./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB --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 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:00:56,662 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:00:56,772 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:00:56,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:00:56,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:00:56,807 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:00:56,808 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:00:56,808 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:00:56,808 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:00:56,809 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:00:56,809 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:00:56,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:00:56,809 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:00:56,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:00:56,810 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:00:56,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:00:56,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:00:56,810 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:00:56,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:00:56,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:00:56,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:00:56,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:00:56,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:00:56,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:00:56,811 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:00:56,811 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:00:56,811 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:00:56,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:00:56,812 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:00:56,812 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:00:56,812 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:00:56,812 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:00:56,812 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:00:56,813 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:00:56,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:00:56,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:00:56,813 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:00:56,813 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:00:56,813 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:00:56,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:00:56,813 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:00:56,813 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:00:56,814 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:00:56,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:00:56,814 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:00:56,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:00:56,814 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:00:56,814 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:00:56,814 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:00:56,814 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:00:56,814 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 [2024-11-28 04:00:57,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:00:57,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:00:57,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:00:57,166 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:00:57,167 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:00:57,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-11-28 04:01:00,173 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/data/b03506d49/0cb124f680b547208742742cef218bd0/FLAGfe80b93ec [2024-11-28 04:01:00,494 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:01:00,495 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-11-28 04:01:00,509 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/data/b03506d49/0cb124f680b547208742742cef218bd0/FLAGfe80b93ec [2024-11-28 04:01:00,742 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/data/b03506d49/0cb124f680b547208742742cef218bd0 [2024-11-28 04:01:00,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:01:00,746 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:01:00,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:01:00,748 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:01:00,753 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:01:00,754 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:01:00" (1/1) ... [2024-11-28 04:01:00,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1edfb0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:00, skipping insertion in model container [2024-11-28 04:01:00,755 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:01:00" (1/1) ... [2024-11-28 04:01:00,775 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:01:00,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:01:01,000 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:01:01,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:01:01,086 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:01:01,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:01 WrapperNode [2024-11-28 04:01:01,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:01:01,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:01:01,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:01:01,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:01:01,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:01" (1/1) ... [2024-11-28 04:01:01,107 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:01" (1/1) ... [2024-11-28 04:01:01,145 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 333 [2024-11-28 04:01:01,146 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:01:01,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:01:01,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:01:01,147 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:01:01,157 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:01" (1/1) ... [2024-11-28 04:01:01,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:01" (1/1) ... [2024-11-28 04:01:01,166 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:01" (1/1) ... [2024-11-28 04:01:01,189 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [2, 6, 10]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-11-28 04:01:01,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:01" (1/1) ... [2024-11-28 04:01:01,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:01" (1/1) ... [2024-11-28 04:01:01,201 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:01" (1/1) ... [2024-11-28 04:01:01,203 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:01" (1/1) ... [2024-11-28 04:01:01,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:01" (1/1) ... [2024-11-28 04:01:01,210 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:01" (1/1) ... [2024-11-28 04:01:01,211 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:01" (1/1) ... [2024-11-28 04:01:01,219 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:01:01,220 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:01:01,220 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:01:01,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:01:01,222 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:01" (1/1) ... [2024-11-28 04:01:01,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:01:01,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:01,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:01:01,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:01:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:01:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:01:01,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:01:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:01:01,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:01:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:01:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:01:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:01:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:01:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:01:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:01:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:01:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:01:01,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:01:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:01:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:01:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:01:01,302 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:01:01,450 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:01:01,452 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:01:02,215 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:01:02,215 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:01:02,727 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:01:02,727 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 04:01:02,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:01:02 BoogieIcfgContainer [2024-11-28 04:01:02,728 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:01:02,732 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:01:02,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:01:02,740 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:01:02,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:01:00" (1/3) ... [2024-11-28 04:01:02,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67784db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:01:02, skipping insertion in model container [2024-11-28 04:01:02,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:01" (2/3) ... [2024-11-28 04:01:02,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67784db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:01:02, skipping insertion in model container [2024-11-28 04:01:02,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:01:02" (3/3) ... [2024-11-28 04:01:02,744 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2024-11-28 04:01:02,762 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:01:02,765 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-node-symm.wvr.c that has 3 procedures, 88 locations, 1 initial locations, 4 loop locations, and 30 error locations. [2024-11-28 04:01:02,765 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:01:02,902 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 04:01:02,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 97 transitions, 208 flow [2024-11-28 04:01:03,019 INFO L124 PetriNetUnfolderBase]: 10/95 cut-off events. [2024-11-28 04:01:03,023 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 04:01:03,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 10/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 238 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-11-28 04:01:03,031 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 97 transitions, 208 flow [2024-11-28 04:01:03,036 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 94 transitions, 200 flow [2024-11-28 04:01:03,050 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:01:03,069 INFO L333 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, 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;@ff56681, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:01:03,071 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-11-28 04:01:03,075 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:01:03,075 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-28 04:01:03,075 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:01:03,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:03,076 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-28 04:01:03,077 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:03,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:03,083 INFO L85 PathProgramCache]: Analyzing trace with hash 33350, now seen corresponding path program 1 times [2024-11-28 04:01:03,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:03,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867643578] [2024-11-28 04:01:03,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:03,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:03,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:03,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867643578] [2024-11-28 04:01:03,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867643578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:03,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:03,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:01:03,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118129787] [2024-11-28 04:01:03,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:03,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:03,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:03,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:03,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:03,378 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-28 04:01:03,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:03,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:03,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-28 04:01:03,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:03,746 INFO L124 PetriNetUnfolderBase]: 281/738 cut-off events. [2024-11-28 04:01:03,747 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-28 04:01:03,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1210 conditions, 738 events. 281/738 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4427 event pairs, 172 based on Foata normal form. 4/570 useless extension candidates. Maximal degree in co-relation 1097. Up to 444 conditions per place. [2024-11-28 04:01:03,759 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 41 selfloop transitions, 1 changer transitions 2/90 dead transitions. [2024-11-28 04:01:03,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 278 flow [2024-11-28 04:01:03,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:03,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:01:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2024-11-28 04:01:03,780 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 04:01:03,782 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 200 flow. Second operand 3 states and 194 transitions. [2024-11-28 04:01:03,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 278 flow [2024-11-28 04:01:03,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 270 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 04:01:03,796 INFO L231 Difference]: Finished difference. Result has 85 places, 88 transitions, 181 flow [2024-11-28 04:01:03,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=85, PETRI_TRANSITIONS=88} [2024-11-28 04:01:03,804 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, -6 predicate places. [2024-11-28 04:01:03,806 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 88 transitions, 181 flow [2024-11-28 04:01:03,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:03,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:03,807 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:01:03,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:01:03,808 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:03,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:03,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1034855, now seen corresponding path program 1 times [2024-11-28 04:01:03,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:03,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723987883] [2024-11-28 04:01:03,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:03,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:03,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:03,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723987883] [2024-11-28 04:01:03,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723987883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:03,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:03,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:01:03,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572434833] [2024-11-28 04:01:03,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:03,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:03,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:03,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:03,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:03,907 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-28 04:01:03,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 88 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:03,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:03,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-28 04:01:03,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:04,182 INFO L124 PetriNetUnfolderBase]: 281/734 cut-off events. [2024-11-28 04:01:04,182 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-28 04:01:04,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 734 events. 281/734 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4403 event pairs, 172 based on Foata normal form. 0/564 useless extension candidates. Maximal degree in co-relation 1181. Up to 441 conditions per place. [2024-11-28 04:01:04,193 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 39 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2024-11-28 04:01:04,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 86 transitions, 257 flow [2024-11-28 04:01:04,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:04,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:01:04,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2024-11-28 04:01:04,196 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6494845360824743 [2024-11-28 04:01:04,196 INFO L175 Difference]: Start difference. First operand has 85 places, 88 transitions, 181 flow. Second operand 3 states and 189 transitions. [2024-11-28 04:01:04,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 86 transitions, 257 flow [2024-11-28 04:01:04,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:01:04,202 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 178 flow [2024-11-28 04:01:04,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2024-11-28 04:01:04,203 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, -9 predicate places. [2024-11-28 04:01:04,203 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 178 flow [2024-11-28 04:01:04,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:04,204 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:04,204 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 04:01:04,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:01:04,205 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:04,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:04,205 INFO L85 PathProgramCache]: Analyzing trace with hash 994528575, now seen corresponding path program 1 times [2024-11-28 04:01:04,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:04,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793948614] [2024-11-28 04:01:04,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:04,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:04,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:04,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793948614] [2024-11-28 04:01:04,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793948614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:04,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:04,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:04,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083588493] [2024-11-28 04:01:04,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:04,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:01:04,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:04,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:01:04,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:01:04,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-28 04:01:04,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:04,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:04,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-28 04:01:04,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:04,750 INFO L124 PetriNetUnfolderBase]: 283/742 cut-off events. [2024-11-28 04:01:04,750 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-28 04:01:04,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 742 events. 283/742 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4453 event pairs, 172 based on Foata normal form. 2/572 useless extension candidates. Maximal degree in co-relation 1199. Up to 448 conditions per place. [2024-11-28 04:01:04,756 INFO L140 encePairwiseOnDemand]: 85/97 looper letters, 42 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-11-28 04:01:04,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 92 transitions, 290 flow [2024-11-28 04:01:04,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:01:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:01:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 250 transitions. [2024-11-28 04:01:04,763 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6443298969072165 [2024-11-28 04:01:04,763 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 178 flow. Second operand 4 states and 250 transitions. [2024-11-28 04:01:04,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 92 transitions, 290 flow [2024-11-28 04:01:04,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 92 transitions, 289 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:01:04,770 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 235 flow [2024-11-28 04:01:04,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-11-28 04:01:04,772 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2024-11-28 04:01:04,773 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 235 flow [2024-11-28 04:01:04,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:04,773 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:04,774 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 04:01:04,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:01:04,774 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:04,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:04,775 INFO L85 PathProgramCache]: Analyzing trace with hash 994528617, now seen corresponding path program 1 times [2024-11-28 04:01:04,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:04,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45578174] [2024-11-28 04:01:04,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:04,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:04,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:04,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45578174] [2024-11-28 04:01:04,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45578174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:04,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:04,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:01:04,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294980871] [2024-11-28 04:01:04,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:04,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:04,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:04,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:04,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:04,875 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-28 04:01:04,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:04,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:04,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-28 04:01:04,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:05,112 INFO L124 PetriNetUnfolderBase]: 283/740 cut-off events. [2024-11-28 04:01:05,112 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-28 04:01:05,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 740 events. 283/740 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4478 event pairs, 172 based on Foata normal form. 2/575 useless extension candidates. Maximal degree in co-relation 1219. Up to 449 conditions per place. [2024-11-28 04:01:05,118 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 47 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2024-11-28 04:01:05,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 327 flow [2024-11-28 04:01:05,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:05,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:01:05,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2024-11-28 04:01:05,124 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6563573883161512 [2024-11-28 04:01:05,124 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 235 flow. Second operand 3 states and 191 transitions. [2024-11-28 04:01:05,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 327 flow [2024-11-28 04:01:05,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 321 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:01:05,130 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 227 flow [2024-11-28 04:01:05,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2024-11-28 04:01:05,131 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, -6 predicate places. [2024-11-28 04:01:05,131 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 227 flow [2024-11-28 04:01:05,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:05,131 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:05,132 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:01:05,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:01:05,132 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:05,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:05,134 INFO L85 PathProgramCache]: Analyzing trace with hash 765617070, now seen corresponding path program 1 times [2024-11-28 04:01:05,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:05,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517352561] [2024-11-28 04:01:05,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:05,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:05,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:05,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:05,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517352561] [2024-11-28 04:01:05,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517352561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:05,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:05,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:01:05,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504952141] [2024-11-28 04:01:05,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:05,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:05,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:05,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:05,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:05,229 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-28 04:01:05,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:05,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:05,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-28 04:01:05,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:05,450 INFO L124 PetriNetUnfolderBase]: 283/738 cut-off events. [2024-11-28 04:01:05,450 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-28 04:01:05,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 738 events. 283/738 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4472 event pairs, 172 based on Foata normal form. 1/573 useless extension candidates. Maximal degree in co-relation 1211. Up to 447 conditions per place. [2024-11-28 04:01:05,457 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 45 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2024-11-28 04:01:05,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 88 transitions, 315 flow [2024-11-28 04:01:05,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:05,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:01:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2024-11-28 04:01:05,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6494845360824743 [2024-11-28 04:01:05,460 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 227 flow. Second operand 3 states and 189 transitions. [2024-11-28 04:01:05,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 88 transitions, 315 flow [2024-11-28 04:01:05,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 88 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:01:05,466 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 224 flow [2024-11-28 04:01:05,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2024-11-28 04:01:05,467 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, -7 predicate places. [2024-11-28 04:01:05,471 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 224 flow [2024-11-28 04:01:05,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:05,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:05,471 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:05,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:01:05,472 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:05,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:05,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1317390845, now seen corresponding path program 1 times [2024-11-28 04:01:05,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:05,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755815606] [2024-11-28 04:01:05,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:05,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:05,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:05,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755815606] [2024-11-28 04:01:05,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755815606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:05,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600627273] [2024-11-28 04:01:05,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:05,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:05,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:05,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:05,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:01:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:05,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:01:05,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:05,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:05,831 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:01:05,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600627273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:05,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:01:05,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 04:01:05,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679154990] [2024-11-28 04:01:05,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:05,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:01:05,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:05,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:01:05,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:01:05,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-28 04:01:05,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:05,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:05,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-28 04:01:05,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:06,184 INFO L124 PetriNetUnfolderBase]: 283/736 cut-off events. [2024-11-28 04:01:06,185 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-28 04:01:06,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 736 events. 283/736 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4447 event pairs, 172 based on Foata normal form. 2/570 useless extension candidates. Maximal degree in co-relation 1209. Up to 438 conditions per place. [2024-11-28 04:01:06,192 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 34 selfloop transitions, 14 changer transitions 0/86 dead transitions. [2024-11-28 04:01:06,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 86 transitions, 312 flow [2024-11-28 04:01:06,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:01:06,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:01:06,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 344 transitions. [2024-11-28 04:01:06,195 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5910652920962199 [2024-11-28 04:01:06,196 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 224 flow. Second operand 6 states and 344 transitions. [2024-11-28 04:01:06,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 86 transitions, 312 flow [2024-11-28 04:01:06,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 86 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:01:06,201 INFO L231 Difference]: Finished difference. Result has 86 places, 86 transitions, 243 flow [2024-11-28 04:01:06,203 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=243, PETRI_PLACES=86, PETRI_TRANSITIONS=86} [2024-11-28 04:01:06,204 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2024-11-28 04:01:06,206 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 86 transitions, 243 flow [2024-11-28 04:01:06,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:06,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:06,207 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-28 04:01:06,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:01:06,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 04:01:06,408 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:06,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:06,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2110555737, now seen corresponding path program 1 times [2024-11-28 04:01:06,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:06,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066899789] [2024-11-28 04:01:06,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:06,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:06,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:06,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066899789] [2024-11-28 04:01:06,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066899789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:06,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261968156] [2024-11-28 04:01:06,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:06,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:06,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:06,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:06,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:01:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:06,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:01:06,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:06,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:06,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:06,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261968156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:06,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:01:06,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 04:01:06,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300360949] [2024-11-28 04:01:06,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:06,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:01:06,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:06,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:01:06,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:01:06,828 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-28 04:01:06,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 86 transitions, 243 flow. Second operand has 12 states, 12 states have (on average 50.166666666666664) internal successors, (602), 12 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:06,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:06,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-28 04:01:06,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:07,189 INFO L124 PetriNetUnfolderBase]: 289/760 cut-off events. [2024-11-28 04:01:07,189 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-11-28 04:01:07,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 760 events. 289/760 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4595 event pairs, 172 based on Foata normal form. 6/594 useless extension candidates. Maximal degree in co-relation 1301. Up to 452 conditions per place. [2024-11-28 04:01:07,194 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 40 selfloop transitions, 26 changer transitions 0/104 dead transitions. [2024-11-28 04:01:07,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 104 transitions, 483 flow [2024-11-28 04:01:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:01:07,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:01:07,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 562 transitions. [2024-11-28 04:01:07,198 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5793814432989691 [2024-11-28 04:01:07,198 INFO L175 Difference]: Start difference. First operand has 86 places, 86 transitions, 243 flow. Second operand 10 states and 562 transitions. [2024-11-28 04:01:07,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 104 transitions, 483 flow [2024-11-28 04:01:07,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 104 transitions, 423 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-11-28 04:01:07,202 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 379 flow [2024-11-28 04:01:07,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=379, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2024-11-28 04:01:07,203 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2024-11-28 04:01:07,203 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 379 flow [2024-11-28 04:01:07,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.166666666666664) internal successors, (602), 12 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:07,204 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:07,204 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:07,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:01:07,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:01:07,404 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:07,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:07,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1498363813, now seen corresponding path program 1 times [2024-11-28 04:01:07,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:07,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510534597] [2024-11-28 04:01:07,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:07,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:07,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:07,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510534597] [2024-11-28 04:01:07,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510534597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:07,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:07,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:07,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293771524] [2024-11-28 04:01:07,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:07,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:01:07,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:07,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:01:07,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:01:07,527 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-28 04:01:07,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:07,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:07,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-28 04:01:07,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:07,779 INFO L124 PetriNetUnfolderBase]: 291/768 cut-off events. [2024-11-28 04:01:07,779 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-28 04:01:07,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 768 events. 291/768 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4648 event pairs, 172 based on Foata normal form. 2/602 useless extension candidates. Maximal degree in co-relation 1327. Up to 472 conditions per place. [2024-11-28 04:01:07,784 INFO L140 encePairwiseOnDemand]: 85/97 looper letters, 66 selfloop transitions, 8 changer transitions 0/110 dead transitions. [2024-11-28 04:01:07,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 110 transitions, 539 flow [2024-11-28 04:01:07,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:01:07,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:01:07,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 250 transitions. [2024-11-28 04:01:07,788 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6443298969072165 [2024-11-28 04:01:07,788 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 379 flow. Second operand 4 states and 250 transitions. [2024-11-28 04:01:07,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 110 transitions, 539 flow [2024-11-28 04:01:07,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 110 transitions, 517 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-28 04:01:07,793 INFO L231 Difference]: Finished difference. Result has 97 places, 110 transitions, 415 flow [2024-11-28 04:01:07,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=415, PETRI_PLACES=97, PETRI_TRANSITIONS=110} [2024-11-28 04:01:07,795 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 6 predicate places. [2024-11-28 04:01:07,797 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 110 transitions, 415 flow [2024-11-28 04:01:07,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:07,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:07,798 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:07,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:01:07,798 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:07,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:07,799 INFO L85 PathProgramCache]: Analyzing trace with hash 162251292, now seen corresponding path program 1 times [2024-11-28 04:01:07,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:07,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574970757] [2024-11-28 04:01:07,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:07,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:08,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:08,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574970757] [2024-11-28 04:01:08,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574970757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:08,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:08,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:08,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609493743] [2024-11-28 04:01:08,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:08,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:01:08,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:08,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:01:08,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:01:08,042 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-28 04:01:08,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 110 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:08,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:08,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-28 04:01:08,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:08,265 INFO L124 PetriNetUnfolderBase]: 290/767 cut-off events. [2024-11-28 04:01:08,266 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-11-28 04:01:08,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1350 conditions, 767 events. 290/767 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4621 event pairs, 172 based on Foata normal form. 1/604 useless extension candidates. Maximal degree in co-relation 1334. Up to 468 conditions per place. [2024-11-28 04:01:08,271 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 66 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2024-11-28 04:01:08,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 109 transitions, 549 flow [2024-11-28 04:01:08,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:01:08,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:01:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-28 04:01:08,277 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.615979381443299 [2024-11-28 04:01:08,277 INFO L175 Difference]: Start difference. First operand has 97 places, 110 transitions, 415 flow. Second operand 4 states and 239 transitions. [2024-11-28 04:01:08,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 109 transitions, 549 flow [2024-11-28 04:01:08,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 109 transitions, 543 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:01:08,284 INFO L231 Difference]: Finished difference. Result has 99 places, 109 transitions, 411 flow [2024-11-28 04:01:08,285 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=411, PETRI_PLACES=99, PETRI_TRANSITIONS=109} [2024-11-28 04:01:08,285 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2024-11-28 04:01:08,285 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 109 transitions, 411 flow [2024-11-28 04:01:08,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:08,286 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:08,286 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:08,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:01:08,288 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:08,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:08,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1652901090, now seen corresponding path program 1 times [2024-11-28 04:01:08,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:08,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177486604] [2024-11-28 04:01:08,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:08,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:01:08,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:08,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177486604] [2024-11-28 04:01:08,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177486604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:08,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:08,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:08,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272254412] [2024-11-28 04:01:08,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:08,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:01:08,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:08,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:01:08,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:01:08,515 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-28 04:01:08,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 109 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:08,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:08,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-28 04:01:08,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:08,736 INFO L124 PetriNetUnfolderBase]: 289/766 cut-off events. [2024-11-28 04:01:08,736 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-11-28 04:01:08,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1346 conditions, 766 events. 289/766 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4551 event pairs, 172 based on Foata normal form. 1/603 useless extension candidates. Maximal degree in co-relation 1329. Up to 467 conditions per place. [2024-11-28 04:01:08,741 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 65 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2024-11-28 04:01:08,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 108 transitions, 543 flow [2024-11-28 04:01:08,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:01:08,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:01:08,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-28 04:01:08,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.615979381443299 [2024-11-28 04:01:08,743 INFO L175 Difference]: Start difference. First operand has 99 places, 109 transitions, 411 flow. Second operand 4 states and 239 transitions. [2024-11-28 04:01:08,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 108 transitions, 543 flow [2024-11-28 04:01:08,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 108 transitions, 539 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:01:08,747 INFO L231 Difference]: Finished difference. Result has 100 places, 108 transitions, 409 flow [2024-11-28 04:01:08,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=100, PETRI_TRANSITIONS=108} [2024-11-28 04:01:08,748 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 9 predicate places. [2024-11-28 04:01:08,748 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 108 transitions, 409 flow [2024-11-28 04:01:08,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:08,749 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:08,749 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2024-11-28 04:01:08,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:01:08,749 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:08,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:08,749 INFO L85 PathProgramCache]: Analyzing trace with hash 540467237, now seen corresponding path program 2 times [2024-11-28 04:01:08,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:08,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401604513] [2024-11-28 04:01:08,750 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:01:08,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:08,767 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:01:08,768 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:01:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:01:08,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:08,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401604513] [2024-11-28 04:01:08,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401604513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:08,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411088934] [2024-11-28 04:01:08,870 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:01:08,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:08,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:08,872 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:08,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:01:08,965 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:01:08,966 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:01:08,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:01:08,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:09,023 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:01:09,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:09,066 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:01:09,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411088934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:09,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:01:09,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-28 04:01:09,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971123840] [2024-11-28 04:01:09,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:09,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:01:09,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:09,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:01:09,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:01:09,100 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 97 [2024-11-28 04:01:09,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 108 transitions, 409 flow. Second operand has 5 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:09,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:09,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 97 [2024-11-28 04:01:09,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:09,343 INFO L124 PetriNetUnfolderBase]: 289/764 cut-off events. [2024-11-28 04:01:09,344 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-28 04:01:09,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 764 events. 289/764 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4549 event pairs, 172 based on Foata normal form. 2/602 useless extension candidates. Maximal degree in co-relation 1320. Up to 447 conditions per place. [2024-11-28 04:01:09,349 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 37 selfloop transitions, 31 changer transitions 0/106 dead transitions. [2024-11-28 04:01:09,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 106 transitions, 525 flow [2024-11-28 04:01:09,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:01:09,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:01:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 267 transitions. [2024-11-28 04:01:09,351 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5505154639175258 [2024-11-28 04:01:09,352 INFO L175 Difference]: Start difference. First operand has 100 places, 108 transitions, 409 flow. Second operand 5 states and 267 transitions. [2024-11-28 04:01:09,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 106 transitions, 525 flow [2024-11-28 04:01:09,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 106 transitions, 501 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-28 04:01:09,355 INFO L231 Difference]: Finished difference. Result has 96 places, 106 transitions, 427 flow [2024-11-28 04:01:09,355 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=96, PETRI_TRANSITIONS=106} [2024-11-28 04:01:09,356 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2024-11-28 04:01:09,356 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 106 transitions, 427 flow [2024-11-28 04:01:09,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:09,357 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:09,357 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:09,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:01:09,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:01:09,562 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:09,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:09,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1092477048, now seen corresponding path program 1 times [2024-11-28 04:01:09,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:09,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800036938] [2024-11-28 04:01:09,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:09,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:09,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:09,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800036938] [2024-11-28 04:01:09,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800036938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:09,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586768676] [2024-11-28 04:01:09,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:09,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:09,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:09,698 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:09,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:01:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:09,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:01:09,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:09,853 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:01:09,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586768676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:09,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:01:09,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 04:01:09,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119619354] [2024-11-28 04:01:09,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:09,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:01:09,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:09,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:01:09,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:01:09,874 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-28 04:01:09,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 106 transitions, 427 flow. Second operand has 6 states, 6 states have (on average 51.333333333333336) internal successors, (308), 6 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:09,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:09,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-28 04:01:09,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:10,146 INFO L124 PetriNetUnfolderBase]: 289/762 cut-off events. [2024-11-28 04:01:10,146 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-28 04:01:10,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1350 conditions, 762 events. 289/762 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4537 event pairs, 172 based on Foata normal form. 2/592 useless extension candidates. Maximal degree in co-relation 1337. Up to 460 conditions per place. [2024-11-28 04:01:10,151 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 56 selfloop transitions, 14 changer transitions 0/104 dead transitions. [2024-11-28 04:01:10,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 104 transitions, 559 flow [2024-11-28 04:01:10,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:01:10,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:01:10,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 344 transitions. [2024-11-28 04:01:10,154 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5910652920962199 [2024-11-28 04:01:10,154 INFO L175 Difference]: Start difference. First operand has 96 places, 106 transitions, 427 flow. Second operand 6 states and 344 transitions. [2024-11-28 04:01:10,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 104 transitions, 559 flow [2024-11-28 04:01:10,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 104 transitions, 497 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 04:01:10,157 INFO L231 Difference]: Finished difference. Result has 95 places, 104 transitions, 385 flow [2024-11-28 04:01:10,157 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=385, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2024-11-28 04:01:10,158 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 4 predicate places. [2024-11-28 04:01:10,158 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 385 flow [2024-11-28 04:01:10,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.333333333333336) internal successors, (308), 6 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:10,159 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:10,159 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:10,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:01:10,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:01:10,360 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:10,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:10,361 INFO L85 PathProgramCache]: Analyzing trace with hash 492950891, now seen corresponding path program 1 times [2024-11-28 04:01:10,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:10,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640162831] [2024-11-28 04:01:10,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:10,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:10,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:10,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640162831] [2024-11-28 04:01:10,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640162831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:10,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245947753] [2024-11-28 04:01:10,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:10,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:10,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:10,507 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:10,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:01:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:10,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:01:10,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:10,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:10,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245947753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:10,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:01:10,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 04:01:10,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904352783] [2024-11-28 04:01:10,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:10,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:01:10,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:10,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:01:10,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:01:10,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-28 04:01:10,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 385 flow. Second operand has 12 states, 12 states have (on average 50.833333333333336) internal successors, (610), 12 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:10,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:10,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-28 04:01:10,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:11,070 INFO L124 PetriNetUnfolderBase]: 295/786 cut-off events. [2024-11-28 04:01:11,070 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-28 04:01:11,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1411 conditions, 786 events. 295/786 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4740 event pairs, 172 based on Foata normal form. 6/616 useless extension candidates. Maximal degree in co-relation 1399. Up to 474 conditions per place. [2024-11-28 04:01:11,075 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 62 selfloop transitions, 26 changer transitions 0/122 dead transitions. [2024-11-28 04:01:11,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 122 transitions, 669 flow [2024-11-28 04:01:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:01:11,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:01:11,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 562 transitions. [2024-11-28 04:01:11,078 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5793814432989691 [2024-11-28 04:01:11,079 INFO L175 Difference]: Start difference. First operand has 95 places, 104 transitions, 385 flow. Second operand 10 states and 562 transitions. [2024-11-28 04:01:11,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 122 transitions, 669 flow [2024-11-28 04:01:11,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 122 transitions, 609 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-11-28 04:01:11,083 INFO L231 Difference]: Finished difference. Result has 103 places, 122 transitions, 521 flow [2024-11-28 04:01:11,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=521, PETRI_PLACES=103, PETRI_TRANSITIONS=122} [2024-11-28 04:01:11,084 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 12 predicate places. [2024-11-28 04:01:11,084 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 122 transitions, 521 flow [2024-11-28 04:01:11,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.833333333333336) internal successors, (610), 12 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:11,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:11,085 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:11,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:01:11,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:11,289 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:11,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:11,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1209257143, now seen corresponding path program 1 times [2024-11-28 04:01:11,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:11,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928519730] [2024-11-28 04:01:11,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:11,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:11,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:11,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928519730] [2024-11-28 04:01:11,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928519730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:11,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:11,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:11,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681995673] [2024-11-28 04:01:11,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:11,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:01:11,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:11,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:01:11,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:01:11,430 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-28 04:01:11,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 122 transitions, 521 flow. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:11,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:11,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-28 04:01:11,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:11,779 INFO L124 PetriNetUnfolderBase]: 556/1259 cut-off events. [2024-11-28 04:01:11,779 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-11-28 04:01:11,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2310 conditions, 1259 events. 556/1259 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7991 event pairs, 175 based on Foata normal form. 40/1047 useless extension candidates. Maximal degree in co-relation 2296. Up to 460 conditions per place. [2024-11-28 04:01:11,787 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 114 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2024-11-28 04:01:11,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 149 transitions, 815 flow [2024-11-28 04:01:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:01:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:01:11,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 264 transitions. [2024-11-28 04:01:11,789 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6804123711340206 [2024-11-28 04:01:11,789 INFO L175 Difference]: Start difference. First operand has 103 places, 122 transitions, 521 flow. Second operand 4 states and 264 transitions. [2024-11-28 04:01:11,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 149 transitions, 815 flow [2024-11-28 04:01:11,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 149 transitions, 793 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-28 04:01:11,795 INFO L231 Difference]: Finished difference. Result has 106 places, 124 transitions, 533 flow [2024-11-28 04:01:11,796 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=533, PETRI_PLACES=106, PETRI_TRANSITIONS=124} [2024-11-28 04:01:11,797 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 15 predicate places. [2024-11-28 04:01:11,797 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 124 transitions, 533 flow [2024-11-28 04:01:11,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:11,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:11,798 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:11,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:01:11,798 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:11,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:11,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1167733124, now seen corresponding path program 1 times [2024-11-28 04:01:11,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:11,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731984312] [2024-11-28 04:01:11,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:11,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:01:12,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:12,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731984312] [2024-11-28 04:01:12,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731984312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:12,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376823144] [2024-11-28 04:01:12,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:12,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:12,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:12,119 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:12,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:01:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:12,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:01:12,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:12,292 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:01:12,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376823144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:12,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:01:12,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 04:01:12,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390673360] [2024-11-28 04:01:12,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:12,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:01:12,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:12,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:01:12,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:01:12,307 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-28 04:01:12,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 124 transitions, 533 flow. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:12,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:12,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-28 04:01:12,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:12,541 INFO L124 PetriNetUnfolderBase]: 367/1007 cut-off events. [2024-11-28 04:01:12,541 INFO L125 PetriNetUnfolderBase]: For 283/302 co-relation queries the response was YES. [2024-11-28 04:01:12,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 1007 events. 367/1007 cut-off events. For 283/302 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6620 event pairs, 226 based on Foata normal form. 12/830 useless extension candidates. Maximal degree in co-relation 1915. Up to 597 conditions per place. [2024-11-28 04:01:12,548 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 84 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2024-11-28 04:01:12,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 123 transitions, 703 flow [2024-11-28 04:01:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:01:12,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:01:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-28 04:01:12,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.615979381443299 [2024-11-28 04:01:12,551 INFO L175 Difference]: Start difference. First operand has 106 places, 124 transitions, 533 flow. Second operand 4 states and 239 transitions. [2024-11-28 04:01:12,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 123 transitions, 703 flow [2024-11-28 04:01:12,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 123 transitions, 703 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:01:12,557 INFO L231 Difference]: Finished difference. Result has 109 places, 123 transitions, 535 flow [2024-11-28 04:01:12,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=535, PETRI_PLACES=109, PETRI_TRANSITIONS=123} [2024-11-28 04:01:12,557 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 18 predicate places. [2024-11-28 04:01:12,557 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 123 transitions, 535 flow [2024-11-28 04:01:12,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:12,558 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:12,558 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:12,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:01:12,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:01:12,761 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:12,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:12,762 INFO L85 PathProgramCache]: Analyzing trace with hash 524877131, now seen corresponding path program 1 times [2024-11-28 04:01:12,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:12,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5332123] [2024-11-28 04:01:12,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:12,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:12,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:01:12,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5332123] [2024-11-28 04:01:12,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5332123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:12,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:12,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:12,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458451478] [2024-11-28 04:01:12,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:12,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:01:12,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:12,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:01:12,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:01:12,953 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-28 04:01:12,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 123 transitions, 535 flow. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:12,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:12,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-28 04:01:12,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:13,203 INFO L124 PetriNetUnfolderBase]: 366/1006 cut-off events. [2024-11-28 04:01:13,203 INFO L125 PetriNetUnfolderBase]: For 287/306 co-relation queries the response was YES. [2024-11-28 04:01:13,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1933 conditions, 1006 events. 366/1006 cut-off events. For 287/306 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6545 event pairs, 226 based on Foata normal form. 12/829 useless extension candidates. Maximal degree in co-relation 1914. Up to 596 conditions per place. [2024-11-28 04:01:13,210 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 83 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2024-11-28 04:01:13,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 122 transitions, 703 flow [2024-11-28 04:01:13,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:01:13,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:01:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-28 04:01:13,212 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.615979381443299 [2024-11-28 04:01:13,212 INFO L175 Difference]: Start difference. First operand has 109 places, 123 transitions, 535 flow. Second operand 4 states and 239 transitions. [2024-11-28 04:01:13,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 122 transitions, 703 flow [2024-11-28 04:01:13,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 122 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:01:13,218 INFO L231 Difference]: Finished difference. Result has 110 places, 122 transitions, 533 flow [2024-11-28 04:01:13,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=533, PETRI_PLACES=110, PETRI_TRANSITIONS=122} [2024-11-28 04:01:13,219 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 19 predicate places. [2024-11-28 04:01:13,220 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 122 transitions, 533 flow [2024-11-28 04:01:13,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:13,220 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:13,220 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:13,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:01:13,221 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:13,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:13,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2071349734, now seen corresponding path program 2 times [2024-11-28 04:01:13,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:13,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668659703] [2024-11-28 04:01:13,221 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:01:13,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:13,246 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:01:13,246 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:01:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:01:13,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:13,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668659703] [2024-11-28 04:01:13,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668659703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:13,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636056080] [2024-11-28 04:01:13,440 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:01:13,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:13,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:13,442 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:13,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:01:13,541 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:01:13,541 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:01:13,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:01:13,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:01:13,606 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:13,662 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:01:13,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636056080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:13,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:01:13,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-28 04:01:13,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667051135] [2024-11-28 04:01:13,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:13,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:01:13,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:13,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:01:13,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:01:13,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 97 [2024-11-28 04:01:13,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 122 transitions, 533 flow. Second operand has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:13,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:13,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 97 [2024-11-28 04:01:13,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:14,014 INFO L124 PetriNetUnfolderBase]: 366/1004 cut-off events. [2024-11-28 04:01:14,014 INFO L125 PetriNetUnfolderBase]: For 297/316 co-relation queries the response was YES. [2024-11-28 04:01:14,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 1004 events. 366/1004 cut-off events. For 297/316 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6513 event pairs, 226 based on Foata normal form. 13/828 useless extension candidates. Maximal degree in co-relation 1905. Up to 565 conditions per place. [2024-11-28 04:01:14,021 INFO L140 encePairwiseOnDemand]: 84/97 looper letters, 50 selfloop transitions, 36 changer transitions 0/120 dead transitions. [2024-11-28 04:01:14,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 120 transitions, 685 flow [2024-11-28 04:01:14,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:01:14,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:01:14,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 312 transitions. [2024-11-28 04:01:14,023 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5360824742268041 [2024-11-28 04:01:14,023 INFO L175 Difference]: Start difference. First operand has 110 places, 122 transitions, 533 flow. Second operand 6 states and 312 transitions. [2024-11-28 04:01:14,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 120 transitions, 685 flow [2024-11-28 04:01:14,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 120 transitions, 661 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-28 04:01:14,028 INFO L231 Difference]: Finished difference. Result has 107 places, 120 transitions, 561 flow [2024-11-28 04:01:14,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=561, PETRI_PLACES=107, PETRI_TRANSITIONS=120} [2024-11-28 04:01:14,029 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 16 predicate places. [2024-11-28 04:01:14,029 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 120 transitions, 561 flow [2024-11-28 04:01:14,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:14,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:14,030 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:14,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:01:14,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:01:14,230 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:14,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:14,231 INFO L85 PathProgramCache]: Analyzing trace with hash -646243065, now seen corresponding path program 1 times [2024-11-28 04:01:14,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:14,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429355970] [2024-11-28 04:01:14,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:14,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:01:15,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:15,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429355970] [2024-11-28 04:01:15,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429355970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:15,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414493768] [2024-11-28 04:01:15,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:15,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:15,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:15,122 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:15,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:01:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:15,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 04:01:15,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:15,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:01:15,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:01:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:01:15,628 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:15,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-28 04:01:15,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-28 04:01:15,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:01:15,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414493768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:15,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:01:15,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-28 04:01:15,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347615009] [2024-11-28 04:01:15,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:15,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:01:15,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:15,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:01:15,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:01:16,139 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 97 [2024-11-28 04:01:16,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 120 transitions, 561 flow. Second operand has 16 states, 16 states have (on average 44.625) internal successors, (714), 16 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:16,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:16,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 97 [2024-11-28 04:01:16,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:17,514 INFO L124 PetriNetUnfolderBase]: 1364/3448 cut-off events. [2024-11-28 04:01:17,514 INFO L125 PetriNetUnfolderBase]: For 982/1003 co-relation queries the response was YES. [2024-11-28 04:01:17,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6735 conditions, 3448 events. 1364/3448 cut-off events. For 982/1003 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 28180 event pairs, 365 based on Foata normal form. 21/2960 useless extension candidates. Maximal degree in co-relation 6720. Up to 449 conditions per place. [2024-11-28 04:01:17,547 INFO L140 encePairwiseOnDemand]: 84/97 looper letters, 228 selfloop transitions, 37 changer transitions 0/297 dead transitions. [2024-11-28 04:01:17,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 297 transitions, 1832 flow [2024-11-28 04:01:17,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:01:17,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 04:01:17,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 812 transitions. [2024-11-28 04:01:17,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5580756013745705 [2024-11-28 04:01:17,552 INFO L175 Difference]: Start difference. First operand has 107 places, 120 transitions, 561 flow. Second operand 15 states and 812 transitions. [2024-11-28 04:01:17,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 297 transitions, 1832 flow [2024-11-28 04:01:17,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 297 transitions, 1640 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 04:01:17,566 INFO L231 Difference]: Finished difference. Result has 119 places, 133 transitions, 665 flow [2024-11-28 04:01:17,566 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=665, PETRI_PLACES=119, PETRI_TRANSITIONS=133} [2024-11-28 04:01:17,567 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 28 predicate places. [2024-11-28 04:01:17,567 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 133 transitions, 665 flow [2024-11-28 04:01:17,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 44.625) internal successors, (714), 16 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:17,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:17,568 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:17,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:01:17,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:01:17,773 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:17,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:17,774 INFO L85 PathProgramCache]: Analyzing trace with hash -33961680, now seen corresponding path program 1 times [2024-11-28 04:01:17,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:17,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721489303] [2024-11-28 04:01:17,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:17,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:17,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:01:17,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:17,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721489303] [2024-11-28 04:01:17,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721489303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:17,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:17,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:17,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996572308] [2024-11-28 04:01:17,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:17,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:01:17,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:17,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:01:17,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:01:17,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-28 04:01:17,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 133 transitions, 665 flow. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:17,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:17,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-28 04:01:17,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:18,723 INFO L124 PetriNetUnfolderBase]: 2209/5058 cut-off events. [2024-11-28 04:01:18,724 INFO L125 PetriNetUnfolderBase]: For 3244/3381 co-relation queries the response was YES. [2024-11-28 04:01:18,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10899 conditions, 5058 events. 2209/5058 cut-off events. For 3244/3381 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 42340 event pairs, 752 based on Foata normal form. 211/4486 useless extension candidates. Maximal degree in co-relation 10881. Up to 1868 conditions per place. [2024-11-28 04:01:18,756 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 149 selfloop transitions, 5 changer transitions 0/184 dead transitions. [2024-11-28 04:01:18,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 184 transitions, 1255 flow [2024-11-28 04:01:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:01:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:01:18,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-11-28 04:01:18,758 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6752577319587629 [2024-11-28 04:01:18,758 INFO L175 Difference]: Start difference. First operand has 119 places, 133 transitions, 665 flow. Second operand 4 states and 262 transitions. [2024-11-28 04:01:18,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 184 transitions, 1255 flow [2024-11-28 04:01:18,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 184 transitions, 1240 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-28 04:01:18,773 INFO L231 Difference]: Finished difference. Result has 122 places, 135 transitions, 692 flow [2024-11-28 04:01:18,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=692, PETRI_PLACES=122, PETRI_TRANSITIONS=135} [2024-11-28 04:01:18,774 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 31 predicate places. [2024-11-28 04:01:18,774 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 135 transitions, 692 flow [2024-11-28 04:01:18,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:18,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:18,775 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:18,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 04:01:18,775 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:18,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:18,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1441270800, now seen corresponding path program 1 times [2024-11-28 04:01:18,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:18,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358557] [2024-11-28 04:01:18,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:18,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:01:19,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:19,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358557] [2024-11-28 04:01:19,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:19,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595300185] [2024-11-28 04:01:19,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:19,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:19,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:19,485 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:19,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:01:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:19,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 04:01:19,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:19,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:01:20,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-28 04:01:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:01:20,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:20,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-28 04:01:20,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-28 04:01:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:01:20,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595300185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:20,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:01:20,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-28 04:01:20,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770777606] [2024-11-28 04:01:20,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:20,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:01:20,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:20,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:01:20,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:01:20,657 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 97 [2024-11-28 04:01:20,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 135 transitions, 692 flow. Second operand has 16 states, 16 states have (on average 42.6875) internal successors, (683), 16 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:20,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:20,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 97 [2024-11-28 04:01:20,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:22,182 INFO L124 PetriNetUnfolderBase]: 2035/4764 cut-off events. [2024-11-28 04:01:22,182 INFO L125 PetriNetUnfolderBase]: For 3432/3562 co-relation queries the response was YES. [2024-11-28 04:01:22,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10935 conditions, 4764 events. 2035/4764 cut-off events. For 3432/3562 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 39695 event pairs, 576 based on Foata normal form. 128/4437 useless extension candidates. Maximal degree in co-relation 10915. Up to 764 conditions per place. [2024-11-28 04:01:22,216 INFO L140 encePairwiseOnDemand]: 84/97 looper letters, 249 selfloop transitions, 37 changer transitions 0/315 dead transitions. [2024-11-28 04:01:22,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 315 transitions, 1990 flow [2024-11-28 04:01:22,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:01:22,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 04:01:22,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 781 transitions. [2024-11-28 04:01:22,221 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5367697594501718 [2024-11-28 04:01:22,221 INFO L175 Difference]: Start difference. First operand has 122 places, 135 transitions, 692 flow. Second operand 15 states and 781 transitions. [2024-11-28 04:01:22,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 315 transitions, 1990 flow [2024-11-28 04:01:22,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 315 transitions, 1990 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:01:22,242 INFO L231 Difference]: Finished difference. Result has 137 places, 138 transitions, 801 flow [2024-11-28 04:01:22,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=801, PETRI_PLACES=137, PETRI_TRANSITIONS=138} [2024-11-28 04:01:22,243 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 46 predicate places. [2024-11-28 04:01:22,243 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 138 transitions, 801 flow [2024-11-28 04:01:22,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 42.6875) internal successors, (683), 16 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:22,244 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:22,244 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:22,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:01:22,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:22,449 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:22,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:22,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1052810951, now seen corresponding path program 1 times [2024-11-28 04:01:22,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:22,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370662211] [2024-11-28 04:01:22,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:22,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:23,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:23,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370662211] [2024-11-28 04:01:23,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370662211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:23,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192424334] [2024-11-28 04:01:23,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:23,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:23,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:23,268 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:23,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:01:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:23,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:01:23,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:23,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:01:23,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:01:23,740 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:01:23,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 04:01:23,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-28 04:01:24,278 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 04:01:24,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-28 04:01:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:24,300 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:24,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:01:24,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-28 04:01:24,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:01:24,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2024-11-28 04:01:24,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-28 04:01:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:24,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192424334] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:24,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:01:24,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-28 04:01:24,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45058106] [2024-11-28 04:01:24,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:24,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:01:24,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:24,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:01:24,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=419, Unknown=2, NotChecked=0, Total=506 [2024-11-28 04:01:26,407 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 97 [2024-11-28 04:01:26,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 138 transitions, 801 flow. Second operand has 23 states, 23 states have (on average 35.391304347826086) internal successors, (814), 23 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:26,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:26,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 97 [2024-11-28 04:01:26,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:27,860 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (<= 0 c_~id_0~0) (forall ((v_ArrVal_350 (Array Int Int))) (< (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_350) c_~get_2~0.base) .cse0) 9223372039002259456)) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_128| Int)) (or (forall ((v_ArrVal_350 (Array Int Int))) (< (select (select (store |c_#memory_int#2| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_128| v_ArrVal_350) c_~get_2~0.base) .cse0) 9223372039002259456)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_128|) 0)))))) is different from false [2024-11-28 04:01:31,439 INFO L124 PetriNetUnfolderBase]: 9950/19158 cut-off events. [2024-11-28 04:01:31,439 INFO L125 PetriNetUnfolderBase]: For 21332/21852 co-relation queries the response was YES. [2024-11-28 04:01:31,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49632 conditions, 19158 events. 9950/19158 cut-off events. For 21332/21852 co-relation queries the response was YES. Maximal size of possible extension queue 918. Compared 171477 event pairs, 2214 based on Foata normal form. 420/17883 useless extension candidates. Maximal degree in co-relation 49609. Up to 3427 conditions per place. [2024-11-28 04:01:31,571 INFO L140 encePairwiseOnDemand]: 82/97 looper letters, 376 selfloop transitions, 61 changer transitions 0/463 dead transitions. [2024-11-28 04:01:31,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 463 transitions, 3540 flow [2024-11-28 04:01:31,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:01:31,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 04:01:31,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 936 transitions. [2024-11-28 04:01:31,574 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4386129334582943 [2024-11-28 04:01:31,574 INFO L175 Difference]: Start difference. First operand has 137 places, 138 transitions, 801 flow. Second operand 22 states and 936 transitions. [2024-11-28 04:01:31,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 463 transitions, 3540 flow [2024-11-28 04:01:31,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 463 transitions, 3359 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-11-28 04:01:31,692 INFO L231 Difference]: Finished difference. Result has 153 places, 177 transitions, 1233 flow [2024-11-28 04:01:31,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1233, PETRI_PLACES=153, PETRI_TRANSITIONS=177} [2024-11-28 04:01:31,693 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 62 predicate places. [2024-11-28 04:01:31,693 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 177 transitions, 1233 flow [2024-11-28 04:01:31,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 35.391304347826086) internal successors, (814), 23 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:31,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:31,694 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:31,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:01:31,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:31,895 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:31,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:31,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1729722954, now seen corresponding path program 1 times [2024-11-28 04:01:31,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:31,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666025742] [2024-11-28 04:01:31,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:31,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:01:31,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:31,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666025742] [2024-11-28 04:01:31,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666025742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:31,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:31,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:31,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838446741] [2024-11-28 04:01:31,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:31,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:01:31,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:31,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:01:31,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:01:32,016 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-28 04:01:32,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 177 transitions, 1233 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:32,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:32,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-28 04:01:32,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:34,315 INFO L124 PetriNetUnfolderBase]: 6227/15554 cut-off events. [2024-11-28 04:01:34,315 INFO L125 PetriNetUnfolderBase]: For 18188/18526 co-relation queries the response was YES. [2024-11-28 04:01:34,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37790 conditions, 15554 events. 6227/15554 cut-off events. For 18188/18526 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 164388 event pairs, 2363 based on Foata normal form. 378/14269 useless extension candidates. Maximal degree in co-relation 37763. Up to 5663 conditions per place. [2024-11-28 04:01:34,424 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 183 selfloop transitions, 11 changer transitions 0/225 dead transitions. [2024-11-28 04:01:34,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 225 transitions, 1879 flow [2024-11-28 04:01:34,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:01:34,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:01:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 261 transitions. [2024-11-28 04:01:34,428 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6726804123711341 [2024-11-28 04:01:34,428 INFO L175 Difference]: Start difference. First operand has 153 places, 177 transitions, 1233 flow. Second operand 4 states and 261 transitions. [2024-11-28 04:01:34,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 225 transitions, 1879 flow [2024-11-28 04:01:34,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 225 transitions, 1822 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-28 04:01:34,774 INFO L231 Difference]: Finished difference. Result has 149 places, 174 transitions, 1182 flow [2024-11-28 04:01:34,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1182, PETRI_PLACES=149, PETRI_TRANSITIONS=174} [2024-11-28 04:01:34,775 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 58 predicate places. [2024-11-28 04:01:34,775 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 174 transitions, 1182 flow [2024-11-28 04:01:34,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:34,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:34,775 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:34,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 04:01:34,775 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:34,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:34,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1729721929, now seen corresponding path program 1 times [2024-11-28 04:01:34,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:34,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722653341] [2024-11-28 04:01:34,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:34,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:35,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:35,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722653341] [2024-11-28 04:01:35,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722653341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:35,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569966721] [2024-11-28 04:01:35,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:35,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:35,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:35,589 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:35,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:01:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:35,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 04:01:35,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:35,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:01:35,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:01:36,058 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:01:36,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 04:01:36,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-28 04:01:36,441 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 04:01:36,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-28 04:01:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:36,491 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:36,571 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_402 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_402) c_~get_2~0.base) (+ (* c_~id_0~0 4) c_~get_2~0.offset))))) is different from false [2024-11-28 04:01:36,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:01:36,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2024-11-28 04:01:36,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:01:36,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2024-11-28 04:01:36,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2024-11-28 04:01:36,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2024-11-28 04:01:36,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569966721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:36,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:01:36,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-28 04:01:36,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442844038] [2024-11-28 04:01:36,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:36,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 04:01:36,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:36,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 04:01:36,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=464, Unknown=1, NotChecked=44, Total=600 [2024-11-28 04:01:37,004 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 97 [2024-11-28 04:01:37,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 174 transitions, 1182 flow. Second operand has 25 states, 25 states have (on average 33.04) internal successors, (826), 25 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:37,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:37,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 97 [2024-11-28 04:01:37,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:44,047 INFO L124 PetriNetUnfolderBase]: 9507/18222 cut-off events. [2024-11-28 04:01:44,047 INFO L125 PetriNetUnfolderBase]: For 19736/20609 co-relation queries the response was YES. [2024-11-28 04:01:44,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48801 conditions, 18222 events. 9507/18222 cut-off events. For 19736/20609 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 160399 event pairs, 2024 based on Foata normal form. 359/17412 useless extension candidates. Maximal degree in co-relation 48775. Up to 2881 conditions per place. [2024-11-28 04:01:44,178 INFO L140 encePairwiseOnDemand]: 80/97 looper letters, 550 selfloop transitions, 95 changer transitions 0/666 dead transitions. [2024-11-28 04:01:44,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 666 transitions, 4732 flow [2024-11-28 04:01:44,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 04:01:44,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-28 04:01:44,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1517 transitions. [2024-11-28 04:01:44,184 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43442153493699887 [2024-11-28 04:01:44,185 INFO L175 Difference]: Start difference. First operand has 149 places, 174 transitions, 1182 flow. Second operand 36 states and 1517 transitions. [2024-11-28 04:01:44,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 666 transitions, 4732 flow [2024-11-28 04:01:44,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 666 transitions, 4681 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:01:44,323 INFO L231 Difference]: Finished difference. Result has 190 places, 212 transitions, 1683 flow [2024-11-28 04:01:44,323 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1683, PETRI_PLACES=190, PETRI_TRANSITIONS=212} [2024-11-28 04:01:44,324 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 99 predicate places. [2024-11-28 04:01:44,324 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 212 transitions, 1683 flow [2024-11-28 04:01:44,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 33.04) internal successors, (826), 25 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:44,325 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:44,325 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:44,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:01:44,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 04:01:44,529 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:44,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:44,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1722568244, now seen corresponding path program 1 times [2024-11-28 04:01:44,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:44,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791113441] [2024-11-28 04:01:44,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:44,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:45,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:45,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791113441] [2024-11-28 04:01:45,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791113441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:45,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818405199] [2024-11-28 04:01:45,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:45,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:45,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:45,400 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:45,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:01:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:45,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:01:45,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:45,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:01:45,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:01:45,857 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:01:45,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 04:01:45,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-28 04:01:46,205 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 04:01:46,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-28 04:01:46,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:46,220 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:46,468 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:01:46,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2024-11-28 04:01:46,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:01:46,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2024-11-28 04:01:46,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2024-11-28 04:01:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:46,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818405199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:46,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:01:46,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-28 04:01:46,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862130679] [2024-11-28 04:01:46,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:46,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:01:46,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:46,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:01:46,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=419, Unknown=1, NotChecked=0, Total=506 [2024-11-28 04:01:46,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 97 [2024-11-28 04:01:46,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 212 transitions, 1683 flow. Second operand has 23 states, 23 states have (on average 35.391304347826086) internal successors, (814), 23 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:46,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:46,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 97 [2024-11-28 04:01:46,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:48,639 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (forall ((v_ArrVal_438 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_438) c_~get_2~0.base) .cse0)))) (<= 0 c_~id_0~0) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_134| Int)) (or (forall ((v_ArrVal_438 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#2| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_134| v_ArrVal_438) c_~get_2~0.base) .cse0) 4294967296))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_134|) 0)))))) is different from false [2024-11-28 04:01:51,884 INFO L124 PetriNetUnfolderBase]: 9667/18483 cut-off events. [2024-11-28 04:01:51,884 INFO L125 PetriNetUnfolderBase]: For 38362/38869 co-relation queries the response was YES. [2024-11-28 04:01:51,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52933 conditions, 18483 events. 9667/18483 cut-off events. For 38362/38869 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 162859 event pairs, 2622 based on Foata normal form. 314/17457 useless extension candidates. Maximal degree in co-relation 52898. Up to 3878 conditions per place. [2024-11-28 04:01:51,997 INFO L140 encePairwiseOnDemand]: 82/97 looper letters, 374 selfloop transitions, 61 changer transitions 0/463 dead transitions. [2024-11-28 04:01:51,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 463 transitions, 4018 flow [2024-11-28 04:01:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:01:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 04:01:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 921 transitions. [2024-11-28 04:01:52,000 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43158388003748827 [2024-11-28 04:01:52,000 INFO L175 Difference]: Start difference. First operand has 190 places, 212 transitions, 1683 flow. Second operand 22 states and 921 transitions. [2024-11-28 04:01:52,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 463 transitions, 4018 flow [2024-11-28 04:01:52,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 463 transitions, 3889 flow, removed 15 selfloop flow, removed 14 redundant places. [2024-11-28 04:01:52,125 INFO L231 Difference]: Finished difference. Result has 198 places, 215 transitions, 1751 flow [2024-11-28 04:01:52,126 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1751, PETRI_PLACES=198, PETRI_TRANSITIONS=215} [2024-11-28 04:01:52,126 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 107 predicate places. [2024-11-28 04:01:52,126 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 215 transitions, 1751 flow [2024-11-28 04:01:52,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 35.391304347826086) internal successors, (814), 23 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:52,127 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:01:52,127 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:52,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:01:52,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:52,327 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:01:52,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:52,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2081773363, now seen corresponding path program 1 times [2024-11-28 04:01:52,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:52,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865544026] [2024-11-28 04:01:52,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:52,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:53,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:53,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865544026] [2024-11-28 04:01:53,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865544026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:53,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252557475] [2024-11-28 04:01:53,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:53,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:53,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:53,067 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:53,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:01:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:53,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:01:53,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:53,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:01:53,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:01:53,496 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:01:53,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 04:01:53,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-28 04:01:53,811 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 04:01:53,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-28 04:01:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:53,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:54,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:01:54,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-28 04:01:54,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:01:54,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2024-11-28 04:01:54,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-28 04:01:54,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:54,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252557475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:54,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:01:54,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2024-11-28 04:01:54,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281494656] [2024-11-28 04:01:54,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:54,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:01:54,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:54,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:01:54,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=546, Unknown=7, NotChecked=0, Total=650 [2024-11-28 04:01:54,798 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 97 [2024-11-28 04:01:54,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 215 transitions, 1751 flow. Second operand has 26 states, 26 states have (on average 33.0) internal successors, (858), 26 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:54,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:01:54,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 97 [2024-11-28 04:01:54,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:01:59,754 INFO L124 PetriNetUnfolderBase]: 9898/18455 cut-off events. [2024-11-28 04:01:59,755 INFO L125 PetriNetUnfolderBase]: For 31675/32244 co-relation queries the response was YES. [2024-11-28 04:01:59,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54874 conditions, 18455 events. 9898/18455 cut-off events. For 31675/32244 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 158710 event pairs, 2556 based on Foata normal form. 938/18293 useless extension candidates. Maximal degree in co-relation 54838. Up to 3883 conditions per place. [2024-11-28 04:01:59,928 INFO L140 encePairwiseOnDemand]: 77/97 looper letters, 409 selfloop transitions, 105 changer transitions 18/560 dead transitions. [2024-11-28 04:01:59,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 560 transitions, 4452 flow [2024-11-28 04:01:59,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 04:01:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-28 04:01:59,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1336 transitions. [2024-11-28 04:01:59,931 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41736957200874725 [2024-11-28 04:01:59,931 INFO L175 Difference]: Start difference. First operand has 198 places, 215 transitions, 1751 flow. Second operand 33 states and 1336 transitions. [2024-11-28 04:01:59,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 560 transitions, 4452 flow [2024-11-28 04:02:00,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 560 transitions, 4273 flow, removed 2 selfloop flow, removed 17 redundant places. [2024-11-28 04:02:00,089 INFO L231 Difference]: Finished difference. Result has 220 places, 242 transitions, 2114 flow [2024-11-28 04:02:00,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2114, PETRI_PLACES=220, PETRI_TRANSITIONS=242} [2024-11-28 04:02:00,089 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 129 predicate places. [2024-11-28 04:02:00,090 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 242 transitions, 2114 flow [2024-11-28 04:02:00,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 33.0) internal successors, (858), 26 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:00,090 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:00,090 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:00,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:02:00,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:00,292 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:02:00,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:00,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1860008123, now seen corresponding path program 1 times [2024-11-28 04:02:00,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:00,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124488502] [2024-11-28 04:02:00,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:00,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:02:00,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:00,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124488502] [2024-11-28 04:02:00,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124488502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:00,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526198642] [2024-11-28 04:02:00,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:00,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:00,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:00,955 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:00,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:02:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:01,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:02:01,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:01,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:02:01,581 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 04:02:01,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-28 04:02:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:02:01,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:01,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-28 04:02:01,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-28 04:02:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:02:01,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526198642] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:01,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:01,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-28 04:02:01,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877744727] [2024-11-28 04:02:01,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:01,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:02:01,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:01,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:02:01,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:02:02,494 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 97 [2024-11-28 04:02:02,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 242 transitions, 2114 flow. Second operand has 19 states, 19 states have (on average 39.36842105263158) internal successors, (748), 19 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:02,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:02,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 97 [2024-11-28 04:02:02,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:05,537 INFO L124 PetriNetUnfolderBase]: 8635/16950 cut-off events. [2024-11-28 04:02:05,537 INFO L125 PetriNetUnfolderBase]: For 51710/52921 co-relation queries the response was YES. [2024-11-28 04:02:05,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53920 conditions, 16950 events. 8635/16950 cut-off events. For 51710/52921 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 151188 event pairs, 2118 based on Foata normal form. 522/16681 useless extension candidates. Maximal degree in co-relation 53878. Up to 2873 conditions per place. [2024-11-28 04:02:05,699 INFO L140 encePairwiseOnDemand]: 81/97 looper letters, 698 selfloop transitions, 89 changer transitions 0/832 dead transitions. [2024-11-28 04:02:05,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 832 transitions, 7898 flow [2024-11-28 04:02:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:02:05,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 04:02:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1076 transitions. [2024-11-28 04:02:05,702 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5042174320524836 [2024-11-28 04:02:05,702 INFO L175 Difference]: Start difference. First operand has 220 places, 242 transitions, 2114 flow. Second operand 22 states and 1076 transitions. [2024-11-28 04:02:05,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 832 transitions, 7898 flow [2024-11-28 04:02:05,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 832 transitions, 7718 flow, removed 25 selfloop flow, removed 15 redundant places. [2024-11-28 04:02:05,897 INFO L231 Difference]: Finished difference. Result has 232 places, 276 transitions, 2521 flow [2024-11-28 04:02:05,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2012, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2521, PETRI_PLACES=232, PETRI_TRANSITIONS=276} [2024-11-28 04:02:05,898 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 141 predicate places. [2024-11-28 04:02:05,898 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 276 transitions, 2521 flow [2024-11-28 04:02:05,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 39.36842105263158) internal successors, (748), 19 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:05,899 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:05,899 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:05,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 04:02:06,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 04:02:06,099 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:02:06,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:06,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1057783023, now seen corresponding path program 1 times [2024-11-28 04:02:06,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:06,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285415093] [2024-11-28 04:02:06,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:06,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:06,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:02:06,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:06,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285415093] [2024-11-28 04:02:06,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285415093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:06,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:06,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:02:06,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123086990] [2024-11-28 04:02:06,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:06,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:02:06,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:06,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:02:06,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:02:06,253 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 97 [2024-11-28 04:02:06,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 276 transitions, 2521 flow. Second operand has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:06,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:06,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 97 [2024-11-28 04:02:06,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:08,161 INFO L124 PetriNetUnfolderBase]: 7136/15293 cut-off events. [2024-11-28 04:02:08,161 INFO L125 PetriNetUnfolderBase]: For 43833/44033 co-relation queries the response was YES. [2024-11-28 04:02:08,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50635 conditions, 15293 events. 7136/15293 cut-off events. For 43833/44033 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 142874 event pairs, 2752 based on Foata normal form. 196/14954 useless extension candidates. Maximal degree in co-relation 50586. Up to 6487 conditions per place. [2024-11-28 04:02:08,317 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 358 selfloop transitions, 37 changer transitions 60/493 dead transitions. [2024-11-28 04:02:08,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 493 transitions, 5289 flow [2024-11-28 04:02:08,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:02:08,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:02:08,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 370 transitions. [2024-11-28 04:02:08,319 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6357388316151202 [2024-11-28 04:02:08,319 INFO L175 Difference]: Start difference. First operand has 232 places, 276 transitions, 2521 flow. Second operand 6 states and 370 transitions. [2024-11-28 04:02:08,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 493 transitions, 5289 flow [2024-11-28 04:02:08,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 493 transitions, 5073 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-11-28 04:02:08,643 INFO L231 Difference]: Finished difference. Result has 227 places, 263 transitions, 2346 flow [2024-11-28 04:02:08,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2346, PETRI_PLACES=227, PETRI_TRANSITIONS=263} [2024-11-28 04:02:08,644 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 136 predicate places. [2024-11-28 04:02:08,644 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 263 transitions, 2346 flow [2024-11-28 04:02:08,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:08,645 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:08,645 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:08,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 04:02:08,645 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:02:08,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:08,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1825678103, now seen corresponding path program 1 times [2024-11-28 04:02:08,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:08,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671649744] [2024-11-28 04:02:08,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:08,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:09,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:02:09,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:09,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671649744] [2024-11-28 04:02:09,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671649744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:09,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770928216] [2024-11-28 04:02:09,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:09,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:09,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:09,257 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:09,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:02:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:09,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:02:09,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:09,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:02:09,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:02:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:02:09,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:09,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-28 04:02:09,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-28 04:02:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:02:09,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770928216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:09,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:09,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2024-11-28 04:02:09,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891244077] [2024-11-28 04:02:09,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:09,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:02:09,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:09,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:02:09,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:02:10,532 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 97 [2024-11-28 04:02:10,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 263 transitions, 2346 flow. Second operand has 23 states, 23 states have (on average 35.78260869565217) internal successors, (823), 23 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:10,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:10,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 97 [2024-11-28 04:02:10,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:14,855 INFO L124 PetriNetUnfolderBase]: 12652/25296 cut-off events. [2024-11-28 04:02:14,855 INFO L125 PetriNetUnfolderBase]: For 94300/95464 co-relation queries the response was YES. [2024-11-28 04:02:15,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88570 conditions, 25296 events. 12652/25296 cut-off events. For 94300/95464 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 243053 event pairs, 3155 based on Foata normal form. 1353/25752 useless extension candidates. Maximal degree in co-relation 88521. Up to 3456 conditions per place. [2024-11-28 04:02:15,065 INFO L140 encePairwiseOnDemand]: 73/97 looper letters, 876 selfloop transitions, 130 changer transitions 167/1217 dead transitions. [2024-11-28 04:02:15,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 1217 transitions, 12886 flow [2024-11-28 04:02:15,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 04:02:15,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-28 04:02:15,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1428 transitions. [2024-11-28 04:02:15,068 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4329896907216495 [2024-11-28 04:02:15,068 INFO L175 Difference]: Start difference. First operand has 227 places, 263 transitions, 2346 flow. Second operand 34 states and 1428 transitions. [2024-11-28 04:02:15,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 1217 transitions, 12886 flow [2024-11-28 04:02:16,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 1217 transitions, 12357 flow, removed 93 selfloop flow, removed 3 redundant places. [2024-11-28 04:02:16,039 INFO L231 Difference]: Finished difference. Result has 267 places, 320 transitions, 3150 flow [2024-11-28 04:02:16,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2291, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3150, PETRI_PLACES=267, PETRI_TRANSITIONS=320} [2024-11-28 04:02:16,040 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 176 predicate places. [2024-11-28 04:02:16,040 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 320 transitions, 3150 flow [2024-11-28 04:02:16,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 35.78260869565217) internal successors, (823), 23 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:16,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:16,041 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:16,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:02:16,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:02:16,245 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:02:16,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:16,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1060256967, now seen corresponding path program 2 times [2024-11-28 04:02:16,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:16,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33631309] [2024-11-28 04:02:16,246 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:16,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:16,272 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:02:16,272 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:02:16,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:16,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33631309] [2024-11-28 04:02:16,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33631309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:16,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478398433] [2024-11-28 04:02:16,534 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:16,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:16,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:16,536 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:16,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:02:16,693 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:02:16,693 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:16,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:02:16,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:02:16,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:02:17,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478398433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:17,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:17,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2024-11-28 04:02:17,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208792035] [2024-11-28 04:02:17,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:17,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 04:02:17,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:17,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 04:02:17,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:02:17,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 97 [2024-11-28 04:02:17,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 320 transitions, 3150 flow. Second operand has 28 states, 28 states have (on average 42.857142857142854) internal successors, (1200), 28 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:17,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:17,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 97 [2024-11-28 04:02:17,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:19,704 INFO L124 PetriNetUnfolderBase]: 4774/11918 cut-off events. [2024-11-28 04:02:19,704 INFO L125 PetriNetUnfolderBase]: For 45275/45651 co-relation queries the response was YES. [2024-11-28 04:02:19,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43838 conditions, 11918 events. 4774/11918 cut-off events. For 45275/45651 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 115440 event pairs, 3622 based on Foata normal form. 172/11742 useless extension candidates. Maximal degree in co-relation 43778. Up to 2736 conditions per place. [2024-11-28 04:02:19,830 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 222 selfloop transitions, 102 changer transitions 2/394 dead transitions. [2024-11-28 04:02:19,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 394 transitions, 3984 flow [2024-11-28 04:02:19,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:02:19,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 04:02:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 940 transitions. [2024-11-28 04:02:19,832 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4845360824742268 [2024-11-28 04:02:19,832 INFO L175 Difference]: Start difference. First operand has 267 places, 320 transitions, 3150 flow. Second operand 20 states and 940 transitions. [2024-11-28 04:02:19,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 394 transitions, 3984 flow [2024-11-28 04:02:20,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 394 transitions, 3812 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-11-28 04:02:20,243 INFO L231 Difference]: Finished difference. Result has 273 places, 325 transitions, 3019 flow [2024-11-28 04:02:20,244 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2611, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3019, PETRI_PLACES=273, PETRI_TRANSITIONS=325} [2024-11-28 04:02:20,245 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 182 predicate places. [2024-11-28 04:02:20,245 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 325 transitions, 3019 flow [2024-11-28 04:02:20,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 42.857142857142854) internal successors, (1200), 28 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:20,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:20,245 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:20,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 04:02:20,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 04:02:20,446 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:02:20,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:20,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1708764577, now seen corresponding path program 1 times [2024-11-28 04:02:20,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:20,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805988909] [2024-11-28 04:02:20,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:20,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:02:20,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:20,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805988909] [2024-11-28 04:02:20,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805988909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:20,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:20,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:02:20,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216857102] [2024-11-28 04:02:20,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:20,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:02:20,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:20,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:02:20,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:02:20,558 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-28 04:02:20,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 325 transitions, 3019 flow. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:20,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:20,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-28 04:02:20,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:22,981 INFO L124 PetriNetUnfolderBase]: 6314/13466 cut-off events. [2024-11-28 04:02:22,981 INFO L125 PetriNetUnfolderBase]: For 49984/50586 co-relation queries the response was YES. [2024-11-28 04:02:23,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48946 conditions, 13466 events. 6314/13466 cut-off events. For 49984/50586 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 118391 event pairs, 2607 based on Foata normal form. 492/13721 useless extension candidates. Maximal degree in co-relation 48888. Up to 5900 conditions per place. [2024-11-28 04:02:23,142 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 314 selfloop transitions, 16 changer transitions 85/461 dead transitions. [2024-11-28 04:02:23,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 461 transitions, 5035 flow [2024-11-28 04:02:23,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:02:23,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:02:23,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 257 transitions. [2024-11-28 04:02:23,143 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6623711340206185 [2024-11-28 04:02:23,143 INFO L175 Difference]: Start difference. First operand has 273 places, 325 transitions, 3019 flow. Second operand 4 states and 257 transitions. [2024-11-28 04:02:23,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 461 transitions, 5035 flow [2024-11-28 04:02:23,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 461 transitions, 4906 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-11-28 04:02:23,638 INFO L231 Difference]: Finished difference. Result has 260 places, 278 transitions, 2486 flow [2024-11-28 04:02:23,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2770, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2486, PETRI_PLACES=260, PETRI_TRANSITIONS=278} [2024-11-28 04:02:23,639 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 169 predicate places. [2024-11-28 04:02:23,639 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 278 transitions, 2486 flow [2024-11-28 04:02:23,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:23,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:23,640 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:23,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 04:02:23,640 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:02:23,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:23,640 INFO L85 PathProgramCache]: Analyzing trace with hash 2134433913, now seen corresponding path program 2 times [2024-11-28 04:02:23,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:23,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838482405] [2024-11-28 04:02:23,641 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:23,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:23,667 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:02:23,667 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:02:24,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:24,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838482405] [2024-11-28 04:02:24,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838482405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:24,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516295843] [2024-11-28 04:02:24,005 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:24,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:24,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:24,009 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:24,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:02:24,198 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:02:24,198 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:24,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:02:24,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:02:24,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:02:24,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516295843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:24,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:24,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2024-11-28 04:02:24,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182376529] [2024-11-28 04:02:24,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:24,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 04:02:24,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:24,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 04:02:24,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:02:24,948 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 97 [2024-11-28 04:02:24,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 278 transitions, 2486 flow. Second operand has 28 states, 28 states have (on average 42.92857142857143) internal successors, (1202), 28 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:24,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:24,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 97 [2024-11-28 04:02:24,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:26,917 INFO L124 PetriNetUnfolderBase]: 2940/7301 cut-off events. [2024-11-28 04:02:26,917 INFO L125 PetriNetUnfolderBase]: For 27660/28081 co-relation queries the response was YES. [2024-11-28 04:02:26,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27541 conditions, 7301 events. 2940/7301 cut-off events. For 27660/28081 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 64424 event pairs, 2132 based on Foata normal form. 162/7369 useless extension candidates. Maximal degree in co-relation 27483. Up to 2744 conditions per place. [2024-11-28 04:02:26,963 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 196 selfloop transitions, 113 changer transitions 23/387 dead transitions. [2024-11-28 04:02:26,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 387 transitions, 3881 flow [2024-11-28 04:02:26,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:02:26,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 04:02:26,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 948 transitions. [2024-11-28 04:02:26,965 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.488659793814433 [2024-11-28 04:02:26,965 INFO L175 Difference]: Start difference. First operand has 260 places, 278 transitions, 2486 flow. Second operand 20 states and 948 transitions. [2024-11-28 04:02:26,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 387 transitions, 3881 flow [2024-11-28 04:02:27,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 387 transitions, 3820 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-11-28 04:02:27,126 INFO L231 Difference]: Finished difference. Result has 271 places, 320 transitions, 3120 flow [2024-11-28 04:02:27,127 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2431, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3120, PETRI_PLACES=271, PETRI_TRANSITIONS=320} [2024-11-28 04:02:27,127 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 180 predicate places. [2024-11-28 04:02:27,127 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 320 transitions, 3120 flow [2024-11-28 04:02:27,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 42.92857142857143) internal successors, (1202), 28 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:27,128 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:27,128 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:27,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 04:02:27,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-28 04:02:27,329 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:02:27,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:27,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1111964089, now seen corresponding path program 3 times [2024-11-28 04:02:27,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:27,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557996091] [2024-11-28 04:02:27,329 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:02:27,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:27,358 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:02:27,358 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:02:27,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:27,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557996091] [2024-11-28 04:02:27,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557996091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:27,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007552081] [2024-11-28 04:02:27,629 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:02:27,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:27,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:27,632 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:27,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:02:27,793 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:02:27,793 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:27,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 04:02:27,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:27,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:02:27,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-28 04:02:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:02:27,984 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:02:27,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007552081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:27,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:02:27,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-11-28 04:02:27,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599525173] [2024-11-28 04:02:27,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:27,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:02:27,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:27,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:02:27,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:02:28,174 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 97 [2024-11-28 04:02:28,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 320 transitions, 3120 flow. Second operand has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 7 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:28,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:28,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 97 [2024-11-28 04:02:28,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:29,333 INFO L124 PetriNetUnfolderBase]: 3041/7255 cut-off events. [2024-11-28 04:02:29,333 INFO L125 PetriNetUnfolderBase]: For 26788/27374 co-relation queries the response was YES. [2024-11-28 04:02:29,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27044 conditions, 7255 events. 3041/7255 cut-off events. For 26788/27374 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 62372 event pairs, 650 based on Foata normal form. 235/7482 useless extension candidates. Maximal degree in co-relation 26986. Up to 2924 conditions per place. [2024-11-28 04:02:29,379 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 254 selfloop transitions, 59 changer transitions 0/364 dead transitions. [2024-11-28 04:02:29,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 364 transitions, 4103 flow [2024-11-28 04:02:29,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:02:29,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:02:29,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 405 transitions. [2024-11-28 04:02:29,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5964653902798233 [2024-11-28 04:02:29,381 INFO L175 Difference]: Start difference. First operand has 271 places, 320 transitions, 3120 flow. Second operand 7 states and 405 transitions. [2024-11-28 04:02:29,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 364 transitions, 4103 flow [2024-11-28 04:02:29,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 364 transitions, 3972 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-28 04:02:29,503 INFO L231 Difference]: Finished difference. Result has 264 places, 317 transitions, 3084 flow [2024-11-28 04:02:29,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3084, PETRI_PLACES=264, PETRI_TRANSITIONS=317} [2024-11-28 04:02:29,503 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 173 predicate places. [2024-11-28 04:02:29,503 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 317 transitions, 3084 flow [2024-11-28 04:02:29,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 7 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:29,504 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:29,504 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:29,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:02:29,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-28 04:02:29,708 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:02:29,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:29,709 INFO L85 PathProgramCache]: Analyzing trace with hash -111179056, now seen corresponding path program 2 times [2024-11-28 04:02:29,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:29,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949940987] [2024-11-28 04:02:29,709 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:29,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:29,744 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:02:29,744 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:02:30,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:30,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949940987] [2024-11-28 04:02:30,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949940987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:30,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712052880] [2024-11-28 04:02:30,212 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:30,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:30,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:30,214 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:30,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:02:30,414 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:02:30,414 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:30,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 04:02:30,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:30,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:02:31,234 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 04:02:31,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-28 04:02:31,270 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:02:31,270 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:31,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-28 04:02:31,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-28 04:02:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:02:32,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712052880] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:32,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:32,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 17, 17] total 37 [2024-11-28 04:02:32,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800929548] [2024-11-28 04:02:32,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:32,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 04:02:32,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:32,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 04:02:32,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1239, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 04:02:33,405 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 97 [2024-11-28 04:02:33,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 317 transitions, 3084 flow. Second operand has 38 states, 38 states have (on average 37.89473684210526) internal successors, (1440), 38 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:33,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:33,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 97 [2024-11-28 04:02:33,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:36,968 INFO L124 PetriNetUnfolderBase]: 4961/11397 cut-off events. [2024-11-28 04:02:36,969 INFO L125 PetriNetUnfolderBase]: For 46215/47367 co-relation queries the response was YES. [2024-11-28 04:02:37,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43062 conditions, 11397 events. 4961/11397 cut-off events. For 46215/47367 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 103700 event pairs, 1040 based on Foata normal form. 471/11858 useless extension candidates. Maximal degree in co-relation 43003. Up to 1836 conditions per place. [2024-11-28 04:02:37,060 INFO L140 encePairwiseOnDemand]: 84/97 looper letters, 306 selfloop transitions, 104 changer transitions 25/484 dead transitions. [2024-11-28 04:02:37,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 484 transitions, 5176 flow [2024-11-28 04:02:37,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:02:37,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 04:02:37,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 979 transitions. [2024-11-28 04:02:37,063 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43881667413715825 [2024-11-28 04:02:37,063 INFO L175 Difference]: Start difference. First operand has 264 places, 317 transitions, 3084 flow. Second operand 23 states and 979 transitions. [2024-11-28 04:02:37,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 484 transitions, 5176 flow [2024-11-28 04:02:37,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 484 transitions, 5026 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-28 04:02:37,330 INFO L231 Difference]: Finished difference. Result has 279 places, 323 transitions, 3239 flow [2024-11-28 04:02:37,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2957, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3239, PETRI_PLACES=279, PETRI_TRANSITIONS=323} [2024-11-28 04:02:37,331 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 188 predicate places. [2024-11-28 04:02:37,331 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 323 transitions, 3239 flow [2024-11-28 04:02:37,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 37.89473684210526) internal successors, (1440), 38 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:37,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:37,331 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:37,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:02:37,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-28 04:02:37,532 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:02:37,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:37,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1238357479, now seen corresponding path program 3 times [2024-11-28 04:02:37,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:37,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093968569] [2024-11-28 04:02:37,532 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:02:37,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:37,609 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 04:02:37,609 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:02:38,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:38,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093968569] [2024-11-28 04:02:38,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093968569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:38,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052413119] [2024-11-28 04:02:38,318 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:02:38,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:38,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:38,324 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:38,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:02:38,696 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 04:02:38,697 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:38,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:02:38,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:38,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:02:38,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:02:38,912 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:02:38,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 04:02:38,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-28 04:02:39,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-28 04:02:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:02:39,018 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:39,093 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_804 (Array Int Int))) (< (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_804) c_~get_2~0.base) (+ (* c_~id_0~0 4) c_~get_2~0.offset)) 9223372039002259456)) is different from false [2024-11-28 04:02:39,254 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:02:39,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2024-11-28 04:02:39,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:02:39,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-28 04:02:39,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-28 04:02:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 5 not checked. [2024-11-28 04:02:39,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052413119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:39,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:39,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2024-11-28 04:02:39,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339233422] [2024-11-28 04:02:39,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:39,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:02:39,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:39,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:02:39,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=384, Unknown=1, NotChecked=40, Total=506 [2024-11-28 04:02:39,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 97 [2024-11-28 04:02:39,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 323 transitions, 3239 flow. Second operand has 23 states, 23 states have (on average 35.78260869565217) internal successors, (823), 23 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:39,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:39,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 97 [2024-11-28 04:02:39,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:42,234 INFO L124 PetriNetUnfolderBase]: 7418/14204 cut-off events. [2024-11-28 04:02:42,234 INFO L125 PetriNetUnfolderBase]: For 57749/58782 co-relation queries the response was YES. [2024-11-28 04:02:42,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54430 conditions, 14204 events. 7418/14204 cut-off events. For 57749/58782 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 116719 event pairs, 1104 based on Foata normal form. 417/14593 useless extension candidates. Maximal degree in co-relation 54370. Up to 9240 conditions per place. [2024-11-28 04:02:42,393 INFO L140 encePairwiseOnDemand]: 82/97 looper letters, 263 selfloop transitions, 83 changer transitions 0/381 dead transitions. [2024-11-28 04:02:42,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 381 transitions, 4507 flow [2024-11-28 04:02:42,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:02:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:02:42,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 383 transitions. [2024-11-28 04:02:42,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39484536082474225 [2024-11-28 04:02:42,396 INFO L175 Difference]: Start difference. First operand has 279 places, 323 transitions, 3239 flow. Second operand 10 states and 383 transitions. [2024-11-28 04:02:42,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 381 transitions, 4507 flow [2024-11-28 04:02:42,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 381 transitions, 4321 flow, removed 11 selfloop flow, removed 19 redundant places. [2024-11-28 04:02:42,870 INFO L231 Difference]: Finished difference. Result has 267 places, 320 transitions, 3220 flow [2024-11-28 04:02:42,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=3054, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3220, PETRI_PLACES=267, PETRI_TRANSITIONS=320} [2024-11-28 04:02:42,872 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 176 predicate places. [2024-11-28 04:02:42,872 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 320 transitions, 3220 flow [2024-11-28 04:02:42,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 35.78260869565217) internal successors, (823), 23 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:42,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:42,873 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:42,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 04:02:43,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-28 04:02:43,073 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:02:43,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:43,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1544175401, now seen corresponding path program 2 times [2024-11-28 04:02:43,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:43,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10871846] [2024-11-28 04:02:43,074 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:43,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:43,135 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:02:43,135 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:44,007 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:02:44,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:44,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10871846] [2024-11-28 04:02:44,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10871846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:44,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554181401] [2024-11-28 04:02:44,008 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:44,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:44,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:44,010 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:44,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:02:44,179 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:02:44,179 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:44,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 04:02:44,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:44,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:02:44,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:02:44,442 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:02:44,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 04:02:44,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-28 04:02:45,065 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 04:02:45,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-28 04:02:45,142 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:02:45,142 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:45,766 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:02:45,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2024-11-28 04:02:45,775 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:02:45,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2024-11-28 04:02:45,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2024-11-28 04:02:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:02:46,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554181401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:46,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:46,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20, 20] total 45 [2024-11-28 04:02:46,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718578420] [2024-11-28 04:02:46,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:46,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-28 04:02:46,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:46,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-28 04:02:46,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1856, Unknown=1, NotChecked=0, Total=2070 [2024-11-28 04:02:47,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 97 [2024-11-28 04:02:47,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 320 transitions, 3220 flow. Second operand has 46 states, 46 states have (on average 26.369565217391305) internal successors, (1213), 46 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:47,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:47,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 97 [2024-11-28 04:02:47,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:54,443 INFO L124 PetriNetUnfolderBase]: 10636/19970 cut-off events. [2024-11-28 04:02:54,443 INFO L125 PetriNetUnfolderBase]: For 72091/74439 co-relation queries the response was YES. [2024-11-28 04:02:54,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75621 conditions, 19970 events. 10636/19970 cut-off events. For 72091/74439 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 168448 event pairs, 1560 based on Foata normal form. 1174/21090 useless extension candidates. Maximal degree in co-relation 75561. Up to 2928 conditions per place. [2024-11-28 04:02:54,613 INFO L140 encePairwiseOnDemand]: 81/97 looper letters, 749 selfloop transitions, 115 changer transitions 13/906 dead transitions. [2024-11-28 04:02:54,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 906 transitions, 9378 flow [2024-11-28 04:02:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 04:02:54,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-28 04:02:54,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1206 transitions. [2024-11-28 04:02:54,615 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34536082474226804 [2024-11-28 04:02:54,616 INFO L175 Difference]: Start difference. First operand has 267 places, 320 transitions, 3220 flow. Second operand 36 states and 1206 transitions. [2024-11-28 04:02:54,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 906 transitions, 9378 flow [2024-11-28 04:02:55,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 906 transitions, 8852 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-11-28 04:02:55,291 INFO L231 Difference]: Finished difference. Result has 288 places, 342 transitions, 3474 flow [2024-11-28 04:02:55,291 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=3002, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3474, PETRI_PLACES=288, PETRI_TRANSITIONS=342} [2024-11-28 04:02:55,292 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 197 predicate places. [2024-11-28 04:02:55,292 INFO L471 AbstractCegarLoop]: Abstraction has has 288 places, 342 transitions, 3474 flow [2024-11-28 04:02:55,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 26.369565217391305) internal successors, (1213), 46 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:55,293 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:55,293 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:55,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 04:02:55,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 04:02:55,493 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:02:55,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:55,494 INFO L85 PathProgramCache]: Analyzing trace with hash 265593172, now seen corresponding path program 2 times [2024-11-28 04:02:55,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:55,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452115890] [2024-11-28 04:02:55,494 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:55,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:55,530 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:02:55,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:56,042 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:02:56,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:56,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452115890] [2024-11-28 04:02:56,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452115890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:56,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544616513] [2024-11-28 04:02:56,043 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:56,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:56,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:56,045 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:56,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:02:56,215 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:02:56,215 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:56,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 04:02:56,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:56,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:02:56,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:02:56,471 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:02:56,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 04:02:56,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-28 04:02:57,233 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 04:02:57,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-28 04:02:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:02:57,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:57,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:02:57,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2024-11-28 04:02:57,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:02:57,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2024-11-28 04:02:57,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2024-11-28 04:02:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:02:58,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544616513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:58,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:58,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 19, 19] total 44 [2024-11-28 04:02:58,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345805325] [2024-11-28 04:02:58,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:58,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-28 04:02:58,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:58,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-28 04:02:58,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1768, Unknown=2, NotChecked=0, Total=1980 [2024-11-28 04:02:59,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 97 [2024-11-28 04:02:59,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 342 transitions, 3474 flow. Second operand has 45 states, 45 states have (on average 26.533333333333335) internal successors, (1194), 45 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:59,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:59,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 97 [2024-11-28 04:02:59,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:06,317 INFO L124 PetriNetUnfolderBase]: 11804/21528 cut-off events. [2024-11-28 04:03:06,317 INFO L125 PetriNetUnfolderBase]: For 97768/99306 co-relation queries the response was YES. [2024-11-28 04:03:06,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83234 conditions, 21528 events. 11804/21528 cut-off events. For 97768/99306 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 177728 event pairs, 1656 based on Foata normal form. 500/21970 useless extension candidates. Maximal degree in co-relation 83178. Up to 5198 conditions per place. [2024-11-28 04:03:06,488 INFO L140 encePairwiseOnDemand]: 84/97 looper letters, 437 selfloop transitions, 75 changer transitions 34/573 dead transitions. [2024-11-28 04:03:06,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 573 transitions, 6439 flow [2024-11-28 04:03:06,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 04:03:06,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-28 04:03:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 766 transitions. [2024-11-28 04:03:06,491 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3290378006872852 [2024-11-28 04:03:06,491 INFO L175 Difference]: Start difference. First operand has 288 places, 342 transitions, 3474 flow. Second operand 24 states and 766 transitions. [2024-11-28 04:03:06,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 573 transitions, 6439 flow [2024-11-28 04:03:07,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 573 transitions, 6126 flow, removed 25 selfloop flow, removed 24 redundant places. [2024-11-28 04:03:07,200 INFO L231 Difference]: Finished difference. Result has 286 places, 339 transitions, 3380 flow [2024-11-28 04:03:07,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=3258, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3380, PETRI_PLACES=286, PETRI_TRANSITIONS=339} [2024-11-28 04:03:07,201 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 195 predicate places. [2024-11-28 04:03:07,201 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 339 transitions, 3380 flow [2024-11-28 04:03:07,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 26.533333333333335) internal successors, (1194), 45 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:07,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:07,202 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:07,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:07,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 04:03:07,403 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:03:07,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:07,403 INFO L85 PathProgramCache]: Analyzing trace with hash 624798291, now seen corresponding path program 2 times [2024-11-28 04:03:07,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:07,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499837836] [2024-11-28 04:03:07,403 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:03:07,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:07,439 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:03:07,439 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:08,162 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:03:08,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:08,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499837836] [2024-11-28 04:03:08,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499837836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:08,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618954072] [2024-11-28 04:03:08,163 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:03:08,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:08,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:08,165 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:08,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:03:08,362 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:03:08,362 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:08,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 04:03:08,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:08,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:03:08,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:03:08,615 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:03:08,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 04:03:08,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-28 04:03:09,228 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 04:03:09,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-28 04:03:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:03:09,336 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:09,934 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:09,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-28 04:03:09,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:09,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2024-11-28 04:03:09,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-28 04:03:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:03:10,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618954072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:10,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:10,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 21, 21] total 45 [2024-11-28 04:03:10,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363094067] [2024-11-28 04:03:10,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:10,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-28 04:03:10,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:10,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-28 04:03:10,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1864, Unknown=2, NotChecked=0, Total=2070 [2024-11-28 04:03:11,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 97 [2024-11-28 04:03:11,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 339 transitions, 3380 flow. Second operand has 46 states, 46 states have (on average 26.23913043478261) internal successors, (1207), 46 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:11,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:11,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 97 [2024-11-28 04:03:11,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:18,226 INFO L124 PetriNetUnfolderBase]: 9628/18161 cut-off events. [2024-11-28 04:03:18,226 INFO L125 PetriNetUnfolderBase]: For 59064/61196 co-relation queries the response was YES. [2024-11-28 04:03:18,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66043 conditions, 18161 events. 9628/18161 cut-off events. For 59064/61196 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 151407 event pairs, 1560 based on Foata normal form. 1174/19323 useless extension candidates. Maximal degree in co-relation 65990. Up to 2736 conditions per place. [2024-11-28 04:03:18,462 INFO L140 encePairwiseOnDemand]: 80/97 looper letters, 408 selfloop transitions, 97 changer transitions 370/895 dead transitions. [2024-11-28 04:03:18,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 895 transitions, 8940 flow [2024-11-28 04:03:18,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 04:03:18,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-28 04:03:18,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1306 transitions. [2024-11-28 04:03:18,464 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.345228654507005 [2024-11-28 04:03:18,464 INFO L175 Difference]: Start difference. First operand has 286 places, 339 transitions, 3380 flow. Second operand 39 states and 1306 transitions. [2024-11-28 04:03:18,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 895 transitions, 8940 flow [2024-11-28 04:03:18,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 895 transitions, 8782 flow, removed 22 selfloop flow, removed 23 redundant places. [2024-11-28 04:03:18,769 INFO L231 Difference]: Finished difference. Result has 299 places, 248 transitions, 2533 flow [2024-11-28 04:03:18,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=3248, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2533, PETRI_PLACES=299, PETRI_TRANSITIONS=248} [2024-11-28 04:03:18,770 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 208 predicate places. [2024-11-28 04:03:18,770 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 248 transitions, 2533 flow [2024-11-28 04:03:18,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 26.23913043478261) internal successors, (1207), 46 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:18,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:18,771 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:18,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:03:18,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 04:03:18,971 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:03:18,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:18,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1034191355, now seen corresponding path program 2 times [2024-11-28 04:03:18,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:18,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997518816] [2024-11-28 04:03:18,972 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:03:18,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:19,000 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:03:19,000 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:19,375 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 04:03:19,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:19,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997518816] [2024-11-28 04:03:19,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997518816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:19,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137033114] [2024-11-28 04:03:19,376 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:03:19,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:19,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:19,379 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:19,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:03:19,592 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:03:19,592 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:19,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 04:03:19,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:19,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:03:20,472 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 04:03:20,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-28 04:03:20,555 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:03:20,555 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:20,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-28 04:03:20,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-28 04:03:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:03:21,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137033114] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:21,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:21,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 18, 18] total 38 [2024-11-28 04:03:21,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035417555] [2024-11-28 04:03:21,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:21,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 04:03:21,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:21,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 04:03:21,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1320, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 04:03:22,550 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 97 [2024-11-28 04:03:22,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 248 transitions, 2533 flow. Second operand has 39 states, 39 states have (on average 33.97435897435897) internal successors, (1325), 39 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:22,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:22,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 97 [2024-11-28 04:03:22,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:26,237 INFO L124 PetriNetUnfolderBase]: 5628/11253 cut-off events. [2024-11-28 04:03:26,237 INFO L125 PetriNetUnfolderBase]: For 52006/52354 co-relation queries the response was YES. [2024-11-28 04:03:26,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43096 conditions, 11253 events. 5628/11253 cut-off events. For 52006/52354 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 93202 event pairs, 544 based on Foata normal form. 400/11629 useless extension candidates. Maximal degree in co-relation 43061. Up to 1848 conditions per place. [2024-11-28 04:03:26,353 INFO L140 encePairwiseOnDemand]: 82/97 looper letters, 664 selfloop transitions, 90 changer transitions 8/795 dead transitions. [2024-11-28 04:03:26,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 795 transitions, 9001 flow [2024-11-28 04:03:26,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 04:03:26,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-28 04:03:26,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1127 transitions. [2024-11-28 04:03:26,356 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4006398862424458 [2024-11-28 04:03:26,356 INFO L175 Difference]: Start difference. First operand has 299 places, 248 transitions, 2533 flow. Second operand 29 states and 1127 transitions. [2024-11-28 04:03:26,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 795 transitions, 9001 flow [2024-11-28 04:03:26,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 795 transitions, 7327 flow, removed 77 selfloop flow, removed 44 redundant places. [2024-11-28 04:03:26,937 INFO L231 Difference]: Finished difference. Result has 248 places, 251 transitions, 2283 flow [2024-11-28 04:03:26,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2283, PETRI_PLACES=248, PETRI_TRANSITIONS=251} [2024-11-28 04:03:26,937 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 157 predicate places. [2024-11-28 04:03:26,937 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 251 transitions, 2283 flow [2024-11-28 04:03:26,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 33.97435897435897) internal successors, (1325), 39 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:26,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:03:26,938 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:26,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 04:03:27,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 04:03:27,138 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-28 04:03:27,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1995162071, now seen corresponding path program 2 times [2024-11-28 04:03:27,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:27,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680154689] [2024-11-28 04:03:27,139 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:03:27,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:27,182 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:03:27,182 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 04:03:27,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:27,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680154689] [2024-11-28 04:03:27,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680154689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:27,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355567506] [2024-11-28 04:03:27,716 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:03:27,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:27,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:27,721 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:27,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:03:27,956 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:03:27,956 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:27,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 04:03:27,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:28,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:03:28,702 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 04:03:28,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-28 04:03:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:03:28,778 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:29,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-28 04:03:29,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-28 04:03:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:03:29,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355567506] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:29,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:29,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 19, 19] total 39 [2024-11-28 04:03:29,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255071013] [2024-11-28 04:03:29,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:29,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 04:03:29,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:29,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 04:03:29,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1394, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 04:03:30,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 97 [2024-11-28 04:03:30,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 251 transitions, 2283 flow. Second operand has 40 states, 40 states have (on average 34.925) internal successors, (1397), 40 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:30,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:03:30,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 97 [2024-11-28 04:03:30,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:03:33,285 INFO L124 PetriNetUnfolderBase]: 3988/8613 cut-off events. [2024-11-28 04:03:33,285 INFO L125 PetriNetUnfolderBase]: For 19772/19852 co-relation queries the response was YES. [2024-11-28 04:03:33,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27809 conditions, 8613 events. 3988/8613 cut-off events. For 19772/19852 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 71682 event pairs, 544 based on Foata normal form. 400/8995 useless extension candidates. Maximal degree in co-relation 27785. Up to 1152 conditions per place. [2024-11-28 04:03:33,335 INFO L140 encePairwiseOnDemand]: 82/97 looper letters, 0 selfloop transitions, 0 changer transitions 682/682 dead transitions. [2024-11-28 04:03:33,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 682 transitions, 6506 flow [2024-11-28 04:03:33,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 04:03:33,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-28 04:03:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1054 transitions. [2024-11-28 04:03:33,337 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40244368079419623 [2024-11-28 04:03:33,337 INFO L175 Difference]: Start difference. First operand has 248 places, 251 transitions, 2283 flow. Second operand 27 states and 1054 transitions. [2024-11-28 04:03:33,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 682 transitions, 6506 flow [2024-11-28 04:03:33,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 682 transitions, 6320 flow, removed 4 selfloop flow, removed 22 redundant places. [2024-11-28 04:03:33,417 INFO L231 Difference]: Finished difference. Result has 248 places, 0 transitions, 0 flow [2024-11-28 04:03:33,417 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=0, PETRI_PLACES=248, PETRI_TRANSITIONS=0} [2024-11-28 04:03:33,418 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 157 predicate places. [2024-11-28 04:03:33,418 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 0 transitions, 0 flow [2024-11-28 04:03:33,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 34.925) internal successors, (1397), 40 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:33,424 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 44 remaining) [2024-11-28 04:03:33,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 44 remaining) [2024-11-28 04:03:33,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 44 remaining) [2024-11-28 04:03:33,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 44 remaining) [2024-11-28 04:03:33,426 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 44 remaining) [2024-11-28 04:03:33,426 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 44 remaining) [2024-11-28 04:03:33,426 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 44 remaining) [2024-11-28 04:03:33,426 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 44 remaining) [2024-11-28 04:03:33,426 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 44 remaining) [2024-11-28 04:03:33,426 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 44 remaining) [2024-11-28 04:03:33,426 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 44 remaining) [2024-11-28 04:03:33,426 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 44 remaining) [2024-11-28 04:03:33,427 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 44 remaining) [2024-11-28 04:03:33,427 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 44 remaining) [2024-11-28 04:03:33,427 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 44 remaining) [2024-11-28 04:03:33,427 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 44 remaining) [2024-11-28 04:03:33,427 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 44 remaining) [2024-11-28 04:03:33,427 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 44 remaining) [2024-11-28 04:03:33,427 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 44 remaining) [2024-11-28 04:03:33,427 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 44 remaining) [2024-11-28 04:03:33,427 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 44 remaining) [2024-11-28 04:03:33,428 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 44 remaining) [2024-11-28 04:03:33,428 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 44 remaining) [2024-11-28 04:03:33,428 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 44 remaining) [2024-11-28 04:03:33,428 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 44 remaining) [2024-11-28 04:03:33,428 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 44 remaining) [2024-11-28 04:03:33,428 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 44 remaining) [2024-11-28 04:03:33,428 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 44 remaining) [2024-11-28 04:03:33,428 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 44 remaining) [2024-11-28 04:03:33,428 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 44 remaining) [2024-11-28 04:03:33,429 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 44 remaining) [2024-11-28 04:03:33,429 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 44 remaining) [2024-11-28 04:03:33,429 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 44 remaining) [2024-11-28 04:03:33,429 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 44 remaining) [2024-11-28 04:03:33,429 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 44 remaining) [2024-11-28 04:03:33,429 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 44 remaining) [2024-11-28 04:03:33,429 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 44 remaining) [2024-11-28 04:03:33,429 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 44 remaining) [2024-11-28 04:03:33,429 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 44 remaining) [2024-11-28 04:03:33,430 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 44 remaining) [2024-11-28 04:03:33,430 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 44 remaining) [2024-11-28 04:03:33,430 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 44 remaining) [2024-11-28 04:03:33,430 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 44 remaining) [2024-11-28 04:03:33,430 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 44 remaining) [2024-11-28 04:03:33,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:33,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 04:03:33,635 INFO L422 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:33,645 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 04:03:33,645 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:03:33,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:03:33 BasicIcfg [2024-11-28 04:03:33,662 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:03:33,663 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:03:33,663 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:03:33,663 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:03:33,665 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:01:02" (3/4) ... [2024-11-28 04:03:33,675 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 04:03:33,687 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-28 04:03:33,688 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-28 04:03:33,710 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 222 nodes and edges [2024-11-28 04:03:33,713 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2024-11-28 04:03:33,713 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-28 04:03:33,714 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 04:03:33,956 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:03:33,958 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:03:33,958 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:03:33,960 INFO L158 Benchmark]: Toolchain (without parser) took 153213.16ms. Allocated memory was 142.6MB in the beginning and 3.1GB in the end (delta: 3.0GB). Free memory was 119.0MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-11-28 04:03:33,962 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 142.6MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:03:33,962 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.90ms. Allocated memory is still 142.6MB. Free memory was 118.8MB in the beginning and 106.1MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:03:33,963 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.73ms. Allocated memory is still 142.6MB. Free memory was 106.1MB in the beginning and 103.6MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:03:33,963 INFO L158 Benchmark]: Boogie Preprocessor took 73.25ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 100.8MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:03:33,963 INFO L158 Benchmark]: RCFGBuilder took 1507.52ms. Allocated memory is still 142.6MB. Free memory was 100.5MB in the beginning and 60.2MB in the end (delta: 40.3MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. [2024-11-28 04:03:33,963 INFO L158 Benchmark]: TraceAbstraction took 150929.93ms. Allocated memory was 142.6MB in the beginning and 3.1GB in the end (delta: 3.0GB). Free memory was 59.6MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-11-28 04:03:33,964 INFO L158 Benchmark]: Witness Printer took 295.69ms. Allocated memory is still 3.1GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:03:33,968 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 142.6MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.90ms. Allocated memory is still 142.6MB. Free memory was 118.8MB in the beginning and 106.1MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.73ms. Allocated memory is still 142.6MB. Free memory was 106.1MB in the beginning and 103.6MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.25ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 100.8MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1507.52ms. Allocated memory is still 142.6MB. Free memory was 100.5MB in the beginning and 60.2MB in the end (delta: 40.3MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. * TraceAbstraction took 150929.93ms. Allocated memory was 142.6MB in the beginning and 3.1GB in the end (delta: 3.0GB). Free memory was 59.6MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 295.69ms. Allocated memory is still 3.1GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 121]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 121]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 121]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 121]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 130 locations, 44 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 150.7s, OverallIterations: 39, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 105.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 96 mSolverCounterUnknown, 10600 SdHoareTripleChecker+Valid, 38.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10088 mSDsluCounter, 26695 SdHoareTripleChecker+Invalid, 33.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 567 IncrementalHoareTripleChecker+Unchecked, 26527 mSDsCounter, 696 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38359 IncrementalHoareTripleChecker+Invalid, 39718 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 696 mSolverCounterUnsat, 168 mSDtfsCounter, 38359 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2122 GetRequests, 1197 SyntacticMatches, 19 SemanticMatches, 906 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 10209 ImplicationChecksByTransitivity, 26.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3474occurred in iteration=35, InterpolantAutomatonStates: 535, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 33.8s InterpolantComputationTime, 1930 NumberOfCodeBlocks, 1834 NumberOfCodeBlocksAsserted, 88 NumberOfCheckSat, 2588 ConstructedInterpolants, 374 QuantifiedInterpolants, 28003 SizeOfPredicates, 311 NumberOfNonLiveVariables, 6395 ConjunctsInSsa, 591 ConjunctsInUnsatCore, 85 InterpolantComputations, 18 PerfectInterpolantSequences, 754/1308 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 30 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 04:03:34,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55cd1be-b21b-4ca2-8fb2-ef115e4d6ad6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE