./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd --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 a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:12:56,545 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:12:56,623 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 13:12:56,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:12:56,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:12:56,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:12:56,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:12:56,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:12:56,681 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:12:56,681 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:12:56,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:12:56,681 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:12:56,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:12:56,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:12:56,682 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:12:56,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:12:56,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:12:56,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:12:56,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:12:56,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:12:56,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:12:56,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:12:56,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:12:56,683 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:12:56,686 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:12:56,687 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 13:12:56,687 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:12:56,687 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:12:56,687 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:12:56,687 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:12:56,687 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:12:56,687 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:12:56,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:12:56,687 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:12:56,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:12:56,688 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:12:56,688 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:12:56,688 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:12:56,688 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:12:56,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:12:56,688 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:12:56,688 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:12:56,688 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:12:56,688 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:12:56,689 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_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd 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 -> a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb [2024-11-13 13:12:57,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:12:57,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:12:57,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:12:57,054 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:12:57,055 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:12:57,056 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i Unable to find full path for "g++" [2024-11-13 13:12:59,126 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:12:59,478 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:12:59,479 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2024-11-13 13:12:59,506 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/data/04f447e52/d05bbe9f3c334b74be0b8902039e7124/FLAG937dc7a24 [2024-11-13 13:12:59,527 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/data/04f447e52/d05bbe9f3c334b74be0b8902039e7124 [2024-11-13 13:12:59,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:12:59,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:12:59,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:12:59,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:12:59,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:12:59,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:12:59" (1/1) ... [2024-11-13 13:12:59,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e139fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:59, skipping insertion in model container [2024-11-13 13:12:59,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:12:59" (1/1) ... [2024-11-13 13:12:59,602 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:13:00,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:13:00,185 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:13:00,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:13:00,297 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:13:00,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:00 WrapperNode [2024-11-13 13:13:00,297 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:13:00,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:13:00,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:13:00,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:13:00,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:00" (1/1) ... [2024-11-13 13:13:00,321 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:00" (1/1) ... [2024-11-13 13:13:00,352 INFO L138 Inliner]: procedures = 268, calls = 104, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 167 [2024-11-13 13:13:00,353 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:13:00,353 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:13:00,353 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:13:00,354 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:13:00,364 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:00" (1/1) ... [2024-11-13 13:13:00,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:00" (1/1) ... [2024-11-13 13:13:00,371 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:00" (1/1) ... [2024-11-13 13:13:00,399 INFO L175 MemorySlicer]: Split 94 memory accesses to 1 slices as follows [94]. 100 percent of accesses are in the largest equivalence class. The 90 initializations are split as follows [90]. The 2 writes are split as follows [2]. [2024-11-13 13:13:00,399 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:00" (1/1) ... [2024-11-13 13:13:00,399 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:00" (1/1) ... [2024-11-13 13:13:00,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:00" (1/1) ... [2024-11-13 13:13:00,411 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:00" (1/1) ... [2024-11-13 13:13:00,414 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:00" (1/1) ... [2024-11-13 13:13:00,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:00" (1/1) ... [2024-11-13 13:13:00,421 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:13:00,422 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:13:00,422 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:13:00,422 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:13:00,423 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:00" (1/1) ... [2024-11-13 13:13:00,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:13:00,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:00,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:13:00,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:13:00,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 13:13:00,499 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 13:13:00,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:13:00,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:13:00,500 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 13:13:00,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:13:00,500 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-13 13:13:00,500 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-13 13:13:00,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:13:00,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:13:00,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:13:00,503 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:13:00,645 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:13:00,647 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:13:01,105 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:13:01,105 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:13:01,938 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:13:01,939 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:13:01,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:13:01 BoogieIcfgContainer [2024-11-13 13:13:01,939 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:13:01,942 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:13:01,942 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:13:01,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:13:01,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:12:59" (1/3) ... [2024-11-13 13:13:01,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561a908e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:13:01, skipping insertion in model container [2024-11-13 13:13:01,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:00" (2/3) ... [2024-11-13 13:13:01,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561a908e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:13:01, skipping insertion in model container [2024-11-13 13:13:01,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:13:01" (3/3) ... [2024-11-13 13:13:01,951 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.i [2024-11-13 13:13:01,972 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:13:01,974 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_08-tricky_address3.i that has 2 procedures, 31 locations, 1 initial locations, 1 loop locations, and 8 error locations. [2024-11-13 13:13:01,974 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:13:02,031 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:13:02,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 66 flow [2024-11-13 13:13:02,132 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2024-11-13 13:13:02,136 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:13:02,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 1/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2024-11-13 13:13:02,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 31 transitions, 66 flow [2024-11-13 13:13:02,144 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 30 transitions, 63 flow [2024-11-13 13:13:02,157 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:13:02,180 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;@13fe972f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:13:02,180 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-13 13:13:02,189 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:13:02,190 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-13 13:13:02,190 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:13:02,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:02,193 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:13:02,193 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:13:02,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:02,199 INFO L85 PathProgramCache]: Analyzing trace with hash 411530, now seen corresponding path program 1 times [2024-11-13 13:13:02,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:02,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255851290] [2024-11-13 13:13:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:02,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:02,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:02,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255851290] [2024-11-13 13:13:02,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255851290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:02,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:02,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:13:02,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114003572] [2024-11-13 13:13:02,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:02,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:02,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:02,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:02,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:02,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-13 13:13:02,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:02,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:02,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-13 13:13:02,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:03,053 INFO L124 PetriNetUnfolderBase]: 43/147 cut-off events. [2024-11-13 13:13:03,053 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:13:03,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 147 events. 43/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 548 event pairs, 42 based on Foata normal form. 1/131 useless extension candidates. Maximal degree in co-relation 233. Up to 105 conditions per place. [2024-11-13 13:13:03,056 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 19 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-11-13 13:13:03,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 111 flow [2024-11-13 13:13:03,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:13:03,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:13:03,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-11-13 13:13:03,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2024-11-13 13:13:03,071 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 63 flow. Second operand 4 states and 69 transitions. [2024-11-13 13:13:03,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 111 flow [2024-11-13 13:13:03,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:03,082 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2024-11-13 13:13:03,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-11-13 13:13:03,089 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-11-13 13:13:03,089 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2024-11-13 13:13:03,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:03,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:03,090 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-13 13:13:03,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:13:03,090 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:13:03,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:03,090 INFO L85 PathProgramCache]: Analyzing trace with hash -624594362, now seen corresponding path program 1 times [2024-11-13 13:13:03,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:03,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339356639] [2024-11-13 13:13:03,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:03,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:03,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:03,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:03,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339356639] [2024-11-13 13:13:03,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339356639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:03,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040046649] [2024-11-13 13:13:03,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:03,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:03,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:03,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:03,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:13:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:03,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:13:03,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:03,625 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:13:03,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040046649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:03,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:13:03,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 13:13:03,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953965943] [2024-11-13 13:13:03,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:03,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:13:03,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:03,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:13:03,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:13:03,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-13 13:13:03,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:03,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:03,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-13 13:13:03,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:03,858 INFO L124 PetriNetUnfolderBase]: 43/146 cut-off events. [2024-11-13 13:13:03,858 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 13:13:03,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 146 events. 43/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 547 event pairs, 42 based on Foata normal form. 1/130 useless extension candidates. Maximal degree in co-relation 250. Up to 100 conditions per place. [2024-11-13 13:13:03,860 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 15 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2024-11-13 13:13:03,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 124 flow [2024-11-13 13:13:03,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:13:03,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:13:03,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-11-13 13:13:03,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-11-13 13:13:03,862 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 6 states and 88 transitions. [2024-11-13 13:13:03,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 124 flow [2024-11-13 13:13:03,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 31 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:03,864 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 92 flow [2024-11-13 13:13:03,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2024-11-13 13:13:03,865 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-11-13 13:13:03,865 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 92 flow [2024-11-13 13:13:03,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:03,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:03,865 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-13 13:13:03,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:13:04,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:04,070 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:13:04,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:04,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2112411679, now seen corresponding path program 1 times [2024-11-13 13:13:04,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:04,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868205943] [2024-11-13 13:13:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:04,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:04,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:04,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868205943] [2024-11-13 13:13:04,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868205943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:04,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:04,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:13:04,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523834773] [2024-11-13 13:13:04,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:04,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:13:04,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:04,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:13:04,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:13:04,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-13 13:13:04,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:04,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:04,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-13 13:13:04,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:04,295 INFO L124 PetriNetUnfolderBase]: 43/145 cut-off events. [2024-11-13 13:13:04,296 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-13 13:13:04,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 145 events. 43/145 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 548 event pairs, 42 based on Foata normal form. 1/130 useless extension candidates. Maximal degree in co-relation 246. Up to 103 conditions per place. [2024-11-13 13:13:04,298 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 16 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-11-13 13:13:04,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 30 transitions, 128 flow [2024-11-13 13:13:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:13:04,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:13:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-13 13:13:04,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2024-11-13 13:13:04,302 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 92 flow. Second operand 3 states and 52 transitions. [2024-11-13 13:13:04,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 30 transitions, 128 flow [2024-11-13 13:13:04,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 106 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-13 13:13:04,304 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 74 flow [2024-11-13 13:13:04,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2024-11-13 13:13:04,307 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-11-13 13:13:04,307 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 74 flow [2024-11-13 13:13:04,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:04,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:04,308 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:04,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:13:04,309 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:13:04,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:04,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1053874898, now seen corresponding path program 1 times [2024-11-13 13:13:04,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:04,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173247357] [2024-11-13 13:13:04,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:04,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:04,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:04,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173247357] [2024-11-13 13:13:04,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173247357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:04,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116543526] [2024-11-13 13:13:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:04,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:04,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:04,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:04,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:13:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:04,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:13:04,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:04,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:04,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116543526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:04,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:04,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-13 13:13:04,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770787169] [2024-11-13 13:13:04,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:04,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:13:04,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:04,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:13:04,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:13:04,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-13 13:13:04,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 74 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:04,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:04,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-13 13:13:04,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:04,968 INFO L124 PetriNetUnfolderBase]: 43/149 cut-off events. [2024-11-13 13:13:04,968 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-13 13:13:04,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 149 events. 43/149 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 545 event pairs, 42 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 239. Up to 101 conditions per place. [2024-11-13 13:13:04,970 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 16 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2024-11-13 13:13:04,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 135 flow [2024-11-13 13:13:04,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:13:04,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 13:13:04,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-11-13 13:13:04,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4700460829493088 [2024-11-13 13:13:04,972 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 74 flow. Second operand 7 states and 102 transitions. [2024-11-13 13:13:04,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 135 flow [2024-11-13 13:13:04,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 121 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:13:04,975 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 100 flow [2024-11-13 13:13:04,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-11-13 13:13:04,977 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2024-11-13 13:13:04,977 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 100 flow [2024-11-13 13:13:04,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:04,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:04,978 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:04,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:13:05,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:05,179 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:13:05,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:05,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1865503826, now seen corresponding path program 2 times [2024-11-13 13:13:05,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:05,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448140924] [2024-11-13 13:13:05,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:05,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:05,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:05,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448140924] [2024-11-13 13:13:05,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448140924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436943700] [2024-11-13 13:13:05,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:13:05,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:05,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:05,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:05,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:13:05,695 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 13:13:05,695 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:05,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 13:13:05,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:06,996 INFO L349 Elim1Store]: treesize reduction 78, result has 3.7 percent of original size [2024-11-13 13:13:06,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 56 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 87 treesize of output 40 [2024-11-13 13:13:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:13:07,022 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:13:07,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436943700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:07,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:13:07,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2024-11-13 13:13:07,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207603977] [2024-11-13 13:13:07,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:07,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:13:07,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:07,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:13:07,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:13:07,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-13 13:13:07,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:07,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:07,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-13 13:13:07,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:07,316 INFO L124 PetriNetUnfolderBase]: 57/164 cut-off events. [2024-11-13 13:13:07,317 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-13 13:13:07,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 164 events. 57/164 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 564 event pairs, 18 based on Foata normal form. 8/155 useless extension candidates. Maximal degree in co-relation 284. Up to 74 conditions per place. [2024-11-13 13:13:07,321 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 34 selfloop transitions, 7 changer transitions 3/52 dead transitions. [2024-11-13 13:13:07,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 226 flow [2024-11-13 13:13:07,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:13:07,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:13:07,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-11-13 13:13:07,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2024-11-13 13:13:07,323 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 100 flow. Second operand 6 states and 107 transitions. [2024-11-13 13:13:07,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 226 flow [2024-11-13 13:13:07,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:13:07,329 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 136 flow [2024-11-13 13:13:07,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2024-11-13 13:13:07,330 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2024-11-13 13:13:07,330 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 136 flow [2024-11-13 13:13:07,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:07,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:07,330 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:07,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:13:07,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:07,531 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:13:07,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:07,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1865891848, now seen corresponding path program 1 times [2024-11-13 13:13:07,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:07,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688407381] [2024-11-13 13:13:07,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:07,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:13:07,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:07,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688407381] [2024-11-13 13:13:07,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688407381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:07,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:07,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:13:07,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167616907] [2024-11-13 13:13:07,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:07,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:07,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:07,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:07,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:07,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-13 13:13:07,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:07,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:07,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-13 13:13:07,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:07,804 INFO L124 PetriNetUnfolderBase]: 39/146 cut-off events. [2024-11-13 13:13:07,804 INFO L125 PetriNetUnfolderBase]: For 75/78 co-relation queries the response was YES. [2024-11-13 13:13:07,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 146 events. 39/146 cut-off events. For 75/78 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 571 event pairs, 2 based on Foata normal form. 7/139 useless extension candidates. Maximal degree in co-relation 291. Up to 62 conditions per place. [2024-11-13 13:13:07,806 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 35 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2024-11-13 13:13:07,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 250 flow [2024-11-13 13:13:07,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:13:07,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:13:07,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-11-13 13:13:07,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2024-11-13 13:13:07,808 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 136 flow. Second operand 4 states and 76 transitions. [2024-11-13 13:13:07,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 250 flow [2024-11-13 13:13:07,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:07,811 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 138 flow [2024-11-13 13:13:07,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2024-11-13 13:13:07,812 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2024-11-13 13:13:07,813 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 138 flow [2024-11-13 13:13:07,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:07,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:07,813 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:07,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:13:07,814 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:13:07,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:07,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1996044175, now seen corresponding path program 1 times [2024-11-13 13:13:07,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:07,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779483243] [2024-11-13 13:13:07,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:07,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:08,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:08,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:08,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779483243] [2024-11-13 13:13:08,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779483243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:08,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024446823] [2024-11-13 13:13:08,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:08,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:08,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:08,096 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:08,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:13:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:08,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:13:08,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:08,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:08,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024446823] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:08,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:08,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-13 13:13:08,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904930353] [2024-11-13 13:13:08,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:08,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 13:13:08,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:08,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 13:13:08,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:13:08,475 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-13 13:13:08,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 138 flow. Second operand has 18 states, 18 states have (on average 12.277777777777779) internal successors, (221), 18 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:08,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:08,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-13 13:13:08,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:08,742 INFO L124 PetriNetUnfolderBase]: 33/146 cut-off events. [2024-11-13 13:13:08,742 INFO L125 PetriNetUnfolderBase]: For 94/95 co-relation queries the response was YES. [2024-11-13 13:13:08,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 146 events. 33/146 cut-off events. For 94/95 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 484 event pairs, 32 based on Foata normal form. 4/144 useless extension candidates. Maximal degree in co-relation 320. Up to 85 conditions per place. [2024-11-13 13:13:08,745 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 18 selfloop transitions, 15 changer transitions 0/43 dead transitions. [2024-11-13 13:13:08,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 43 transitions, 252 flow [2024-11-13 13:13:08,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:13:08,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 13:13:08,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 200 transitions. [2024-11-13 13:13:08,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-11-13 13:13:08,748 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 138 flow. Second operand 15 states and 200 transitions. [2024-11-13 13:13:08,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 43 transitions, 252 flow [2024-11-13 13:13:08,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 43 transitions, 246 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 13:13:08,753 INFO L231 Difference]: Finished difference. Result has 64 places, 43 transitions, 229 flow [2024-11-13 13:13:08,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=229, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2024-11-13 13:13:08,754 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2024-11-13 13:13:08,754 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 229 flow [2024-11-13 13:13:08,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.277777777777779) internal successors, (221), 18 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:08,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:08,755 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:08,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:13:08,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:08,956 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:13:08,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:08,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1472854897, now seen corresponding path program 2 times [2024-11-13 13:13:08,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:08,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40244542] [2024-11-13 13:13:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:08,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:09,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:09,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40244542] [2024-11-13 13:13:09,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40244542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:09,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327927475] [2024-11-13 13:13:09,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:13:09,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:09,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:09,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:09,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:13:09,596 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 13:13:09,596 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:09,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 13:13:09,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:11,133 INFO L349 Elim1Store]: treesize reduction 78, result has 3.7 percent of original size [2024-11-13 13:13:11,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 56 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 87 treesize of output 40 [2024-11-13 13:13:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 13:13:11,169 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:13:11,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327927475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:11,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:13:11,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 19 [2024-11-13 13:13:11,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110650132] [2024-11-13 13:13:11,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:11,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:13:11,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:11,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:13:11,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-11-13 13:13:11,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-13 13:13:11,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:11,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:11,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-13 13:13:11,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:11,492 INFO L124 PetriNetUnfolderBase]: 37/139 cut-off events. [2024-11-13 13:13:11,492 INFO L125 PetriNetUnfolderBase]: For 132/134 co-relation queries the response was YES. [2024-11-13 13:13:11,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 139 events. 37/139 cut-off events. For 132/134 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 406 event pairs, 12 based on Foata normal form. 10/146 useless extension candidates. Maximal degree in co-relation 309. Up to 53 conditions per place. [2024-11-13 13:13:11,496 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 40 selfloop transitions, 6 changer transitions 1/54 dead transitions. [2024-11-13 13:13:11,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 54 transitions, 343 flow [2024-11-13 13:13:11,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:13:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:13:11,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-11-13 13:13:11,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-11-13 13:13:11,498 INFO L175 Difference]: Start difference. First operand has 64 places, 43 transitions, 229 flow. Second operand 6 states and 102 transitions. [2024-11-13 13:13:11,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 54 transitions, 343 flow [2024-11-13 13:13:11,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 54 transitions, 329 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-13 13:13:11,503 INFO L231 Difference]: Finished difference. Result has 64 places, 41 transitions, 217 flow [2024-11-13 13:13:11,503 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2024-11-13 13:13:11,504 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2024-11-13 13:13:11,507 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 217 flow [2024-11-13 13:13:11,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:11,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:11,507 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:11,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:13:11,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:11,712 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:13:11,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:11,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1460826200, now seen corresponding path program 1 times [2024-11-13 13:13:11,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:11,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461674120] [2024-11-13 13:13:11,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:11,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 13:13:11,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:11,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461674120] [2024-11-13 13:13:11,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461674120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:11,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:11,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:13:11,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44250088] [2024-11-13 13:13:11,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:11,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:11,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:11,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:11,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:11,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-13 13:13:11,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:11,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:11,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-13 13:13:11,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:11,986 INFO L124 PetriNetUnfolderBase]: 33/130 cut-off events. [2024-11-13 13:13:11,986 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2024-11-13 13:13:11,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 130 events. 33/130 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 366 event pairs, 14 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 316. Up to 58 conditions per place. [2024-11-13 13:13:11,988 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 41 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2024-11-13 13:13:11,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 52 transitions, 349 flow [2024-11-13 13:13:11,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:13:11,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:13:11,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-11-13 13:13:11,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6048387096774194 [2024-11-13 13:13:11,990 INFO L175 Difference]: Start difference. First operand has 64 places, 41 transitions, 217 flow. Second operand 4 states and 75 transitions. [2024-11-13 13:13:11,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 52 transitions, 349 flow [2024-11-13 13:13:11,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 52 transitions, 325 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-13 13:13:11,994 INFO L231 Difference]: Finished difference. Result has 61 places, 40 transitions, 207 flow [2024-11-13 13:13:11,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2024-11-13 13:13:11,995 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2024-11-13 13:13:11,995 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 207 flow [2024-11-13 13:13:11,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:11,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:11,995 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:11,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:13:11,995 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:13:11,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:11,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1959028490, now seen corresponding path program 1 times [2024-11-13 13:13:11,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:11,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056969265] [2024-11-13 13:13:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:11,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:12,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:12,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056969265] [2024-11-13 13:13:12,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056969265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:12,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748335558] [2024-11-13 13:13:12,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:12,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:12,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:12,438 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:12,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:13:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:12,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 13:13:12,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:12,682 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:12,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:12,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748335558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:12,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:12,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-13 13:13:12,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483290253] [2024-11-13 13:13:12,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:12,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 13:13:12,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:12,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 13:13:12,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-13 13:13:13,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-13 13:13:13,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 207 flow. Second operand has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:13,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:13,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-13 13:13:13,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:13,316 INFO L124 PetriNetUnfolderBase]: 33/144 cut-off events. [2024-11-13 13:13:13,316 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-11-13 13:13:13,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 144 events. 33/144 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 405 event pairs, 32 based on Foata normal form. 3/141 useless extension candidates. Maximal degree in co-relation 260. Up to 82 conditions per place. [2024-11-13 13:13:13,318 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 17 selfloop transitions, 21 changer transitions 0/46 dead transitions. [2024-11-13 13:13:13,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 46 transitions, 337 flow [2024-11-13 13:13:13,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 13:13:13,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-13 13:13:13,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 271 transitions. [2024-11-13 13:13:13,321 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4162826420890937 [2024-11-13 13:13:13,321 INFO L175 Difference]: Start difference. First operand has 61 places, 40 transitions, 207 flow. Second operand 21 states and 271 transitions. [2024-11-13 13:13:13,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 46 transitions, 337 flow [2024-11-13 13:13:13,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 46 transitions, 331 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 13:13:13,324 INFO L231 Difference]: Finished difference. Result has 81 places, 46 transitions, 312 flow [2024-11-13 13:13:13,324 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=312, PETRI_PLACES=81, PETRI_TRANSITIONS=46} [2024-11-13 13:13:13,325 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 48 predicate places. [2024-11-13 13:13:13,325 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 46 transitions, 312 flow [2024-11-13 13:13:13,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:13,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:13,326 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:13,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 13:13:13,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 13:13:13,531 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:13:13,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:13,531 INFO L85 PathProgramCache]: Analyzing trace with hash 541801806, now seen corresponding path program 2 times [2024-11-13 13:13:13,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:13,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197567669] [2024-11-13 13:13:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:13,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:15,343 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:13:15,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:15,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197567669] [2024-11-13 13:13:15,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197567669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:15,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:15,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:13:15,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383539260] [2024-11-13 13:13:15,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:15,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:13:15,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:15,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:13:15,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:13:15,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-11-13 13:13:15,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 46 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:15,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:15,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-11-13 13:13:15,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:15,677 INFO L124 PetriNetUnfolderBase]: 36/145 cut-off events. [2024-11-13 13:13:15,677 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-11-13 13:13:15,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 145 events. 36/145 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 382 event pairs, 8 based on Foata normal form. 14/159 useless extension candidates. Maximal degree in co-relation 255. Up to 57 conditions per place. [2024-11-13 13:13:15,678 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 46 selfloop transitions, 6 changer transitions 4/62 dead transitions. [2024-11-13 13:13:15,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 62 transitions, 468 flow [2024-11-13 13:13:15,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:13:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:13:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-11-13 13:13:15,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2024-11-13 13:13:15,680 INFO L175 Difference]: Start difference. First operand has 81 places, 46 transitions, 312 flow. Second operand 6 states and 107 transitions. [2024-11-13 13:13:15,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 62 transitions, 468 flow [2024-11-13 13:13:15,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 62 transitions, 425 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-11-13 13:13:15,684 INFO L231 Difference]: Finished difference. Result has 77 places, 49 transitions, 310 flow [2024-11-13 13:13:15,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=77, PETRI_TRANSITIONS=49} [2024-11-13 13:13:15,687 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 44 predicate places. [2024-11-13 13:13:15,687 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 49 transitions, 310 flow [2024-11-13 13:13:15,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:15,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:15,688 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:15,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:13:15,688 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:13:15,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:15,688 INFO L85 PathProgramCache]: Analyzing trace with hash 2008177424, now seen corresponding path program 1 times [2024-11-13 13:13:15,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:15,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328144402] [2024-11-13 13:13:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:15,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:13:26,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328144402] [2024-11-13 13:13:26,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328144402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:26,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:26,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 13:13:26,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086307655] [2024-11-13 13:13:26,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:26,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:13:26,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:26,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:13:26,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:13:26,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-11-13 13:13:26,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 49 transitions, 310 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:26,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:26,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-11-13 13:13:26,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:29,432 INFO L124 PetriNetUnfolderBase]: 71/217 cut-off events. [2024-11-13 13:13:29,433 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2024-11-13 13:13:29,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 217 events. 71/217 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 720 event pairs, 12 based on Foata normal form. 3/220 useless extension candidates. Maximal degree in co-relation 594. Up to 45 conditions per place. [2024-11-13 13:13:29,435 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 21 changer transitions 6/96 dead transitions. [2024-11-13 13:13:29,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 96 transitions, 661 flow [2024-11-13 13:13:29,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:13:29,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-13 13:13:29,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 188 transitions. [2024-11-13 13:13:29,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-11-13 13:13:29,437 INFO L175 Difference]: Start difference. First operand has 77 places, 49 transitions, 310 flow. Second operand 16 states and 188 transitions. [2024-11-13 13:13:29,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 96 transitions, 661 flow [2024-11-13 13:13:29,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 96 transitions, 646 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-13 13:13:29,442 INFO L231 Difference]: Finished difference. Result has 95 places, 64 transitions, 450 flow [2024-11-13 13:13:29,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=450, PETRI_PLACES=95, PETRI_TRANSITIONS=64} [2024-11-13 13:13:29,443 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 62 predicate places. [2024-11-13 13:13:29,443 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 64 transitions, 450 flow [2024-11-13 13:13:29,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:29,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:29,443 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:29,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:13:29,444 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:13:29,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:29,444 INFO L85 PathProgramCache]: Analyzing trace with hash 359175140, now seen corresponding path program 2 times [2024-11-13 13:13:29,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:29,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258058550] [2024-11-13 13:13:29,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:29,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:13:34,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:34,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258058550] [2024-11-13 13:13:34,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258058550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:34,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:34,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:13:34,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017118427] [2024-11-13 13:13:34,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:34,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:13:34,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:34,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:13:34,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:13:34,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-13 13:13:34,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 64 transitions, 450 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:34,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:34,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-13 13:13:34,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:37,518 INFO L124 PetriNetUnfolderBase]: 77/268 cut-off events. [2024-11-13 13:13:37,518 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-11-13 13:13:37,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 268 events. 77/268 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1147 event pairs, 17 based on Foata normal form. 3/271 useless extension candidates. Maximal degree in co-relation 784. Up to 63 conditions per place. [2024-11-13 13:13:37,521 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 67 selfloop transitions, 23 changer transitions 6/100 dead transitions. [2024-11-13 13:13:37,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 100 transitions, 821 flow [2024-11-13 13:13:37,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 13:13:37,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 13:13:37,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-11-13 13:13:37,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-13 13:13:37,523 INFO L175 Difference]: Start difference. First operand has 95 places, 64 transitions, 450 flow. Second operand 12 states and 155 transitions. [2024-11-13 13:13:37,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 100 transitions, 821 flow [2024-11-13 13:13:37,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 100 transitions, 787 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-13 13:13:37,529 INFO L231 Difference]: Finished difference. Result has 109 places, 73 transitions, 589 flow [2024-11-13 13:13:37,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=589, PETRI_PLACES=109, PETRI_TRANSITIONS=73} [2024-11-13 13:13:37,530 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 76 predicate places. [2024-11-13 13:13:37,530 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 73 transitions, 589 flow [2024-11-13 13:13:37,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:37,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:37,531 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:37,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 13:13:37,531 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:13:37,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:37,532 INFO L85 PathProgramCache]: Analyzing trace with hash -498735303, now seen corresponding path program 1 times [2024-11-13 13:13:37,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:37,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042503876] [2024-11-13 13:13:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:37,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:13:46,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:46,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042503876] [2024-11-13 13:13:46,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042503876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:46,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:46,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:13:46,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756107307] [2024-11-13 13:13:46,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:46,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:13:46,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:46,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:13:46,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:13:46,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-11-13 13:13:46,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 73 transitions, 589 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:46,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:46,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-11-13 13:13:46,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:48,372 INFO L124 PetriNetUnfolderBase]: 89/284 cut-off events. [2024-11-13 13:13:48,372 INFO L125 PetriNetUnfolderBase]: For 628/631 co-relation queries the response was YES. [2024-11-13 13:13:48,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 284 events. 89/284 cut-off events. For 628/631 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1192 event pairs, 31 based on Foata normal form. 6/290 useless extension candidates. Maximal degree in co-relation 917. Up to 149 conditions per place. [2024-11-13 13:13:48,376 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 70 selfloop transitions, 33 changer transitions 2/107 dead transitions. [2024-11-13 13:13:48,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 107 transitions, 981 flow [2024-11-13 13:13:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:13:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 13:13:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 174 transitions. [2024-11-13 13:13:48,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-11-13 13:13:48,378 INFO L175 Difference]: Start difference. First operand has 109 places, 73 transitions, 589 flow. Second operand 15 states and 174 transitions. [2024-11-13 13:13:48,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 107 transitions, 981 flow [2024-11-13 13:13:48,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 107 transitions, 952 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-13 13:13:48,389 INFO L231 Difference]: Finished difference. Result has 122 places, 86 transitions, 762 flow [2024-11-13 13:13:48,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=762, PETRI_PLACES=122, PETRI_TRANSITIONS=86} [2024-11-13 13:13:48,391 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 89 predicate places. [2024-11-13 13:13:48,392 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 86 transitions, 762 flow [2024-11-13 13:13:48,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:48,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:48,393 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:48,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 13:13:48,393 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:13:48,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:48,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1269601217, now seen corresponding path program 2 times [2024-11-13 13:13:48,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:48,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587605873] [2024-11-13 13:13:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:48,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:13:56,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:56,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587605873] [2024-11-13 13:13:56,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587605873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:56,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:56,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:13:56,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96473028] [2024-11-13 13:13:56,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:56,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:13:56,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:56,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:13:56,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:13:56,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-11-13 13:13:56,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 86 transitions, 762 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:56,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:56,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-11-13 13:13:56,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:58,602 INFO L124 PetriNetUnfolderBase]: 94/301 cut-off events. [2024-11-13 13:13:58,602 INFO L125 PetriNetUnfolderBase]: For 832/835 co-relation queries the response was YES. [2024-11-13 13:13:58,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 301 events. 94/301 cut-off events. For 832/835 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1308 event pairs, 36 based on Foata normal form. 4/305 useless extension candidates. Maximal degree in co-relation 1098. Up to 156 conditions per place. [2024-11-13 13:13:58,609 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 72 selfloop transitions, 32 changer transitions 2/108 dead transitions. [2024-11-13 13:13:58,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 108 transitions, 1076 flow [2024-11-13 13:13:58,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:13:58,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 13:13:58,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 168 transitions. [2024-11-13 13:13:58,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-11-13 13:13:58,611 INFO L175 Difference]: Start difference. First operand has 122 places, 86 transitions, 762 flow. Second operand 15 states and 168 transitions. [2024-11-13 13:13:58,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 108 transitions, 1076 flow [2024-11-13 13:13:58,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 108 transitions, 1005 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-13 13:13:58,627 INFO L231 Difference]: Finished difference. Result has 137 places, 91 transitions, 851 flow [2024-11-13 13:13:58,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=851, PETRI_PLACES=137, PETRI_TRANSITIONS=91} [2024-11-13 13:13:58,630 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 104 predicate places. [2024-11-13 13:13:58,630 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 91 transitions, 851 flow [2024-11-13 13:13:58,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:58,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:58,632 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:58,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 13:13:58,632 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:13:58,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:58,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1270754417, now seen corresponding path program 3 times [2024-11-13 13:13:58,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:58,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715215378] [2024-11-13 13:13:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:58,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:05,355 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:14:05,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:05,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715215378] [2024-11-13 13:14:05,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715215378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:05,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:05,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:14:05,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500967640] [2024-11-13 13:14:05,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:05,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:14:05,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:05,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:14:05,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:14:05,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-11-13 13:14:05,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 91 transitions, 851 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:05,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:05,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-11-13 13:14:05,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:07,122 INFO L124 PetriNetUnfolderBase]: 99/316 cut-off events. [2024-11-13 13:14:07,122 INFO L125 PetriNetUnfolderBase]: For 963/966 co-relation queries the response was YES. [2024-11-13 13:14:07,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 316 events. 99/316 cut-off events. For 963/966 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1435 event pairs, 31 based on Foata normal form. 4/320 useless extension candidates. Maximal degree in co-relation 1195. Up to 153 conditions per place. [2024-11-13 13:14:07,126 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 78 selfloop transitions, 38 changer transitions 1/119 dead transitions. [2024-11-13 13:14:07,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 119 transitions, 1227 flow [2024-11-13 13:14:07,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:14:07,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 13:14:07,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 172 transitions. [2024-11-13 13:14:07,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36989247311827955 [2024-11-13 13:14:07,128 INFO L175 Difference]: Start difference. First operand has 137 places, 91 transitions, 851 flow. Second operand 15 states and 172 transitions. [2024-11-13 13:14:07,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 119 transitions, 1227 flow [2024-11-13 13:14:07,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 119 transitions, 1171 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-11-13 13:14:07,141 INFO L231 Difference]: Finished difference. Result has 147 places, 99 transitions, 955 flow [2024-11-13 13:14:07,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=955, PETRI_PLACES=147, PETRI_TRANSITIONS=99} [2024-11-13 13:14:07,142 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 114 predicate places. [2024-11-13 13:14:07,143 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 99 transitions, 955 flow [2024-11-13 13:14:07,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:07,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:07,143 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:07,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 13:14:07,144 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:14:07,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:07,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1101702551, now seen corresponding path program 4 times [2024-11-13 13:14:07,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:07,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761355272] [2024-11-13 13:14:07,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:07,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:14:12,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:12,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761355272] [2024-11-13 13:14:12,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761355272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:12,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:12,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:14:12,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816426997] [2024-11-13 13:14:12,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:12,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:14:12,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:12,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:14:12,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:14:12,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-13 13:14:12,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 99 transitions, 955 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:12,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:12,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-13 13:14:12,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:16,693 INFO L124 PetriNetUnfolderBase]: 80/300 cut-off events. [2024-11-13 13:14:16,693 INFO L125 PetriNetUnfolderBase]: For 1184/1189 co-relation queries the response was YES. [2024-11-13 13:14:16,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 300 events. 80/300 cut-off events. For 1184/1189 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1442 event pairs, 31 based on Foata normal form. 8/305 useless extension candidates. Maximal degree in co-relation 1197. Up to 147 conditions per place. [2024-11-13 13:14:16,696 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 67 selfloop transitions, 32 changer transitions 1/117 dead transitions. [2024-11-13 13:14:16,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 117 transitions, 1235 flow [2024-11-13 13:14:16,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:14:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 13:14:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 192 transitions. [2024-11-13 13:14:16,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-11-13 13:14:16,699 INFO L175 Difference]: Start difference. First operand has 147 places, 99 transitions, 955 flow. Second operand 15 states and 192 transitions. [2024-11-13 13:14:16,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 117 transitions, 1235 flow [2024-11-13 13:14:16,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 117 transitions, 1183 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-13 13:14:16,715 INFO L231 Difference]: Finished difference. Result has 156 places, 102 transitions, 1017 flow [2024-11-13 13:14:16,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1017, PETRI_PLACES=156, PETRI_TRANSITIONS=102} [2024-11-13 13:14:16,715 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 123 predicate places. [2024-11-13 13:14:16,715 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 102 transitions, 1017 flow [2024-11-13 13:14:16,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:16,716 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:16,716 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:16,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 13:14:16,716 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:14:16,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:16,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1254614472, now seen corresponding path program 3 times [2024-11-13 13:14:16,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:16,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411432587] [2024-11-13 13:14:16,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:16,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:23,144 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:14:23,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:23,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411432587] [2024-11-13 13:14:23,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411432587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:23,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:23,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 13:14:23,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328020179] [2024-11-13 13:14:23,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:23,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:14:23,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:23,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:14:23,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:14:23,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-11-13 13:14:23,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 102 transitions, 1017 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:23,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:23,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-11-13 13:14:23,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:24,985 INFO L124 PetriNetUnfolderBase]: 120/382 cut-off events. [2024-11-13 13:14:24,985 INFO L125 PetriNetUnfolderBase]: For 1347/1349 co-relation queries the response was YES. [2024-11-13 13:14:24,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 382 events. 120/382 cut-off events. For 1347/1349 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1918 event pairs, 30 based on Foata normal form. 5/387 useless extension candidates. Maximal degree in co-relation 1532. Up to 144 conditions per place. [2024-11-13 13:14:24,991 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 90 selfloop transitions, 37 changer transitions 0/129 dead transitions. [2024-11-13 13:14:24,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 129 transitions, 1420 flow [2024-11-13 13:14:24,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:14:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 13:14:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 167 transitions. [2024-11-13 13:14:24,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3847926267281106 [2024-11-13 13:14:24,993 INFO L175 Difference]: Start difference. First operand has 156 places, 102 transitions, 1017 flow. Second operand 14 states and 167 transitions. [2024-11-13 13:14:24,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 129 transitions, 1420 flow [2024-11-13 13:14:25,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 129 transitions, 1373 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-11-13 13:14:25,010 INFO L231 Difference]: Finished difference. Result has 167 places, 110 transitions, 1195 flow [2024-11-13 13:14:25,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1195, PETRI_PLACES=167, PETRI_TRANSITIONS=110} [2024-11-13 13:14:25,011 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 134 predicate places. [2024-11-13 13:14:25,012 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 110 transitions, 1195 flow [2024-11-13 13:14:25,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:25,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:25,012 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:25,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 13:14:25,012 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:14:25,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:25,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1403475620, now seen corresponding path program 4 times [2024-11-13 13:14:25,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:25,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094778646] [2024-11-13 13:14:25,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:25,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:14:30,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:30,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094778646] [2024-11-13 13:14:30,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094778646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:30,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:30,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 13:14:30,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834362996] [2024-11-13 13:14:30,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:30,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:14:30,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:30,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:14:30,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:14:30,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-11-13 13:14:30,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 110 transitions, 1195 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:30,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:30,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-11-13 13:14:30,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:31,903 INFO L124 PetriNetUnfolderBase]: 129/415 cut-off events. [2024-11-13 13:14:31,903 INFO L125 PetriNetUnfolderBase]: For 1754/1756 co-relation queries the response was YES. [2024-11-13 13:14:31,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1839 conditions, 415 events. 129/415 cut-off events. For 1754/1756 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2191 event pairs, 37 based on Foata normal form. 5/420 useless extension candidates. Maximal degree in co-relation 1709. Up to 174 conditions per place. [2024-11-13 13:14:31,908 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 88 selfloop transitions, 42 changer transitions 0/132 dead transitions. [2024-11-13 13:14:31,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 132 transitions, 1547 flow [2024-11-13 13:14:31,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:14:31,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 13:14:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 170 transitions. [2024-11-13 13:14:31,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-11-13 13:14:31,910 INFO L175 Difference]: Start difference. First operand has 167 places, 110 transitions, 1195 flow. Second operand 15 states and 170 transitions. [2024-11-13 13:14:31,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 132 transitions, 1547 flow [2024-11-13 13:14:31,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 132 transitions, 1503 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-13 13:14:31,929 INFO L231 Difference]: Finished difference. Result has 178 places, 114 transitions, 1316 flow [2024-11-13 13:14:31,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1316, PETRI_PLACES=178, PETRI_TRANSITIONS=114} [2024-11-13 13:14:31,930 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 145 predicate places. [2024-11-13 13:14:31,932 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 114 transitions, 1316 flow [2024-11-13 13:14:31,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:31,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:31,932 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:31,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 13:14:31,932 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:14:31,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:31,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1976652112, now seen corresponding path program 5 times [2024-11-13 13:14:31,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:31,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894137489] [2024-11-13 13:14:31,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:31,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:33,560 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:14:33,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:33,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894137489] [2024-11-13 13:14:33,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894137489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:33,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:33,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:14:33,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131507738] [2024-11-13 13:14:33,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:33,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:14:33,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:33,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:14:33,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:14:33,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-11-13 13:14:33,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 114 transitions, 1316 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:33,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:33,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-11-13 13:14:33,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:34,473 INFO L124 PetriNetUnfolderBase]: 131/425 cut-off events. [2024-11-13 13:14:34,473 INFO L125 PetriNetUnfolderBase]: For 2155/2157 co-relation queries the response was YES. [2024-11-13 13:14:34,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1963 conditions, 425 events. 131/425 cut-off events. For 2155/2157 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2298 event pairs, 28 based on Foata normal form. 5/430 useless extension candidates. Maximal degree in co-relation 1830. Up to 154 conditions per place. [2024-11-13 13:14:34,477 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 93 selfloop transitions, 55 changer transitions 0/150 dead transitions. [2024-11-13 13:14:34,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 150 transitions, 1841 flow [2024-11-13 13:14:34,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 13:14:34,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-13 13:14:34,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 188 transitions. [2024-11-13 13:14:34,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3567362428842505 [2024-11-13 13:14:34,479 INFO L175 Difference]: Start difference. First operand has 178 places, 114 transitions, 1316 flow. Second operand 17 states and 188 transitions. [2024-11-13 13:14:34,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 150 transitions, 1841 flow [2024-11-13 13:14:34,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 150 transitions, 1750 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-11-13 13:14:34,494 INFO L231 Difference]: Finished difference. Result has 190 places, 128 transitions, 1504 flow [2024-11-13 13:14:34,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1504, PETRI_PLACES=190, PETRI_TRANSITIONS=128} [2024-11-13 13:14:34,495 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 157 predicate places. [2024-11-13 13:14:34,495 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 128 transitions, 1504 flow [2024-11-13 13:14:34,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:34,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:34,496 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:34,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 13:14:34,496 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:14:34,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:34,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1750472112, now seen corresponding path program 1 times [2024-11-13 13:14:34,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:34,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053332689] [2024-11-13 13:14:34,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:34,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:14:38,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:38,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053332689] [2024-11-13 13:14:38,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053332689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:38,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:38,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:14:38,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734083611] [2024-11-13 13:14:38,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:38,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:14:38,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:38,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:14:38,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:14:38,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-13 13:14:38,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 128 transitions, 1504 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:38,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:38,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-13 13:14:38,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:40,467 INFO L124 PetriNetUnfolderBase]: 99/381 cut-off events. [2024-11-13 13:14:40,467 INFO L125 PetriNetUnfolderBase]: For 2362/2364 co-relation queries the response was YES. [2024-11-13 13:14:40,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1891 conditions, 381 events. 99/381 cut-off events. For 2362/2364 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2139 event pairs, 37 based on Foata normal form. 9/388 useless extension candidates. Maximal degree in co-relation 1774. Up to 184 conditions per place. [2024-11-13 13:14:40,478 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 75 selfloop transitions, 19 changer transitions 28/141 dead transitions. [2024-11-13 13:14:40,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 141 transitions, 1791 flow [2024-11-13 13:14:40,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:14:40,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 13:14:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-11-13 13:14:40,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45878136200716846 [2024-11-13 13:14:40,480 INFO L175 Difference]: Start difference. First operand has 190 places, 128 transitions, 1504 flow. Second operand 9 states and 128 transitions. [2024-11-13 13:14:40,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 141 transitions, 1791 flow [2024-11-13 13:14:40,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 141 transitions, 1685 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-11-13 13:14:40,514 INFO L231 Difference]: Finished difference. Result has 187 places, 108 transitions, 1132 flow [2024-11-13 13:14:40,517 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1132, PETRI_PLACES=187, PETRI_TRANSITIONS=108} [2024-11-13 13:14:40,517 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 154 predicate places. [2024-11-13 13:14:40,518 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 108 transitions, 1132 flow [2024-11-13 13:14:40,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:40,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:40,518 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:40,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 13:14:40,518 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:14:40,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:40,519 INFO L85 PathProgramCache]: Analyzing trace with hash -220248632, now seen corresponding path program 1 times [2024-11-13 13:14:40,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:40,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892786110] [2024-11-13 13:14:40,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:40,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:14:45,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:45,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892786110] [2024-11-13 13:14:45,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892786110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:45,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:45,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:14:45,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406028800] [2024-11-13 13:14:45,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:45,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:14:45,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:45,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:14:45,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:14:45,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-13 13:14:45,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 108 transitions, 1132 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:45,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:45,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-13 13:14:45,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:47,286 INFO L124 PetriNetUnfolderBase]: 76/312 cut-off events. [2024-11-13 13:14:47,287 INFO L125 PetriNetUnfolderBase]: For 1650/1652 co-relation queries the response was YES. [2024-11-13 13:14:47,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 312 events. 76/312 cut-off events. For 1650/1652 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1611 event pairs, 36 based on Foata normal form. 5/315 useless extension candidates. Maximal degree in co-relation 1350. Up to 184 conditions per place. [2024-11-13 13:14:47,290 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 66 selfloop transitions, 25 changer transitions 12/122 dead transitions. [2024-11-13 13:14:47,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 122 transitions, 1406 flow [2024-11-13 13:14:47,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:14:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 13:14:47,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 176 transitions. [2024-11-13 13:14:47,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-11-13 13:14:47,292 INFO L175 Difference]: Start difference. First operand has 187 places, 108 transitions, 1132 flow. Second operand 14 states and 176 transitions. [2024-11-13 13:14:47,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 122 transitions, 1406 flow [2024-11-13 13:14:47,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 122 transitions, 1329 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-11-13 13:14:47,304 INFO L231 Difference]: Finished difference. Result has 186 places, 104 transitions, 1080 flow [2024-11-13 13:14:47,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1080, PETRI_PLACES=186, PETRI_TRANSITIONS=104} [2024-11-13 13:14:47,305 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 153 predicate places. [2024-11-13 13:14:47,305 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 104 transitions, 1080 flow [2024-11-13 13:14:47,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:47,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:47,306 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:47,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 13:14:47,306 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:14:47,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:47,307 INFO L85 PathProgramCache]: Analyzing trace with hash 739894480, now seen corresponding path program 1 times [2024-11-13 13:14:47,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:47,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073365535] [2024-11-13 13:14:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:47,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:14:51,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:51,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073365535] [2024-11-13 13:14:51,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073365535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:51,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:51,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:14:51,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416097226] [2024-11-13 13:14:51,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:51,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:14:51,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:51,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:14:51,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:14:51,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-13 13:14:51,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 104 transitions, 1080 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:51,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:51,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-13 13:14:51,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:52,059 INFO L124 PetriNetUnfolderBase]: 80/305 cut-off events. [2024-11-13 13:14:52,059 INFO L125 PetriNetUnfolderBase]: For 1264/1264 co-relation queries the response was YES. [2024-11-13 13:14:52,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1428 conditions, 305 events. 80/305 cut-off events. For 1264/1264 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1490 event pairs, 26 based on Foata normal form. 2/307 useless extension candidates. Maximal degree in co-relation 1313. Up to 134 conditions per place. [2024-11-13 13:14:52,063 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 74 selfloop transitions, 26 changer transitions 0/112 dead transitions. [2024-11-13 13:14:52,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 112 transitions, 1291 flow [2024-11-13 13:14:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:14:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:14:52,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-11-13 13:14:52,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-11-13 13:14:52,065 INFO L175 Difference]: Start difference. First operand has 186 places, 104 transitions, 1080 flow. Second operand 11 states and 130 transitions. [2024-11-13 13:14:52,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 112 transitions, 1291 flow [2024-11-13 13:14:52,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 112 transitions, 1210 flow, removed 2 selfloop flow, removed 18 redundant places. [2024-11-13 13:14:52,077 INFO L231 Difference]: Finished difference. Result has 171 places, 103 transitions, 1037 flow [2024-11-13 13:14:52,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1037, PETRI_PLACES=171, PETRI_TRANSITIONS=103} [2024-11-13 13:14:52,078 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 138 predicate places. [2024-11-13 13:14:52,078 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 103 transitions, 1037 flow [2024-11-13 13:14:52,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:52,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:52,078 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:52,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-13 13:14:52,079 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:14:52,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:52,079 INFO L85 PathProgramCache]: Analyzing trace with hash 738681680, now seen corresponding path program 2 times [2024-11-13 13:14:52,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:52,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974970140] [2024-11-13 13:14:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:52,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:57,021 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:14:57,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:57,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974970140] [2024-11-13 13:14:57,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974970140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:57,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:57,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:14:57,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485941059] [2024-11-13 13:14:57,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:57,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:14:57,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:57,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:14:57,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:14:57,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-13 13:14:57,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 103 transitions, 1037 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:57,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:57,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-13 13:14:57,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:58,855 INFO L124 PetriNetUnfolderBase]: 68/287 cut-off events. [2024-11-13 13:14:58,855 INFO L125 PetriNetUnfolderBase]: For 1161/1161 co-relation queries the response was YES. [2024-11-13 13:14:58,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 287 events. 68/287 cut-off events. For 1161/1161 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1449 event pairs, 28 based on Foata normal form. 3/286 useless extension candidates. Maximal degree in co-relation 1177. Up to 159 conditions per place. [2024-11-13 13:14:58,858 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 67 selfloop transitions, 26 changer transitions 7/118 dead transitions. [2024-11-13 13:14:58,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 118 transitions, 1293 flow [2024-11-13 13:14:58,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:14:58,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 13:14:58,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-11-13 13:14:58,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40694789081885857 [2024-11-13 13:14:58,860 INFO L175 Difference]: Start difference. First operand has 171 places, 103 transitions, 1037 flow. Second operand 13 states and 164 transitions. [2024-11-13 13:14:58,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 118 transitions, 1293 flow [2024-11-13 13:14:58,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 118 transitions, 1247 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-11-13 13:14:58,874 INFO L231 Difference]: Finished difference. Result has 175 places, 99 transitions, 1016 flow [2024-11-13 13:14:58,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1016, PETRI_PLACES=175, PETRI_TRANSITIONS=99} [2024-11-13 13:14:58,875 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 142 predicate places. [2024-11-13 13:14:58,875 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 99 transitions, 1016 flow [2024-11-13 13:14:58,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:58,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:58,876 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:58,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-13 13:14:58,876 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:14:58,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:58,877 INFO L85 PathProgramCache]: Analyzing trace with hash 702932480, now seen corresponding path program 3 times [2024-11-13 13:14:58,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:58,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803192066] [2024-11-13 13:14:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:58,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:15:04,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:04,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803192066] [2024-11-13 13:15:04,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803192066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:04,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:04,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:15:04,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96022248] [2024-11-13 13:15:04,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:04,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:15:04,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:04,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:15:04,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:15:04,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-13 13:15:04,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 99 transitions, 1016 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:04,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:15:04,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-13 13:15:04,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:15:06,566 INFO L124 PetriNetUnfolderBase]: 62/269 cut-off events. [2024-11-13 13:15:06,566 INFO L125 PetriNetUnfolderBase]: For 1185/1185 co-relation queries the response was YES. [2024-11-13 13:15:06,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 269 events. 62/269 cut-off events. For 1185/1185 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1297 event pairs, 26 based on Foata normal form. 6/274 useless extension candidates. Maximal degree in co-relation 1192. Up to 143 conditions per place. [2024-11-13 13:15:06,570 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 59 selfloop transitions, 22 changer transitions 16/110 dead transitions. [2024-11-13 13:15:06,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 110 transitions, 1237 flow [2024-11-13 13:15:06,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:15:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 13:15:06,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-11-13 13:15:06,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39950372208436724 [2024-11-13 13:15:06,572 INFO L175 Difference]: Start difference. First operand has 175 places, 99 transitions, 1016 flow. Second operand 13 states and 161 transitions. [2024-11-13 13:15:06,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 110 transitions, 1237 flow [2024-11-13 13:15:06,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 110 transitions, 1165 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-11-13 13:15:06,580 INFO L231 Difference]: Finished difference. Result has 171 places, 88 transitions, 870 flow [2024-11-13 13:15:06,580 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=870, PETRI_PLACES=171, PETRI_TRANSITIONS=88} [2024-11-13 13:15:06,581 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 138 predicate places. [2024-11-13 13:15:06,581 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 88 transitions, 870 flow [2024-11-13 13:15:06,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:06,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:15:06,581 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:06,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 13:15:06,581 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:15:06,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:06,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1688002628, now seen corresponding path program 1 times [2024-11-13 13:15:06,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:06,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39166689] [2024-11-13 13:15:06,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:06,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:15:08,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:08,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39166689] [2024-11-13 13:15:08,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39166689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:08,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:08,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:15:08,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475496268] [2024-11-13 13:15:08,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:08,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:15:08,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:08,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:15:08,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:15:08,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-11-13 13:15:08,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 88 transitions, 870 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:08,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:15:08,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-11-13 13:15:08,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:15:09,168 INFO L124 PetriNetUnfolderBase]: 58/240 cut-off events. [2024-11-13 13:15:09,169 INFO L125 PetriNetUnfolderBase]: For 956/956 co-relation queries the response was YES. [2024-11-13 13:15:09,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 240 events. 58/240 cut-off events. For 956/956 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1019 event pairs, 11 based on Foata normal form. 2/242 useless extension candidates. Maximal degree in co-relation 1032. Up to 61 conditions per place. [2024-11-13 13:15:09,172 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 57 selfloop transitions, 38 changer transitions 0/103 dead transitions. [2024-11-13 13:15:09,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 103 transitions, 1133 flow [2024-11-13 13:15:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:15:09,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 13:15:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-11-13 13:15:09,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3746898263027295 [2024-11-13 13:15:09,177 INFO L175 Difference]: Start difference. First operand has 171 places, 88 transitions, 870 flow. Second operand 13 states and 151 transitions. [2024-11-13 13:15:09,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 103 transitions, 1133 flow [2024-11-13 13:15:09,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 103 transitions, 1003 flow, removed 7 selfloop flow, removed 22 redundant places. [2024-11-13 13:15:09,188 INFO L231 Difference]: Finished difference. Result has 149 places, 95 transitions, 867 flow [2024-11-13 13:15:09,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=867, PETRI_PLACES=149, PETRI_TRANSITIONS=95} [2024-11-13 13:15:09,189 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 116 predicate places. [2024-11-13 13:15:09,190 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 95 transitions, 867 flow [2024-11-13 13:15:09,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:09,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:15:09,191 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:09,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-13 13:15:09,191 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:15:09,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:09,192 INFO L85 PathProgramCache]: Analyzing trace with hash -206958870, now seen corresponding path program 4 times [2024-11-13 13:15:09,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:09,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148552550] [2024-11-13 13:15:09,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:09,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:15,896 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:15:15,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:15,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148552550] [2024-11-13 13:15:15,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148552550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:15,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:15,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:15:15,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899563594] [2024-11-13 13:15:15,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:15,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:15:15,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:15,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:15:15,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:15:16,022 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-13 13:15:16,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 95 transitions, 867 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:16,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:15:16,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-13 13:15:16,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:15:18,559 INFO L124 PetriNetUnfolderBase]: 53/229 cut-off events. [2024-11-13 13:15:18,559 INFO L125 PetriNetUnfolderBase]: For 637/637 co-relation queries the response was YES. [2024-11-13 13:15:18,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1004 conditions, 229 events. 53/229 cut-off events. For 637/637 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 969 event pairs, 15 based on Foata normal form. 3/231 useless extension candidates. Maximal degree in co-relation 883. Up to 126 conditions per place. [2024-11-13 13:15:18,562 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 62 selfloop transitions, 16 changer transitions 12/102 dead transitions. [2024-11-13 13:15:18,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 102 transitions, 1059 flow [2024-11-13 13:15:18,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:15:18,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 13:15:18,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-11-13 13:15:18,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3970223325062035 [2024-11-13 13:15:18,567 INFO L175 Difference]: Start difference. First operand has 149 places, 95 transitions, 867 flow. Second operand 13 states and 160 transitions. [2024-11-13 13:15:18,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 102 transitions, 1059 flow [2024-11-13 13:15:18,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 102 transitions, 1000 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-11-13 13:15:18,572 INFO L231 Difference]: Finished difference. Result has 152 places, 87 transitions, 770 flow [2024-11-13 13:15:18,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=770, PETRI_PLACES=152, PETRI_TRANSITIONS=87} [2024-11-13 13:15:18,572 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 119 predicate places. [2024-11-13 13:15:18,572 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 87 transitions, 770 flow [2024-11-13 13:15:18,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:18,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:15:18,573 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:18,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-13 13:15:18,573 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:15:18,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:18,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2041125970, now seen corresponding path program 2 times [2024-11-13 13:15:18,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:18,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378891165] [2024-11-13 13:15:18,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:18,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:15:24,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:24,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378891165] [2024-11-13 13:15:24,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378891165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:24,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:24,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 13:15:24,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795923540] [2024-11-13 13:15:24,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:24,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:15:24,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:24,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:15:24,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:15:24,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-13 13:15:24,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 87 transitions, 770 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:24,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:15:24,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-13 13:15:24,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:15:27,107 INFO L124 PetriNetUnfolderBase]: 54/240 cut-off events. [2024-11-13 13:15:27,107 INFO L125 PetriNetUnfolderBase]: For 592/592 co-relation queries the response was YES. [2024-11-13 13:15:27,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 240 events. 54/240 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1101 event pairs, 15 based on Foata normal form. 9/248 useless extension candidates. Maximal degree in co-relation 963. Up to 103 conditions per place. [2024-11-13 13:15:27,110 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 59 selfloop transitions, 11 changer transitions 23/103 dead transitions. [2024-11-13 13:15:27,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 103 transitions, 1053 flow [2024-11-13 13:15:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:15:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:15:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-11-13 13:15:27,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-11-13 13:15:27,113 INFO L175 Difference]: Start difference. First operand has 152 places, 87 transitions, 770 flow. Second operand 11 states and 140 transitions. [2024-11-13 13:15:27,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 103 transitions, 1053 flow [2024-11-13 13:15:27,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 103 transitions, 1006 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-11-13 13:15:27,120 INFO L231 Difference]: Finished difference. Result has 142 places, 76 transitions, 627 flow [2024-11-13 13:15:27,120 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=627, PETRI_PLACES=142, PETRI_TRANSITIONS=76} [2024-11-13 13:15:27,125 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 109 predicate places. [2024-11-13 13:15:27,126 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 76 transitions, 627 flow [2024-11-13 13:15:27,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:27,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:15:27,126 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:27,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-13 13:15:27,126 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:15:27,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:27,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1146673764, now seen corresponding path program 3 times [2024-11-13 13:15:27,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:27,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647643042] [2024-11-13 13:15:27,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:27,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:15:29,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:29,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647643042] [2024-11-13 13:15:29,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647643042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:29,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:29,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:15:29,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905497965] [2024-11-13 13:15:29,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:29,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:15:29,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:29,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:15:29,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:15:29,205 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-13 13:15:29,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 76 transitions, 627 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:29,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:15:29,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-13 13:15:29,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:15:30,127 INFO L124 PetriNetUnfolderBase]: 37/172 cut-off events. [2024-11-13 13:15:30,127 INFO L125 PetriNetUnfolderBase]: For 441/441 co-relation queries the response was YES. [2024-11-13 13:15:30,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 172 events. 37/172 cut-off events. For 441/441 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 593 event pairs, 5 based on Foata normal form. 3/175 useless extension candidates. Maximal degree in co-relation 639. Up to 73 conditions per place. [2024-11-13 13:15:30,129 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 16 changer transitions 11/89 dead transitions. [2024-11-13 13:15:30,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 89 transitions, 825 flow [2024-11-13 13:15:30,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:15:30,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 13:15:30,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 174 transitions. [2024-11-13 13:15:30,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-11-13 13:15:30,131 INFO L175 Difference]: Start difference. First operand has 142 places, 76 transitions, 627 flow. Second operand 14 states and 174 transitions. [2024-11-13 13:15:30,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 89 transitions, 825 flow [2024-11-13 13:15:30,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 89 transitions, 760 flow, removed 12 selfloop flow, removed 16 redundant places. [2024-11-13 13:15:30,137 INFO L231 Difference]: Finished difference. Result has 133 places, 71 transitions, 559 flow [2024-11-13 13:15:30,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=559, PETRI_PLACES=133, PETRI_TRANSITIONS=71} [2024-11-13 13:15:30,138 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 100 predicate places. [2024-11-13 13:15:30,138 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 71 transitions, 559 flow [2024-11-13 13:15:30,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:30,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:15:30,139 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:30,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-13 13:15:30,139 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:15:30,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash -541915170, now seen corresponding path program 4 times [2024-11-13 13:15:30,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:30,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509152057] [2024-11-13 13:15:30,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:30,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:33,947 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:15:33,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:33,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509152057] [2024-11-13 13:15:33,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509152057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:33,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:33,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:15:33,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153620308] [2024-11-13 13:15:33,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:33,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:15:33,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:33,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:15:33,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:15:34,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-13 13:15:34,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 71 transitions, 559 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:34,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:15:34,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-13 13:15:34,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:15:35,257 INFO L124 PetriNetUnfolderBase]: 33/175 cut-off events. [2024-11-13 13:15:35,257 INFO L125 PetriNetUnfolderBase]: For 437/437 co-relation queries the response was YES. [2024-11-13 13:15:35,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 175 events. 33/175 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 631 event pairs, 13 based on Foata normal form. 6/181 useless extension candidates. Maximal degree in co-relation 635. Up to 67 conditions per place. [2024-11-13 13:15:35,259 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 51 selfloop transitions, 12 changer transitions 12/84 dead transitions. [2024-11-13 13:15:35,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 84 transitions, 784 flow [2024-11-13 13:15:35,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:15:35,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:15:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-11-13 13:15:35,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-11-13 13:15:35,261 INFO L175 Difference]: Start difference. First operand has 133 places, 71 transitions, 559 flow. Second operand 11 states and 139 transitions. [2024-11-13 13:15:35,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 84 transitions, 784 flow [2024-11-13 13:15:35,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 84 transitions, 713 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-11-13 13:15:35,266 INFO L231 Difference]: Finished difference. Result has 127 places, 68 transitions, 515 flow [2024-11-13 13:15:35,267 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=515, PETRI_PLACES=127, PETRI_TRANSITIONS=68} [2024-11-13 13:15:35,267 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 94 predicate places. [2024-11-13 13:15:35,267 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 68 transitions, 515 flow [2024-11-13 13:15:35,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:35,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:15:35,268 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:35,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-13 13:15:35,268 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:15:35,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:35,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1461892817, now seen corresponding path program 1 times [2024-11-13 13:15:35,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:35,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727115268] [2024-11-13 13:15:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:35,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:39,295 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:15:39,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:39,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727115268] [2024-11-13 13:15:39,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727115268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:39,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:39,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:15:39,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745626137] [2024-11-13 13:15:39,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:39,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:15:39,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:39,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:15:39,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:15:39,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-13 13:15:39,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 68 transitions, 515 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:39,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:15:39,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-13 13:15:39,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:15:40,304 INFO L124 PetriNetUnfolderBase]: 24/136 cut-off events. [2024-11-13 13:15:40,304 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2024-11-13 13:15:40,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 136 events. 24/136 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 356 event pairs, 7 based on Foata normal form. 2/138 useless extension candidates. Maximal degree in co-relation 487. Up to 51 conditions per place. [2024-11-13 13:15:40,305 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 42 selfloop transitions, 8 changer transitions 15/72 dead transitions. [2024-11-13 13:15:40,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 72 transitions, 646 flow [2024-11-13 13:15:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:15:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 13:15:40,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-11-13 13:15:40,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-11-13 13:15:40,308 INFO L175 Difference]: Start difference. First operand has 127 places, 68 transitions, 515 flow. Second operand 10 states and 122 transitions. [2024-11-13 13:15:40,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 72 transitions, 646 flow [2024-11-13 13:15:40,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 72 transitions, 601 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-11-13 13:15:40,312 INFO L231 Difference]: Finished difference. Result has 118 places, 57 transitions, 429 flow [2024-11-13 13:15:40,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=429, PETRI_PLACES=118, PETRI_TRANSITIONS=57} [2024-11-13 13:15:40,313 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 85 predicate places. [2024-11-13 13:15:40,314 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 57 transitions, 429 flow [2024-11-13 13:15:40,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:40,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:15:40,314 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:40,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-13 13:15:40,315 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:15:40,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:40,315 INFO L85 PathProgramCache]: Analyzing trace with hash 952363054, now seen corresponding path program 1 times [2024-11-13 13:15:40,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:40,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845774133] [2024-11-13 13:15:40,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:40,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:15:51,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:51,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845774133] [2024-11-13 13:15:51,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845774133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:51,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:51,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:15:51,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615939695] [2024-11-13 13:15:51,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:51,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:15:51,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:51,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:15:51,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:15:51,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-13 13:15:51,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 57 transitions, 429 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:51,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:15:51,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-13 13:15:51,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:15:52,269 INFO L124 PetriNetUnfolderBase]: 13/95 cut-off events. [2024-11-13 13:15:52,270 INFO L125 PetriNetUnfolderBase]: For 239/243 co-relation queries the response was YES. [2024-11-13 13:15:52,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 95 events. 13/95 cut-off events. For 239/243 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 179 event pairs, 2 based on Foata normal form. 8/103 useless extension candidates. Maximal degree in co-relation 377. Up to 26 conditions per place. [2024-11-13 13:15:52,270 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 38 selfloop transitions, 3 changer transitions 18/63 dead transitions. [2024-11-13 13:15:52,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 63 transitions, 569 flow [2024-11-13 13:15:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:15:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 13:15:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-11-13 13:15:52,272 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-11-13 13:15:52,272 INFO L175 Difference]: Start difference. First operand has 118 places, 57 transitions, 429 flow. Second operand 8 states and 100 transitions. [2024-11-13 13:15:52,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 63 transitions, 569 flow [2024-11-13 13:15:52,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 63 transitions, 523 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-11-13 13:15:52,275 INFO L231 Difference]: Finished difference. Result has 96 places, 45 transitions, 313 flow [2024-11-13 13:15:52,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=313, PETRI_PLACES=96, PETRI_TRANSITIONS=45} [2024-11-13 13:15:52,275 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 63 predicate places. [2024-11-13 13:15:52,276 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 45 transitions, 313 flow [2024-11-13 13:15:52,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:52,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:15:52,276 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:52,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-13 13:15:52,276 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-13 13:15:52,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:52,277 INFO L85 PathProgramCache]: Analyzing trace with hash -788473480, now seen corresponding path program 2 times [2024-11-13 13:15:52,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:52,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454444964] [2024-11-13 13:15:52,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:52,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 13:15:54,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:54,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454444964] [2024-11-13 13:15:54,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454444964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:15:54,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:15:54,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:15:54,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692364027] [2024-11-13 13:15:54,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:15:54,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:15:54,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:54,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:15:54,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:15:54,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-11-13 13:15:54,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 45 transitions, 313 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:54,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:15:54,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-11-13 13:15:54,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:15:55,011 INFO L124 PetriNetUnfolderBase]: 6/58 cut-off events. [2024-11-13 13:15:55,011 INFO L125 PetriNetUnfolderBase]: For 160/162 co-relation queries the response was YES. [2024-11-13 13:15:55,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 58 events. 6/58 cut-off events. For 160/162 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 4/62 useless extension candidates. Maximal degree in co-relation 230. Up to 26 conditions per place. [2024-11-13 13:15:55,012 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2024-11-13 13:15:55,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 46 transitions, 402 flow [2024-11-13 13:15:55,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:15:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 13:15:55,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-11-13 13:15:55,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-11-13 13:15:55,013 INFO L175 Difference]: Start difference. First operand has 96 places, 45 transitions, 313 flow. Second operand 10 states and 114 transitions. [2024-11-13 13:15:55,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 46 transitions, 402 flow [2024-11-13 13:15:55,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 46 transitions, 363 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-11-13 13:15:55,015 INFO L231 Difference]: Finished difference. Result has 78 places, 0 transitions, 0 flow [2024-11-13 13:15:55,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=78, PETRI_TRANSITIONS=0} [2024-11-13 13:15:55,016 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 45 predicate places. [2024-11-13 13:15:55,016 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 0 transitions, 0 flow [2024-11-13 13:15:55,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:55,020 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2024-11-13 13:15:55,021 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-13 13:15:55,021 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-13 13:15:55,021 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-13 13:15:55,022 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2024-11-13 13:15:55,022 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-13 13:15:55,022 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-13 13:15:55,022 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-13 13:15:55,022 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-13 13:15:55,022 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-13 13:15:55,023 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-13 13:15:55,023 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-13 13:15:55,023 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-13 13:15:55,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-13 13:15:55,024 INFO L407 BasicCegarLoop]: Path program histogram: [5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:55,031 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 13:15:55,031 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:15:55,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:15:55 BasicIcfg [2024-11-13 13:15:55,038 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:15:55,039 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:15:55,039 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:15:55,039 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:15:55,040 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:13:01" (3/4) ... [2024-11-13 13:15:55,042 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 13:15:55,046 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-13 13:15:55,052 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2024-11-13 13:15:55,053 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-13 13:15:55,053 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 13:15:55,156 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 13:15:55,157 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 13:15:55,157 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:15:55,158 INFO L158 Benchmark]: Toolchain (without parser) took 175623.42ms. Allocated memory was 117.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 91.0MB in the beginning and 781.9MB in the end (delta: -690.9MB). Peak memory consumption was 422.2MB. Max. memory is 16.1GB. [2024-11-13 13:15:55,158 INFO L158 Benchmark]: CDTParser took 2.34ms. Allocated memory is still 117.4MB. Free memory is still 73.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:15:55,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 760.84ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 60.8MB in the end (delta: 29.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-13 13:15:55,159 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.20ms. Allocated memory is still 117.4MB. Free memory was 60.8MB in the beginning and 58.1MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:15:55,159 INFO L158 Benchmark]: Boogie Preprocessor took 67.70ms. Allocated memory is still 117.4MB. Free memory was 58.1MB in the beginning and 55.5MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:15:55,159 INFO L158 Benchmark]: RCFGBuilder took 1517.72ms. Allocated memory is still 117.4MB. Free memory was 55.5MB in the beginning and 44.4MB in the end (delta: 11.2MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. [2024-11-13 13:15:55,160 INFO L158 Benchmark]: TraceAbstraction took 173095.75ms. Allocated memory was 117.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 43.4MB in the beginning and 790.2MB in the end (delta: -746.8MB). Peak memory consumption was 371.6MB. Max. memory is 16.1GB. [2024-11-13 13:15:55,160 INFO L158 Benchmark]: Witness Printer took 118.43ms. Allocated memory is still 1.2GB. Free memory was 790.2MB in the beginning and 781.9MB in the end (delta: 8.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:15:55,162 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.34ms. Allocated memory is still 117.4MB. Free memory is still 73.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 760.84ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 60.8MB in the end (delta: 29.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.20ms. Allocated memory is still 117.4MB. Free memory was 60.8MB in the beginning and 58.1MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 67.70ms. Allocated memory is still 117.4MB. Free memory was 58.1MB in the beginning and 55.5MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1517.72ms. Allocated memory is still 117.4MB. Free memory was 55.5MB in the beginning and 44.4MB in the end (delta: 11.2MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. * TraceAbstraction took 173095.75ms. Allocated memory was 117.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 43.4MB in the beginning and 790.2MB in the end (delta: -746.8MB). Peak memory consumption was 371.6MB. Max. memory is 16.1GB. * Witness Printer took 118.43ms. Allocated memory is still 1.2GB. Free memory was 790.2MB in the beginning and 781.9MB in the end (delta: 8.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 937]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 937]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 944]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 944]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 932]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 932]: 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 3 procedures, 46 locations, 13 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: 173.0s, OverallIterations: 33, TraceHistogramMax: 10, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 43.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1640 SdHoareTripleChecker+Valid, 12.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1487 mSDsluCounter, 1781 SdHoareTripleChecker+Invalid, 10.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1716 mSDsCounter, 150 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6117 IncrementalHoareTripleChecker+Invalid, 6267 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 150 mSolverCounterUnsat, 65 mSDtfsCounter, 6117 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 609 GetRequests, 133 SyntacticMatches, 11 SemanticMatches, 465 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1361 ImplicationChecksByTransitivity, 47.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1504occurred in iteration=20, InterpolantAutomatonStates: 366, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 125.1s InterpolantComputationTime, 1294 NumberOfCodeBlocks, 1264 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1309 ConstructedInterpolants, 0 QuantifiedInterpolants, 103002 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1608 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 42 InterpolantComputations, 30 PerfectInterpolantSequences, 3504/3837 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 13:15:55,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f503b8c-86b9-4f6a-a353-052cfc0f2a77/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE