:03:58,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 06:03:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1047 transitions. [2023-11-29 06:03:58,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650296815974096 [2023-11-29 06:03:58,385 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1047 transitions. [2023-11-29 06:03:58,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1047 transitions. [2023-11-29 06:03:58,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:58,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1047 transitions. [2023-11-29 06:03:58,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 61.588235294117645) internal successors, (1047), 17 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:58,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 109.0) internal successors, (1962), 18 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:58,390 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 109.0) internal successors, (1962), 18 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:58,390 INFO L175 Difference]: Start difference. First operand has 249 places, 200 transitions, 1392 flow. Second operand 17 states and 1047 transitions. [2023-11-29 06:03:58,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 410 transitions, 3606 flow [2023-11-29 06:04:02,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 410 transitions, 3359 flow, removed 15 selfloop flow, removed 25 redundant places. [2023-11-29 06:04:02,790 INFO L231 Difference]: Finished difference. Result has 243 places, 208 transitions, 1456 flow [2023-11-29 06:04:02,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1456, PETRI_PLACES=243, PETRI_TRANSITIONS=208} [2023-11-29 06:04:02,791 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 141 predicate places. [2023-11-29 06:04:02,791 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 208 transitions, 1456 flow [2023-11-29 06:04:02,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 52.61764705882353) internal successors, (1789), 34 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:02,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:04:02,791 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:02,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 06:04:02,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 06:04:02,992 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-11-29 06:04:02,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:02,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1080899316, now seen corresponding path program 1 times [2023-11-29 06:04:02,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:02,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944565535] [2023-11-29 06:04:02,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:02,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 06:04:04,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:04,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944565535] [2023-11-29 06:04:04,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944565535] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:04:04,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876753474] [2023-11-29 06:04:04,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:04,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:04,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:04:04,124 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:04:04,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0460576-5553-4b4d-a407-8b66d246c3e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 06:04:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:04,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 85 conjunts are in the unsatisfiable core [2023-11-29 06:04:04,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:04:04,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 06:04:04,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 06:04:04,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:04:04,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 06:04:04,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 06:04:04,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:04:04,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 06:04:04,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:04:04,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:04:04,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 06:04:04,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:04:04,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 06:04:04,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 06:04:04,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:04:04,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 06:04:04,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:04:04,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:04:04,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 06:04:04,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 06:04:04,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:04:04,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:04:04,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 06:04:04,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:04:04,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 06:04:04,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:04:04,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 06:04:04,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 06:04:04,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 06:04:04,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:04:04,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 06:04:04,994 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-29 06:04:04,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-29 06:04:05,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:04:05,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:04:05,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:04:05,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:04:05,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:04:05,313 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-29 06:04:05,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-29 06:04:05,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:04:05,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:04:05,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:04:05,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:04:05,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:04:05,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 06:04:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 06:04:05,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:04:06,026 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1409 (Array Int Int))) (< (select (select (store |c_#memory_int#3| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1409) c_~o_0~0.base) c_~o_0~0.offset) 2147483648)) is different from false