./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 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_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/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_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/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_2d5eeb2f-8f58-402b-aaed-b80176881a77/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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:49:54,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:49:54,748 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 02:49:54,753 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:49:54,753 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:49:54,778 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:49:54,778 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:49:54,779 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:49:54,779 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:49:54,780 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:49:54,781 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:49:54,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:49:54,782 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:49:54,782 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:49:54,783 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:49:54,783 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:49:54,784 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:49:54,784 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:49:54,785 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:49:54,785 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:49:54,785 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:49:54,786 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:49:54,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:49:54,787 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:49:54,787 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 02:49:54,788 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:49:54,788 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:49:54,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:49:54,789 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:49:54,789 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:49:54,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:49:54,790 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:49:54,791 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:49:54,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:49:54,791 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:49:54,792 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:49:54,792 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:49:54,792 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:49:54,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:49:54,792 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:49:54,793 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:49:54,793 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:49:54,793 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:49:54,793 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:49:54,793 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_2d5eeb2f-8f58-402b-aaed-b80176881a77/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2023-11-29 02:49:55,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:49:55,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:49:55,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:49:55,035 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:49:55,035 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:49:55,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-29 02:49:57,795 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:49:57,960 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:49:57,960 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-29 02:49:57,969 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/data/c0a66f935/cc34c6cb7e5f459eb5f408df476e164c/FLAG3a3e892be [2023-11-29 02:49:57,983 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/data/c0a66f935/cc34c6cb7e5f459eb5f408df476e164c [2023-11-29 02:49:57,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:49:57,988 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:49:57,989 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:49:57,989 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:49:57,994 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:49:57,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:49:57" (1/1) ... [2023-11-29 02:49:57,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b54bbbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:57, skipping insertion in model container [2023-11-29 02:49:57,996 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:49:57" (1/1) ... [2023-11-29 02:49:58,025 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:49:58,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:49:58,230 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:49:58,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:49:58,279 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:49:58,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:58 WrapperNode [2023-11-29 02:49:58,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:49:58,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:49:58,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:49:58,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:49:58,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:58" (1/1) ... [2023-11-29 02:49:58,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:58" (1/1) ... [2023-11-29 02:49:58,324 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 195 [2023-11-29 02:49:58,324 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:49:58,325 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:49:58,325 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:49:58,325 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:49:58,337 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:58" (1/1) ... [2023-11-29 02:49:58,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:58" (1/1) ... [2023-11-29 02:49:58,341 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:58" (1/1) ... [2023-11-29 02:49:58,360 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 15, 2, 2, 2]. 65 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, 3, 1, 1, 1]. [2023-11-29 02:49:58,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:58" (1/1) ... [2023-11-29 02:49:58,360 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:58" (1/1) ... [2023-11-29 02:49:58,371 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:58" (1/1) ... [2023-11-29 02:49:58,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:58" (1/1) ... [2023-11-29 02:49:58,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:58" (1/1) ... [2023-11-29 02:49:58,380 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:58" (1/1) ... [2023-11-29 02:49:58,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:49:58,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:49:58,386 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:49:58,386 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:49:58,387 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:58" (1/1) ... [2023-11-29 02:49:58,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:49:58,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:49:58,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:49:58,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:49:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:49:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:49:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 02:49:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 02:49:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 02:49:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 02:49:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 02:49:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 02:49:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 02:49:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 02:49:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 02:49:58,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 02:49:58,453 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 02:49:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 02:49:58,453 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 02:49:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 02:49:58,454 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 02:49:58,454 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 02:49:58,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:49:58,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:49:58,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:49:58,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 02:49:58,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 02:49:58,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 02:49:58,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:49:58,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:49:58,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:49:58,457 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 02:49:58,570 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:49:58,572 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:49:58,978 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:49:59,323 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:49:59,323 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-29 02:49:59,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:49:59 BoogieIcfgContainer [2023-11-29 02:49:59,324 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:49:59,326 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:49:59,326 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:49:59,330 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:49:59,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:49:57" (1/3) ... [2023-11-29 02:49:59,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfd611f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:49:59, skipping insertion in model container [2023-11-29 02:49:59,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:49:58" (2/3) ... [2023-11-29 02:49:59,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfd611f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:49:59, skipping insertion in model container [2023-11-29 02:49:59,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:49:59" (3/3) ... [2023-11-29 02:49:59,332 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2023-11-29 02:49:59,341 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 02:49:59,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:49:59,352 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-29 02:49:59,352 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 02:49:59,421 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 02:49:59,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 91 transitions, 203 flow [2023-11-29 02:49:59,497 INFO L124 PetriNetUnfolderBase]: 15/88 cut-off events. [2023-11-29 02:49:59,497 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 02:49:59,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 88 events. 15/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 262 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2023-11-29 02:49:59,502 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 91 transitions, 203 flow [2023-11-29 02:49:59,506 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 86 transitions, 187 flow [2023-11-29 02:49:59,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:49:59,523 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;@666312ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:49:59,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-29 02:49:59,527 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 02:49:59,528 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 02:49:59,528 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 02:49:59,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:49:59,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 02:49:59,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 02:49:59,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:49:59,534 INFO L85 PathProgramCache]: Analyzing trace with hash 824211, now seen corresponding path program 1 times [2023-11-29 02:49:59,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:49:59,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110286031] [2023-11-29 02:49:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:49:59,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:49:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:49:59,806 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 02:49:59,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:49:59,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110286031] [2023-11-29 02:49:59,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110286031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:49:59,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:49:59,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:49:59,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965534961] [2023-11-29 02:49:59,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:49:59,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:49:59,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:49:59,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:49:59,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:49:59,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2023-11-29 02:49:59,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 02:49:59,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:49:59,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2023-11-29 02:49:59,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:50:00,838 INFO L124 PetriNetUnfolderBase]: 4173/6870 cut-off events. [2023-11-29 02:50:00,838 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2023-11-29 02:50:00,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12439 conditions, 6870 events. 4173/6870 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 43544 event pairs, 2653 based on Foata normal form. 3/4813 useless extension candidates. Maximal degree in co-relation 11334. Up to 5339 conditions per place. [2023-11-29 02:50:00,911 INFO L140 encePairwiseOnDemand]: 75/91 looper letters, 55 selfloop transitions, 10 changer transitions 0/95 dead transitions. [2023-11-29 02:50:00,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 95 transitions, 335 flow [2023-11-29 02:50:00,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:50:00,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:50:00,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2023-11-29 02:50:00,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2023-11-29 02:50:00,926 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 203 transitions. [2023-11-29 02:50:00,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 203 transitions. [2023-11-29 02:50:00,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:50:00,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 203 transitions. [2023-11-29 02:50:00,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 02:50:00,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 02:50:00,939 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 02:50:00,941 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 187 flow. Second operand 4 states and 203 transitions. [2023-11-29 02:50:00,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 95 transitions, 335 flow [2023-11-29 02:50:00,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 95 transitions, 326 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 02:50:00,954 INFO L231 Difference]: Finished difference. Result has 82 places, 95 transitions, 266 flow [2023-11-29 02:50:00,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=82, PETRI_TRANSITIONS=95} [2023-11-29 02:50:00,959 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2023-11-29 02:50:00,960 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 95 transitions, 266 flow [2023-11-29 02:50:00,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 02:50:00,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:50:00,960 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 02:50:00,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:50:00,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 02:50:00,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:50:00,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1214952909, now seen corresponding path program 1 times [2023-11-29 02:50:00,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:50:00,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117819752] [2023-11-29 02:50:00,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:50:00,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:50:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:50:01,078 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 02:50:01,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:50:01,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117819752] [2023-11-29 02:50:01,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117819752] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:50:01,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109925551] [2023-11-29 02:50:01,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:50:01,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:50:01,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:50:01,084 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:50:01,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:50:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:50:01,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:50:01,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:50:01,246 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 02:50:01,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:50:01,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109925551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:50:01,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:50:01,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 02:50:01,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256585377] [2023-11-29 02:50:01,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:50:01,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:50:01,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:50:01,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:50:01,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:50:01,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2023-11-29 02:50:01,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 95 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 02:50:01,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:50:01,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2023-11-29 02:50:01,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:50:01,939 INFO L124 PetriNetUnfolderBase]: 4173/6867 cut-off events. [2023-11-29 02:50:01,939 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-29 02:50:01,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12384 conditions, 6867 events. 4173/6867 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 43543 event pairs, 2653 based on Foata normal form. 3/4815 useless extension candidates. Maximal degree in co-relation 12311. Up to 5324 conditions per place. [2023-11-29 02:50:01,983 INFO L140 encePairwiseOnDemand]: 78/91 looper letters, 45 selfloop transitions, 17 changer transitions 0/92 dead transitions. [2023-11-29 02:50:01,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 92 transitions, 378 flow [2023-11-29 02:50:01,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:50:01,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:50:01,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 263 transitions. [2023-11-29 02:50:01,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4816849816849817 [2023-11-29 02:50:01,987 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 263 transitions. [2023-11-29 02:50:01,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 263 transitions. [2023-11-29 02:50:01,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:50:01,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 263 transitions. [2023-11-29 02:50:01,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 0 states have call successors, (0), 0 states 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 02:50:01,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 02:50:01,992 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 02:50:01,992 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 266 flow. Second operand 6 states and 263 transitions. [2023-11-29 02:50:01,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 92 transitions, 378 flow [2023-11-29 02:50:01,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 92 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 02:50:01,996 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 288 flow [2023-11-29 02:50:01,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2023-11-29 02:50:01,997 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 3 predicate places. [2023-11-29 02:50:01,997 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 288 flow [2023-11-29 02:50:01,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 02:50:01,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:50:01,998 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 02:50:02,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:50:02,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:50:02,198 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 02:50:02,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:50:02,199 INFO L85 PathProgramCache]: Analyzing trace with hash 991166271, now seen corresponding path program 1 times [2023-11-29 02:50:02,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:50:02,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058006931] [2023-11-29 02:50:02,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:50:02,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:50:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:50:02,282 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 02:50:02,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:50:02,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058006931] [2023-11-29 02:50:02,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058006931] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:50:02,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944607721] [2023-11-29 02:50:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:50:02,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:50:02,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:50:02,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:50:02,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:50:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:50:02,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:50:02,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:50:02,438 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 02:50:02,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:50:02,487 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 02:50:02,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944607721] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:50:02,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:50:02,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 02:50:02,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527054772] [2023-11-29 02:50:02,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:50:02,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:50:02,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:50:02,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:50:02,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:50:02,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2023-11-29 02:50:02,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 288 flow. Second operand has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 12 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 02:50:02,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:50:02,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2023-11-29 02:50:02,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:50:03,490 INFO L124 PetriNetUnfolderBase]: 4182/6903 cut-off events. [2023-11-29 02:50:03,490 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-11-29 02:50:03,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12525 conditions, 6903 events. 4182/6903 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 43939 event pairs, 2653 based on Foata normal form. 9/4857 useless extension candidates. Maximal degree in co-relation 12313. Up to 5339 conditions per place. [2023-11-29 02:50:03,545 INFO L140 encePairwiseOnDemand]: 78/91 looper letters, 52 selfloop transitions, 37 changer transitions 0/119 dead transitions. [2023-11-29 02:50:03,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 119 transitions, 640 flow [2023-11-29 02:50:03,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:50:03,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:50:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 428 transitions. [2023-11-29 02:50:03,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4703296703296703 [2023-11-29 02:50:03,549 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 428 transitions. [2023-11-29 02:50:03,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 428 transitions. [2023-11-29 02:50:03,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:50:03,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 428 transitions. [2023-11-29 02:50:03,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 42.8) internal successors, (428), 10 states have internal predecessors, (428), 0 states have call successors, (0), 0 states 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 02:50:03,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 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 02:50:03,556 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 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 02:50:03,556 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 288 flow. Second operand 10 states and 428 transitions. [2023-11-29 02:50:03,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 119 transitions, 640 flow [2023-11-29 02:50:03,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 557 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-29 02:50:03,563 INFO L231 Difference]: Finished difference. Result has 91 places, 119 transitions, 503 flow [2023-11-29 02:50:03,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=503, PETRI_PLACES=91, PETRI_TRANSITIONS=119} [2023-11-29 02:50:03,564 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 10 predicate places. [2023-11-29 02:50:03,564 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 119 transitions, 503 flow [2023-11-29 02:50:03,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 12 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 02:50:03,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:50:03,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:50:03,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:50:03,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:50:03,766 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 02:50:03,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:50:03,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1581287754, now seen corresponding path program 1 times [2023-11-29 02:50:03,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:50:03,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764649688] [2023-11-29 02:50:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:50:03,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:50:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:50:03,837 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 02:50:03,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:50:03,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764649688] [2023-11-29 02:50:03,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764649688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:50:03,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:50:03,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:50:03,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646712518] [2023-11-29 02:50:03,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:50:03,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:50:03,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:50:03,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:50:03,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:50:03,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 91 [2023-11-29 02:50:03,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 119 transitions, 503 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 02:50:03,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:50:03,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 91 [2023-11-29 02:50:03,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:50:04,951 INFO L124 PetriNetUnfolderBase]: 7387/11136 cut-off events. [2023-11-29 02:50:04,951 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2023-11-29 02:50:04,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21164 conditions, 11136 events. 7387/11136 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 65242 event pairs, 3613 based on Foata normal form. 146/8108 useless extension candidates. Maximal degree in co-relation 21066. Up to 7218 conditions per place. [2023-11-29 02:50:05,043 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 141 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2023-11-29 02:50:05,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 175 transitions, 911 flow [2023-11-29 02:50:05,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:50:05,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:50:05,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-29 02:50:05,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7005494505494505 [2023-11-29 02:50:05,049 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-29 02:50:05,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-29 02:50:05,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:50:05,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-29 02:50:05,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 02:50:05,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 02:50:05,053 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 02:50:05,053 INFO L175 Difference]: Start difference. First operand has 91 places, 119 transitions, 503 flow. Second operand 4 states and 255 transitions. [2023-11-29 02:50:05,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 175 transitions, 911 flow [2023-11-29 02:50:05,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 175 transitions, 874 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-29 02:50:05,062 INFO L231 Difference]: Finished difference. Result has 94 places, 122 transitions, 495 flow [2023-11-29 02:50:05,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=495, PETRI_PLACES=94, PETRI_TRANSITIONS=122} [2023-11-29 02:50:05,063 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2023-11-29 02:50:05,064 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 122 transitions, 495 flow [2023-11-29 02:50:05,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 02:50:05,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:50:05,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:50:05,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:50:05,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 02:50:05,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:50:05,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1775247485, now seen corresponding path program 1 times [2023-11-29 02:50:05,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:50:05,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931843942] [2023-11-29 02:50:05,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:50:05,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:50:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:50:05,194 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 02:50:05,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:50:05,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931843942] [2023-11-29 02:50:05,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931843942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:50:05,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:50:05,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:50:05,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653022395] [2023-11-29 02:50:05,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:50:05,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:50:05,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:50:05,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:50:05,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:50:05,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-29 02:50:05,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 122 transitions, 495 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 02:50:05,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:50:05,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-29 02:50:05,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:50:06,999 INFO L124 PetriNetUnfolderBase]: 13891/22893 cut-off events. [2023-11-29 02:50:06,999 INFO L125 PetriNetUnfolderBase]: For 2780/2780 co-relation queries the response was YES. [2023-11-29 02:50:07,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43690 conditions, 22893 events. 13891/22893 cut-off events. For 2780/2780 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 172626 event pairs, 8506 based on Foata normal form. 230/17108 useless extension candidates. Maximal degree in co-relation 43566. Up to 8887 conditions per place. [2023-11-29 02:50:07,141 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 137 selfloop transitions, 11 changer transitions 0/180 dead transitions. [2023-11-29 02:50:07,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 180 transitions, 990 flow [2023-11-29 02:50:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:50:07,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:50:07,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 325 transitions. [2023-11-29 02:50:07,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2023-11-29 02:50:07,144 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 325 transitions. [2023-11-29 02:50:07,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 325 transitions. [2023-11-29 02:50:07,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:50:07,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 325 transitions. [2023-11-29 02:50:07,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 54.166666666666664) internal successors, (325), 6 states have internal predecessors, (325), 0 states have call successors, (0), 0 states 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 02:50:07,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 02:50:07,149 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 02:50:07,149 INFO L175 Difference]: Start difference. First operand has 94 places, 122 transitions, 495 flow. Second operand 6 states and 325 transitions. [2023-11-29 02:50:07,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 180 transitions, 990 flow [2023-11-29 02:50:07,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 180 transitions, 985 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:50:07,159 INFO L231 Difference]: Finished difference. Result has 101 places, 125 transitions, 550 flow [2023-11-29 02:50:07,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=550, PETRI_PLACES=101, PETRI_TRANSITIONS=125} [2023-11-29 02:50:07,161 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 20 predicate places. [2023-11-29 02:50:07,161 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 125 transitions, 550 flow [2023-11-29 02:50:07,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 02:50:07,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:50:07,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:50:07,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:50:07,162 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 02:50:07,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:50:07,162 INFO L85 PathProgramCache]: Analyzing trace with hash 505037858, now seen corresponding path program 1 times [2023-11-29 02:50:07,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:50:07,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223402960] [2023-11-29 02:50:07,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:50:07,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:50:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:50:07,237 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 02:50:07,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:50:07,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223402960] [2023-11-29 02:50:07,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223402960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:50:07,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:50:07,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:50:07,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944652630] [2023-11-29 02:50:07,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:50:07,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:50:07,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:50:07,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:50:07,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:50:07,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 91 [2023-11-29 02:50:07,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 125 transitions, 550 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 02:50:07,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:50:07,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 91 [2023-11-29 02:50:07,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:50:09,696 INFO L124 PetriNetUnfolderBase]: 22828/33916 cut-off events. [2023-11-29 02:50:09,696 INFO L125 PetriNetUnfolderBase]: For 4107/4467 co-relation queries the response was YES. [2023-11-29 02:50:09,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68209 conditions, 33916 events. 22828/33916 cut-off events. For 4107/4467 co-relation queries the response was YES. Maximal size of possible extension queue 1048. Compared 223258 event pairs, 10962 based on Foata normal form. 464/26531 useless extension candidates. Maximal degree in co-relation 68080. Up to 21780 conditions per place. [2023-11-29 02:50:09,860 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 149 selfloop transitions, 4 changer transitions 0/185 dead transitions. [2023-11-29 02:50:09,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 185 transitions, 1006 flow [2023-11-29 02:50:09,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:50:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:50:09,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-29 02:50:09,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7005494505494505 [2023-11-29 02:50:09,862 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-29 02:50:09,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-29 02:50:09,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:50:09,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-29 02:50:09,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 02:50:09,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 02:50:09,864 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 02:50:09,864 INFO L175 Difference]: Start difference. First operand has 101 places, 125 transitions, 550 flow. Second operand 4 states and 255 transitions. [2023-11-29 02:50:09,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 185 transitions, 1006 flow [2023-11-29 02:50:09,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 185 transitions, 1003 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 02:50:09,870 INFO L231 Difference]: Finished difference. Result has 105 places, 128 transitions, 576 flow [2023-11-29 02:50:09,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=576, PETRI_PLACES=105, PETRI_TRANSITIONS=128} [2023-11-29 02:50:09,871 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 24 predicate places. [2023-11-29 02:50:09,871 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 128 transitions, 576 flow [2023-11-29 02:50:09,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 02:50:09,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:50:09,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:50:09,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:50:09,873 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 02:50:09,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:50:09,873 INFO L85 PathProgramCache]: Analyzing trace with hash 801903704, now seen corresponding path program 1 times [2023-11-29 02:50:09,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:50:09,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355037577] [2023-11-29 02:50:09,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:50:09,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:50:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:50:09,966 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 02:50:09,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:50:09,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355037577] [2023-11-29 02:50:09,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355037577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:50:09,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:50:09,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:50:09,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489004677] [2023-11-29 02:50:09,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:50:09,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:50:09,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:50:09,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:50:09,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:50:09,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-29 02:50:09,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 128 transitions, 576 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 02:50:09,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:50:09,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-29 02:50:09,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:50:15,268 INFO L124 PetriNetUnfolderBase]: 40704/67820 cut-off events. [2023-11-29 02:50:15,268 INFO L125 PetriNetUnfolderBase]: For 18951/19023 co-relation queries the response was YES. [2023-11-29 02:50:15,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138653 conditions, 67820 events. 40704/67820 cut-off events. For 18951/19023 co-relation queries the response was YES. Maximal size of possible extension queue 2553. Compared 590888 event pairs, 24964 based on Foata normal form. 656/55304 useless extension candidates. Maximal degree in co-relation 138437. Up to 25508 conditions per place. [2023-11-29 02:50:15,713 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 166 selfloop transitions, 7 changer transitions 0/206 dead transitions. [2023-11-29 02:50:15,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 206 transitions, 1268 flow [2023-11-29 02:50:15,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:50:15,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:50:15,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2023-11-29 02:50:15,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6461538461538462 [2023-11-29 02:50:15,716 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 294 transitions. [2023-11-29 02:50:15,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 294 transitions. [2023-11-29 02:50:15,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:50:15,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 294 transitions. [2023-11-29 02:50:15,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 58.8) internal successors, (294), 5 states have internal predecessors, (294), 0 states have call successors, (0), 0 states 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 02:50:15,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 02:50:15,719 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 02:50:15,719 INFO L175 Difference]: Start difference. First operand has 105 places, 128 transitions, 576 flow. Second operand 5 states and 294 transitions. [2023-11-29 02:50:15,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 206 transitions, 1268 flow [2023-11-29 02:50:15,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 206 transitions, 1263 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:50:15,752 INFO L231 Difference]: Finished difference. Result has 111 places, 132 transitions, 644 flow [2023-11-29 02:50:15,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=644, PETRI_PLACES=111, PETRI_TRANSITIONS=132} [2023-11-29 02:50:15,753 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 30 predicate places. [2023-11-29 02:50:15,753 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 132 transitions, 644 flow [2023-11-29 02:50:15,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 02:50:15,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:50:15,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:50:15,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:50:15,754 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 02:50:15,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:50:15,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1523662934, now seen corresponding path program 1 times [2023-11-29 02:50:15,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:50:15,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150589839] [2023-11-29 02:50:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:50:15,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:50:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:50:15,853 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 02:50:15,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:50:15,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150589839] [2023-11-29 02:50:15,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150589839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:50:15,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:50:15,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:50:15,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540773319] [2023-11-29 02:50:15,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:50:15,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:50:15,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:50:15,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:50:15,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:50:15,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-29 02:50:15,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 132 transitions, 644 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 02:50:15,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:50:15,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-29 02:50:15,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:50:26,650 INFO L124 PetriNetUnfolderBase]: 85076/139956 cut-off events. [2023-11-29 02:50:26,650 INFO L125 PetriNetUnfolderBase]: For 26148/26292 co-relation queries the response was YES. [2023-11-29 02:50:27,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280234 conditions, 139956 events. 85076/139956 cut-off events. For 26148/26292 co-relation queries the response was YES. Maximal size of possible extension queue 5007. Compared 1307368 event pairs, 52104 based on Foata normal form. 984/111142 useless extension candidates. Maximal degree in co-relation 280016. Up to 54048 conditions per place. [2023-11-29 02:50:27,458 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 129 selfloop transitions, 13 changer transitions 0/177 dead transitions. [2023-11-29 02:50:27,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 177 transitions, 1048 flow [2023-11-29 02:50:27,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:50:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:50:27,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 282 transitions. [2023-11-29 02:50:27,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197802197802198 [2023-11-29 02:50:27,460 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 282 transitions. [2023-11-29 02:50:27,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 282 transitions. [2023-11-29 02:50:27,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:50:27,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 282 transitions. [2023-11-29 02:50:27,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 02:50:27,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 02:50:27,463 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 02:50:27,463 INFO L175 Difference]: Start difference. First operand has 111 places, 132 transitions, 644 flow. Second operand 5 states and 282 transitions. [2023-11-29 02:50:27,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 177 transitions, 1048 flow [2023-11-29 02:50:27,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 177 transitions, 1046 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-29 02:50:27,536 INFO L231 Difference]: Finished difference. Result has 117 places, 133 transitions, 688 flow [2023-11-29 02:50:27,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=688, PETRI_PLACES=117, PETRI_TRANSITIONS=133} [2023-11-29 02:50:27,537 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 36 predicate places. [2023-11-29 02:50:27,537 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 133 transitions, 688 flow [2023-11-29 02:50:27,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 02:50:27,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:50:27,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:50:27,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:50:27,538 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 02:50:27,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:50:27,538 INFO L85 PathProgramCache]: Analyzing trace with hash 11090212, now seen corresponding path program 1 times [2023-11-29 02:50:27,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:50:27,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183418653] [2023-11-29 02:50:27,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:50:27,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:50:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:50:27,633 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 02:50:27,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:50:27,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183418653] [2023-11-29 02:50:27,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183418653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:50:27,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:50:27,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:50:27,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042336995] [2023-11-29 02:50:27,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:50:27,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:50:27,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:50:27,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:50:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:50:27,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-29 02:50:27,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 133 transitions, 688 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 02:50:27,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:50:27,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-29 02:50:27,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:50:38,550 INFO L124 PetriNetUnfolderBase]: 82344/135868 cut-off events. [2023-11-29 02:50:38,551 INFO L125 PetriNetUnfolderBase]: For 34503/34719 co-relation queries the response was YES. [2023-11-29 02:50:38,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276969 conditions, 135868 events. 82344/135868 cut-off events. For 34503/34719 co-relation queries the response was YES. Maximal size of possible extension queue 5003. Compared 1272689 event pairs, 50040 based on Foata normal form. 604/109662 useless extension candidates. Maximal degree in co-relation 276744. Up to 51023 conditions per place. [2023-11-29 02:50:39,452 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 185 selfloop transitions, 14 changer transitions 0/234 dead transitions. [2023-11-29 02:50:39,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 234 transitions, 1485 flow [2023-11-29 02:50:39,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:50:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 02:50:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 430 transitions. [2023-11-29 02:50:39,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5906593406593407 [2023-11-29 02:50:39,455 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 430 transitions. [2023-11-29 02:50:39,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 430 transitions. [2023-11-29 02:50:39,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:50:39,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 430 transitions. [2023-11-29 02:50:39,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 53.75) internal successors, (430), 8 states have internal predecessors, (430), 0 states have call successors, (0), 0 states 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 02:50:39,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states 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 02:50:39,459 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states 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 02:50:39,459 INFO L175 Difference]: Start difference. First operand has 117 places, 133 transitions, 688 flow. Second operand 8 states and 430 transitions. [2023-11-29 02:50:39,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 234 transitions, 1485 flow [2023-11-29 02:50:39,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 234 transitions, 1460 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:50:39,551 INFO L231 Difference]: Finished difference. Result has 127 places, 141 transitions, 805 flow [2023-11-29 02:50:39,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=805, PETRI_PLACES=127, PETRI_TRANSITIONS=141} [2023-11-29 02:50:39,552 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 46 predicate places. [2023-11-29 02:50:39,552 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 141 transitions, 805 flow [2023-11-29 02:50:39,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 02:50:39,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:50:39,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:50:39,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:50:39,553 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 02:50:39,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:50:39,554 INFO L85 PathProgramCache]: Analyzing trace with hash 37204300, now seen corresponding path program 1 times [2023-11-29 02:50:39,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:50:39,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130817791] [2023-11-29 02:50:39,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:50:39,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:50:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:50:39,627 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 02:50:39,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:50:39,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130817791] [2023-11-29 02:50:39,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130817791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:50:39,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:50:39,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:50:39,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535997134] [2023-11-29 02:50:39,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:50:39,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:50:39,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:50:39,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:50:39,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:50:39,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 91 [2023-11-29 02:50:39,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 141 transitions, 805 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 02:50:39,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:50:39,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 91 [2023-11-29 02:50:39,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:50:56,822 INFO L124 PetriNetUnfolderBase]: 135596/199748 cut-off events. [2023-11-29 02:50:56,822 INFO L125 PetriNetUnfolderBase]: For 46313/51673 co-relation queries the response was YES. [2023-11-29 02:50:57,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421639 conditions, 199748 events. 135596/199748 cut-off events. For 46313/51673 co-relation queries the response was YES. Maximal size of possible extension queue 5375. Compared 1588871 event pairs, 65256 based on Foata normal form. 2512/166288 useless extension candidates. Maximal degree in co-relation 421410. Up to 129203 conditions per place. [2023-11-29 02:50:58,410 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 165 selfloop transitions, 4 changer transitions 0/205 dead transitions. [2023-11-29 02:50:58,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 205 transitions, 1323 flow [2023-11-29 02:50:58,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:50:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:50:58,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-29 02:50:58,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7005494505494505 [2023-11-29 02:50:58,412 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-29 02:50:58,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-29 02:50:58,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:50:58,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-29 02:50:58,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 02:50:58,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 02:50:58,414 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 02:50:58,414 INFO L175 Difference]: Start difference. First operand has 127 places, 141 transitions, 805 flow. Second operand 4 states and 255 transitions. [2023-11-29 02:50:58,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 205 transitions, 1323 flow [2023-11-29 02:50:58,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 205 transitions, 1320 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:50:58,556 INFO L231 Difference]: Finished difference. Result has 131 places, 144 transitions, 831 flow [2023-11-29 02:50:58,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=831, PETRI_PLACES=131, PETRI_TRANSITIONS=144} [2023-11-29 02:50:58,557 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 50 predicate places. [2023-11-29 02:50:58,557 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 144 transitions, 831 flow [2023-11-29 02:50:58,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 02:50:58,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:50:58,558 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:50:58,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:50:58,558 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 02:50:58,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:50:58,558 INFO L85 PathProgramCache]: Analyzing trace with hash 884583152, now seen corresponding path program 1 times [2023-11-29 02:50:58,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:50:58,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820400442] [2023-11-29 02:50:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:50:58,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:50:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:50:58,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:50:58,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:50:58,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820400442] [2023-11-29 02:50:58,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820400442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:50:58,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:50:58,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:50:58,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796842671] [2023-11-29 02:50:58,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:50:58,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:50:58,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:50:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:50:58,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:50:58,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 91 [2023-11-29 02:50:58,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 144 transitions, 831 flow. Second operand has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 02:50:58,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:50:58,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 91 [2023-11-29 02:50:58,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:51:10,988 INFO L124 PetriNetUnfolderBase]: 90536/144146 cut-off events. [2023-11-29 02:51:10,988 INFO L125 PetriNetUnfolderBase]: For 42610/43210 co-relation queries the response was YES. [2023-11-29 02:51:11,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318367 conditions, 144146 events. 90536/144146 cut-off events. For 42610/43210 co-relation queries the response was YES. Maximal size of possible extension queue 4247. Compared 1264503 event pairs, 53736 based on Foata normal form. 0/127158 useless extension candidates. Maximal degree in co-relation 318135. Up to 74795 conditions per place. [2023-11-29 02:51:11,961 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 184 selfloop transitions, 14 changer transitions 0/236 dead transitions. [2023-11-29 02:51:11,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 236 transitions, 1574 flow [2023-11-29 02:51:11,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:51:11,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:51:11,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 357 transitions. [2023-11-29 02:51:11,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2023-11-29 02:51:11,964 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 357 transitions. [2023-11-29 02:51:11,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 357 transitions. [2023-11-29 02:51:11,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:51:11,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 357 transitions. [2023-11-29 02:51:11,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 02:51:11,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 02:51:11,966 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 02:51:11,966 INFO L175 Difference]: Start difference. First operand has 131 places, 144 transitions, 831 flow. Second operand 6 states and 357 transitions. [2023-11-29 02:51:11,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 236 transitions, 1574 flow [2023-11-29 02:51:13,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 236 transitions, 1567 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:51:13,711 INFO L231 Difference]: Finished difference. Result has 137 places, 146 transitions, 883 flow [2023-11-29 02:51:13,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=883, PETRI_PLACES=137, PETRI_TRANSITIONS=146} [2023-11-29 02:51:13,711 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 56 predicate places. [2023-11-29 02:51:13,711 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 146 transitions, 883 flow [2023-11-29 02:51:13,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 02:51:13,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:51:13,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:51:13,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:51:13,712 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 02:51:13,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:51:13,712 INFO L85 PathProgramCache]: Analyzing trace with hash 55731894, now seen corresponding path program 1 times [2023-11-29 02:51:13,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:51:13,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122471888] [2023-11-29 02:51:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:51:13,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:51:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:51:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:51:13,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:51:13,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122471888] [2023-11-29 02:51:13,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122471888] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:51:13,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479385083] [2023-11-29 02:51:13,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:51:13,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:51:13,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:51:13,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:51:13,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:51:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:51:13,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:51:13,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:51:14,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:51:14,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:51:14,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479385083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:51:14,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:51:14,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-29 02:51:14,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345380120] [2023-11-29 02:51:14,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:51:14,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:51:14,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:51:14,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:51:14,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:51:14,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 91 [2023-11-29 02:51:14,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 146 transitions, 883 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 02:51:14,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:51:14,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 91 [2023-11-29 02:51:14,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:51:25,859 INFO L124 PetriNetUnfolderBase]: 83936/137444 cut-off events. [2023-11-29 02:51:25,859 INFO L125 PetriNetUnfolderBase]: For 54444/54732 co-relation queries the response was YES. [2023-11-29 02:51:26,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299887 conditions, 137444 events. 83936/137444 cut-off events. For 54444/54732 co-relation queries the response was YES. Maximal size of possible extension queue 3904. Compared 1241758 event pairs, 53736 based on Foata normal form. 1616/124160 useless extension candidates. Maximal degree in co-relation 299651. Up to 104730 conditions per place. [2023-11-29 02:51:27,041 INFO L140 encePairwiseOnDemand]: 89/91 looper letters, 104 selfloop transitions, 1 changer transitions 0/144 dead transitions. [2023-11-29 02:51:27,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 144 transitions, 1079 flow [2023-11-29 02:51:27,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:51:27,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:51:27,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2023-11-29 02:51:27,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6043956043956044 [2023-11-29 02:51:27,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2023-11-29 02:51:27,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2023-11-29 02:51:27,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:51:27,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2023-11-29 02:51:27,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 02:51:27,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 02:51:27,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 02:51:27,045 INFO L175 Difference]: Start difference. First operand has 137 places, 146 transitions, 883 flow. Second operand 3 states and 165 transitions. [2023-11-29 02:51:27,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 144 transitions, 1079 flow [2023-11-29 02:51:27,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 144 transitions, 1055 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 02:51:27,736 INFO L231 Difference]: Finished difference. Result has 132 places, 144 transitions, 847 flow [2023-11-29 02:51:27,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=847, PETRI_PLACES=132, PETRI_TRANSITIONS=144} [2023-11-29 02:51:27,737 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 51 predicate places. [2023-11-29 02:51:27,737 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 144 transitions, 847 flow [2023-11-29 02:51:27,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 02:51:27,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:51:27,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:51:27,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:51:27,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 02:51:27,938 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 02:51:27,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:51:27,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1153365971, now seen corresponding path program 1 times [2023-11-29 02:51:27,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:51:27,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409763920] [2023-11-29 02:51:27,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:51:27,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:51:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:51:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:51:28,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:51:28,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409763920] [2023-11-29 02:51:28,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409763920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:51:28,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:51:28,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:51:28,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469250433] [2023-11-29 02:51:28,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:51:28,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:51:28,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:51:28,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:51:28,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:51:28,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-29 02:51:28,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 144 transitions, 847 flow. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 02:51:28,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:51:28,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-29 02:51:28,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:51:40,902 INFO L124 PetriNetUnfolderBase]: 92102/146152 cut-off events. [2023-11-29 02:51:40,902 INFO L125 PetriNetUnfolderBase]: For 48919/49259 co-relation queries the response was YES. [2023-11-29 02:51:41,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323407 conditions, 146152 events. 92102/146152 cut-off events. For 48919/49259 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1272552 event pairs, 59324 based on Foata normal form. 812/131332 useless extension candidates. Maximal degree in co-relation 323372. Up to 59772 conditions per place. [2023-11-29 02:51:41,936 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 131 selfloop transitions, 24 changer transitions 0/192 dead transitions. [2023-11-29 02:51:41,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 192 transitions, 1305 flow [2023-11-29 02:51:41,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:51:41,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:51:41,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 282 transitions. [2023-11-29 02:51:41,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197802197802198 [2023-11-29 02:51:41,938 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 282 transitions. [2023-11-29 02:51:41,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 282 transitions. [2023-11-29 02:51:41,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:51:41,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 282 transitions. [2023-11-29 02:51:41,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 02:51:41,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 02:51:41,941 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 02:51:41,941 INFO L175 Difference]: Start difference. First operand has 132 places, 144 transitions, 847 flow. Second operand 5 states and 282 transitions. [2023-11-29 02:51:41,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 192 transitions, 1305 flow [2023-11-29 02:51:42,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 192 transitions, 1304 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:51:42,787 INFO L231 Difference]: Finished difference. Result has 137 places, 145 transitions, 925 flow [2023-11-29 02:51:42,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=925, PETRI_PLACES=137, PETRI_TRANSITIONS=145} [2023-11-29 02:51:42,788 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 56 predicate places. [2023-11-29 02:51:42,788 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 145 transitions, 925 flow [2023-11-29 02:51:42,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 02:51:42,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:51:42,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:51:42,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 02:51:42,789 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 02:51:42,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:51:42,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1435947448, now seen corresponding path program 1 times [2023-11-29 02:51:42,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:51:42,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521608495] [2023-11-29 02:51:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:51:42,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:51:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:51:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:51:43,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:51:43,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521608495] [2023-11-29 02:51:43,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521608495] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:51:43,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383428501] [2023-11-29 02:51:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:51:43,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:51:43,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:51:43,079 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:51:43,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:51:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:51:43,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:51:43,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:51:43,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:51:43,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:51:43,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383428501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:51:43,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:51:43,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-11-29 02:51:43,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728113333] [2023-11-29 02:51:43,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:51:43,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:51:43,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:51:43,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:51:43,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:51:43,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 91 [2023-11-29 02:51:43,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 145 transitions, 925 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 02:51:43,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:51:43,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 91 [2023-11-29 02:51:43,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:51:55,018 INFO L124 PetriNetUnfolderBase]: 83508/135984 cut-off events. [2023-11-29 02:51:55,018 INFO L125 PetriNetUnfolderBase]: For 51933/52221 co-relation queries the response was YES. [2023-11-29 02:51:55,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299664 conditions, 135984 events. 83508/135984 cut-off events. For 51933/52221 co-relation queries the response was YES. Maximal size of possible extension queue 3845. Compared 1216831 event pairs, 53736 based on Foata normal form. 1856/124436 useless extension candidates. Maximal degree in co-relation 299627. Up to 104719 conditions per place. [2023-11-29 02:51:55,968 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 99 selfloop transitions, 6 changer transitions 0/143 dead transitions. [2023-11-29 02:51:55,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 1122 flow [2023-11-29 02:51:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:51:55,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:51:55,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2023-11-29 02:51:55,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2023-11-29 02:51:55,969 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 203 transitions. [2023-11-29 02:51:55,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 203 transitions. [2023-11-29 02:51:55,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:51:55,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 203 transitions. [2023-11-29 02:51:55,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 02:51:55,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 02:51:55,971 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 02:51:55,971 INFO L175 Difference]: Start difference. First operand has 137 places, 145 transitions, 925 flow. Second operand 4 states and 203 transitions. [2023-11-29 02:51:55,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 1122 flow [2023-11-29 02:51:56,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 143 transitions, 1080 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 02:51:56,665 INFO L231 Difference]: Finished difference. Result has 134 places, 143 transitions, 882 flow [2023-11-29 02:51:56,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=882, PETRI_PLACES=134, PETRI_TRANSITIONS=143} [2023-11-29 02:51:56,666 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 53 predicate places. [2023-11-29 02:51:56,666 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 143 transitions, 882 flow [2023-11-29 02:51:56,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 02:51:56,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:51:56,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:51:56,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:51:56,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 02:51:56,867 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 02:51:56,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:51:56,867 INFO L85 PathProgramCache]: Analyzing trace with hash 996085203, now seen corresponding path program 1 times [2023-11-29 02:51:56,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:51:56,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159995170] [2023-11-29 02:51:56,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:51:56,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:51:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:51:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:51:56,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:51:56,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159995170] [2023-11-29 02:51:56,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159995170] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:51:56,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130432376] [2023-11-29 02:51:56,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:51:56,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:51:56,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:51:56,998 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:51:56,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:51:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:51:57,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:51:57,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:51:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:51:57,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:51:57,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130432376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:51:57,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:51:57,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-29 02:51:57,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667590014] [2023-11-29 02:51:57,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:51:57,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:51:57,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:51:57,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:51:57,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:51:57,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 91 [2023-11-29 02:51:57,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 143 transitions, 882 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 02:51:57,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:51:57,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 91 [2023-11-29 02:51:57,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:52:08,671 INFO L124 PetriNetUnfolderBase]: 83508/135840 cut-off events. [2023-11-29 02:52:08,671 INFO L125 PetriNetUnfolderBase]: For 50713/51001 co-relation queries the response was YES. [2023-11-29 02:52:09,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299146 conditions, 135840 events. 83508/135840 cut-off events. For 50713/51001 co-relation queries the response was YES. Maximal size of possible extension queue 3832. Compared 1213304 event pairs, 53736 based on Foata normal form. 1590/124026 useless extension candidates. Maximal degree in co-relation 299111. Up to 104730 conditions per place. [2023-11-29 02:52:09,629 INFO L140 encePairwiseOnDemand]: 89/91 looper letters, 104 selfloop transitions, 1 changer transitions 0/141 dead transitions. [2023-11-29 02:52:09,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 141 transitions, 1079 flow [2023-11-29 02:52:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:52:09,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:52:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2023-11-29 02:52:09,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6043956043956044 [2023-11-29 02:52:09,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2023-11-29 02:52:09,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2023-11-29 02:52:09,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:52:09,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2023-11-29 02:52:09,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 02:52:09,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 02:52:09,633 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 02:52:09,633 INFO L175 Difference]: Start difference. First operand has 134 places, 143 transitions, 882 flow. Second operand 3 states and 165 transitions. [2023-11-29 02:52:09,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 141 transitions, 1079 flow [2023-11-29 02:52:10,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 141 transitions, 1063 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 02:52:10,486 INFO L231 Difference]: Finished difference. Result has 129 places, 141 transitions, 855 flow [2023-11-29 02:52:10,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=855, PETRI_PLACES=129, PETRI_TRANSITIONS=141} [2023-11-29 02:52:10,487 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 48 predicate places. [2023-11-29 02:52:10,487 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 141 transitions, 855 flow [2023-11-29 02:52:10,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 02:52:10,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:52:10,488 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:52:10,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:52:10,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d5eeb2f-8f58-402b-aaed-b80176881a77/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:52:10,688 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 02:52:10,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:52:10,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1122028379, now seen corresponding path program 1 times [2023-11-29 02:52:10,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:52:10,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521812652] [2023-11-29 02:52:10,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:52:10,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:52:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:52:10,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:52:10,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521812652] [2023-11-29 02:52:10,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521812652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:52:10,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:52:10,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:52:10,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420060400] [2023-11-29 02:52:10,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:52:10,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:52:10,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:52:10,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:52:10,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:52:10,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 91 [2023-11-29 02:52:10,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 141 transitions, 855 flow. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 02:52:10,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:52:10,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 91 [2023-11-29 02:52:10,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand