./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c --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_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/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_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/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_c5ee6dd7-1c93-4690-88fc-e601e64208be/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 e4b995352c2aa614292d7ca8e2ab060aead2140bac61fbd718d54a02f08e13c4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:26:27,018 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:26:27,119 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 14:26:27,127 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:26:27,127 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:26:27,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:26:27,165 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:26:27,165 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:26:27,166 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:26:27,166 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:26:27,167 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:26:27,167 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:26:27,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:26:27,168 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:26:27,168 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:26:27,169 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:26:27,169 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:26:27,169 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:26:27,169 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:26:27,169 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:26:27,170 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:26:27,170 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:26:27,170 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:26:27,170 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:26:27,170 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:26:27,170 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 14:26:27,170 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:26:27,170 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:26:27,170 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:26:27,171 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:26:27,171 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:26:27,171 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:26:27,171 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:26:27,171 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:26:27,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:26:27,171 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:26:27,172 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:26:27,172 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:26:27,173 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:26:27,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:26:27,173 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:26:27,173 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:26:27,173 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:26:27,173 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:26:27,173 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_c5ee6dd7-1c93-4690-88fc-e601e64208be/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 -> e4b995352c2aa614292d7ca8e2ab060aead2140bac61fbd718d54a02f08e13c4 [2024-11-13 14:26:27,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:26:27,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:26:27,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:26:27,589 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:26:27,590 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:26:27,591 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c Unable to find full path for "g++" [2024-11-13 14:26:29,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:26:30,169 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:26:30,170 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2024-11-13 14:26:30,180 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/data/80a92a660/7bd0967687cb414a8fb8890144e561c2/FLAG23f334c5f [2024-11-13 14:26:30,206 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/data/80a92a660/7bd0967687cb414a8fb8890144e561c2 [2024-11-13 14:26:30,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:26:30,214 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:26:30,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:26:30,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:26:30,224 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:26:30,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:26:30" (1/1) ... [2024-11-13 14:26:30,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee46d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:30, skipping insertion in model container [2024-11-13 14:26:30,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:26:30" (1/1) ... [2024-11-13 14:26:30,254 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:26:30,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:26:30,530 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:26:30,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:26:30,575 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:26:30,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:30 WrapperNode [2024-11-13 14:26:30,576 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:26:30,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:26:30,578 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:26:30,578 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:26:30,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:30" (1/1) ... [2024-11-13 14:26:30,599 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:30" (1/1) ... [2024-11-13 14:26:30,637 INFO L138 Inliner]: procedures = 16, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2024-11-13 14:26:30,638 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:26:30,638 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:26:30,638 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:26:30,639 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:26:30,658 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:30" (1/1) ... [2024-11-13 14:26:30,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:30" (1/1) ... [2024-11-13 14:26:30,661 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:30" (1/1) ... [2024-11-13 14:26:30,703 INFO L175 MemorySlicer]: Split 30 memory accesses to 5 slices as follows [2, 4, 2, 17, 5]. 57 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 2, 1, 2, 2]. [2024-11-13 14:26:30,703 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:30" (1/1) ... [2024-11-13 14:26:30,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:30" (1/1) ... [2024-11-13 14:26:30,714 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:30" (1/1) ... [2024-11-13 14:26:30,723 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:30" (1/1) ... [2024-11-13 14:26:30,725 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:30" (1/1) ... [2024-11-13 14:26:30,730 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:30" (1/1) ... [2024-11-13 14:26:30,733 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:26:30,734 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:26:30,735 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:26:30,735 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:26:30,736 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:30" (1/1) ... [2024-11-13 14:26:30,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:26:30,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:30,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:26:30,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:26:30,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:26:30,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:26:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:26:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 14:26:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 14:26:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-13 14:26:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:26:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:26:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:26:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 14:26:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 14:26:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-13 14:26:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:26:30,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:26:30,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:26:30,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:26:30,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 14:26:30,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 14:26:30,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-13 14:26:30,834 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2024-11-13 14:26:30,834 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2024-11-13 14:26:30,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 14:26:30,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 14:26:30,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:26:30,970 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:26:30,972 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:26:32,017 INFO L? ?]: Removed 128 outVars from TransFormulas that were not future-live. [2024-11-13 14:26:32,017 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:26:32,047 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:26:32,048 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 14:26:32,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:26:32 BoogieIcfgContainer [2024-11-13 14:26:32,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:26:32,056 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:26:32,056 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:26:32,063 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:26:32,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:26:30" (1/3) ... [2024-11-13 14:26:32,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f650f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:26:32, skipping insertion in model container [2024-11-13 14:26:32,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:30" (2/3) ... [2024-11-13 14:26:32,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f650f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:26:32, skipping insertion in model container [2024-11-13 14:26:32,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:26:32" (3/3) ... [2024-11-13 14:26:32,067 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps3-ll.c [2024-11-13 14:26:32,089 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:26:32,091 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_ps3-ll.c that has 3 procedures, 111 locations, 1 initial locations, 0 loop locations, and 44 error locations. [2024-11-13 14:26:32,159 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:26:32,182 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;@23b7fb39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:26:32,183 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-11-13 14:26:32,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 60 states have (on average 1.7833333333333334) internal successors, (107), 105 states have internal predecessors, (107), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:26:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 14:26:32,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:32,198 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:26:32,199 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:32,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:32,207 INFO L85 PathProgramCache]: Analyzing trace with hash 893120373, now seen corresponding path program 1 times [2024-11-13 14:26:32,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:32,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712670562] [2024-11-13 14:26:32,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:32,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:33,030 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 14:26:33,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:33,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712670562] [2024-11-13 14:26:33,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712670562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:33,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:33,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:26:33,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983487175] [2024-11-13 14:26:33,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:33,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:26:33,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:33,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:26:33,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:26:33,077 INFO L87 Difference]: Start difference. First operand has 111 states, 60 states have (on average 1.7833333333333334) internal successors, (107), 105 states have internal predecessors, (107), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:33,535 INFO L93 Difference]: Finished difference Result 276 states and 293 transitions. [2024-11-13 14:26:33,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:26:33,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-13 14:26:33,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:33,548 INFO L225 Difference]: With dead ends: 276 [2024-11-13 14:26:33,548 INFO L226 Difference]: Without dead ends: 162 [2024-11-13 14:26:33,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:26:33,556 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 137 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:33,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 472 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:26:33,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-13 14:26:33,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 129. [2024-11-13 14:26:33,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.7820512820512822) internal successors, (139), 122 states have internal predecessors, (139), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 14:26:33,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2024-11-13 14:26:33,614 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 6 [2024-11-13 14:26:33,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:33,614 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2024-11-13 14:26:33,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:33,615 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2024-11-13 14:26:33,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 14:26:33,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:33,616 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:33,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:26:33,616 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:33,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:33,620 INFO L85 PathProgramCache]: Analyzing trace with hash -704778089, now seen corresponding path program 1 times [2024-11-13 14:26:33,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:33,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134801485] [2024-11-13 14:26:33,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:33,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:33,910 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 14:26:33,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:33,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134801485] [2024-11-13 14:26:33,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134801485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:33,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:33,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:26:33,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440804443] [2024-11-13 14:26:33,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:33,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:26:33,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:33,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:26:33,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:26:33,915 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:34,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:34,382 INFO L93 Difference]: Finished difference Result 186 states and 189 transitions. [2024-11-13 14:26:34,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:26:34,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-13 14:26:34,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:34,388 INFO L225 Difference]: With dead ends: 186 [2024-11-13 14:26:34,388 INFO L226 Difference]: Without dead ends: 180 [2024-11-13 14:26:34,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:26:34,389 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 131 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:34,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 386 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:26:34,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-13 14:26:34,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 129. [2024-11-13 14:26:34,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.705128205128205) internal successors, (133), 122 states have internal predecessors, (133), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 14:26:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2024-11-13 14:26:34,420 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 142 transitions. Word has length 8 [2024-11-13 14:26:34,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:34,420 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 142 transitions. [2024-11-13 14:26:34,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:34,420 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 142 transitions. [2024-11-13 14:26:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 14:26:34,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:34,421 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:34,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:26:34,421 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:34,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:34,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1226667005, now seen corresponding path program 1 times [2024-11-13 14:26:34,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:34,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100987409] [2024-11-13 14:26:34,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:34,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:35,205 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 14:26:35,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:35,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100987409] [2024-11-13 14:26:35,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100987409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:35,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:35,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:26:35,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836791642] [2024-11-13 14:26:35,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:35,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:26:35,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:26:35,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:26:35,209 INFO L87 Difference]: Start difference. First operand 129 states and 142 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:36,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:36,048 INFO L93 Difference]: Finished difference Result 156 states and 159 transitions. [2024-11-13 14:26:36,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:26:36,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 14:26:36,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:36,050 INFO L225 Difference]: With dead ends: 156 [2024-11-13 14:26:36,050 INFO L226 Difference]: Without dead ends: 155 [2024-11-13 14:26:36,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:26:36,051 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 123 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:36,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 441 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:26:36,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-13 14:26:36,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2024-11-13 14:26:36,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6923076923076923) internal successors, (132), 122 states have internal predecessors, (132), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 14:26:36,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 141 transitions. [2024-11-13 14:26:36,076 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 141 transitions. Word has length 14 [2024-11-13 14:26:36,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:36,080 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 141 transitions. [2024-11-13 14:26:36,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 141 transitions. [2024-11-13 14:26:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 14:26:36,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:36,081 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:36,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:26:36,081 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_26_to_34_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:36,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:36,082 INFO L85 PathProgramCache]: Analyzing trace with hash -628028410, now seen corresponding path program 1 times [2024-11-13 14:26:36,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:36,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008293139] [2024-11-13 14:26:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:36,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:26:36,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491390096] [2024-11-13 14:26:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:36,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:36,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:36,121 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:36,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:26:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:36,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 14:26:36,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:36,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:26:36,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:26:36,502 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 14:26:36,502 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:26:36,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:36,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008293139] [2024-11-13 14:26:36,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:26:36,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491390096] [2024-11-13 14:26:36,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491390096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:36,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:36,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:26:36,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112482467] [2024-11-13 14:26:36,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:36,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:26:36,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:36,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:26:36,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:26:36,509 INFO L87 Difference]: Start difference. First operand 129 states and 141 transitions. Second operand has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:36,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:36,925 INFO L93 Difference]: Finished difference Result 147 states and 150 transitions. [2024-11-13 14:26:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:26:36,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-13 14:26:36,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:36,928 INFO L225 Difference]: With dead ends: 147 [2024-11-13 14:26:36,928 INFO L226 Difference]: Without dead ends: 146 [2024-11-13 14:26:36,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:26:36,929 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 107 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:36,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 461 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:26:36,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-13 14:26:36,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 129. [2024-11-13 14:26:36,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6794871794871795) internal successors, (131), 122 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 14:26:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2024-11-13 14:26:36,941 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 15 [2024-11-13 14:26:36,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:36,942 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2024-11-13 14:26:36,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:36,942 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2024-11-13 14:26:36,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 14:26:36,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:36,943 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:36,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:26:37,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:37,144 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_26_to_34_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:37,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:37,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2005955871, now seen corresponding path program 1 times [2024-11-13 14:26:37,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:37,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711960275] [2024-11-13 14:26:37,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:37,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:37,400 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 14:26:37,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:37,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711960275] [2024-11-13 14:26:37,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711960275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:37,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:37,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:26:37,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496224850] [2024-11-13 14:26:37,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:37,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:26:37,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:37,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:26:37,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:26:37,403 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:37,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:37,639 INFO L93 Difference]: Finished difference Result 178 states and 181 transitions. [2024-11-13 14:26:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:26:37,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-13 14:26:37,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:37,641 INFO L225 Difference]: With dead ends: 178 [2024-11-13 14:26:37,641 INFO L226 Difference]: Without dead ends: 174 [2024-11-13 14:26:37,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:26:37,644 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 99 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:37,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 399 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:26:37,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-13 14:26:37,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 129. [2024-11-13 14:26:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6282051282051282) internal successors, (127), 122 states have internal predecessors, (127), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 14:26:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 136 transitions. [2024-11-13 14:26:37,673 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 136 transitions. Word has length 16 [2024-11-13 14:26:37,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:37,673 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 136 transitions. [2024-11-13 14:26:37,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:37,674 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 136 transitions. [2024-11-13 14:26:37,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:26:37,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:37,674 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:37,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:26:37,675 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_26_to_34_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:37,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:37,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1573701789, now seen corresponding path program 1 times [2024-11-13 14:26:37,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:37,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901370079] [2024-11-13 14:26:37,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:37,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:26:37,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272590173] [2024-11-13 14:26:37,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:37,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:37,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:37,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:37,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:26:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:37,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 14:26:37,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:37,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:26:37,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:26:38,178 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 14:26:38,178 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:26:38,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:38,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901370079] [2024-11-13 14:26:38,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:26:38,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272590173] [2024-11-13 14:26:38,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272590173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:38,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:38,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:26:38,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044268951] [2024-11-13 14:26:38,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:38,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:26:38,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:26:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:26:38,181 INFO L87 Difference]: Start difference. First operand 129 states and 136 transitions. Second operand has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:38,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:38,689 INFO L93 Difference]: Finished difference Result 142 states and 145 transitions. [2024-11-13 14:26:38,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:26:38,690 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 14:26:38,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:38,691 INFO L225 Difference]: With dead ends: 142 [2024-11-13 14:26:38,691 INFO L226 Difference]: Without dead ends: 140 [2024-11-13 14:26:38,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:26:38,693 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 83 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:38,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 458 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:26:38,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-13 14:26:38,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 129. [2024-11-13 14:26:38,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6025641025641026) internal successors, (125), 122 states have internal predecessors, (125), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 14:26:38,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 134 transitions. [2024-11-13 14:26:38,707 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 134 transitions. Word has length 20 [2024-11-13 14:26:38,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:38,711 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 134 transitions. [2024-11-13 14:26:38,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:38,711 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 134 transitions. [2024-11-13 14:26:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 14:26:38,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:38,712 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:38,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:26:38,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:38,913 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_26_to_34_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:38,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:38,914 INFO L85 PathProgramCache]: Analyzing trace with hash -498927483, now seen corresponding path program 1 times [2024-11-13 14:26:38,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:38,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184256926] [2024-11-13 14:26:38,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:38,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:39,227 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 14:26:39,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:39,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184256926] [2024-11-13 14:26:39,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184256926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:39,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:39,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:26:39,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671076525] [2024-11-13 14:26:39,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:39,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:26:39,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:39,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:26:39,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:26:39,230 INFO L87 Difference]: Start difference. First operand 129 states and 134 transitions. Second operand has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:39,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:39,909 INFO L93 Difference]: Finished difference Result 172 states and 175 transitions. [2024-11-13 14:26:39,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:26:39,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-13 14:26:39,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:39,910 INFO L225 Difference]: With dead ends: 172 [2024-11-13 14:26:39,911 INFO L226 Difference]: Without dead ends: 171 [2024-11-13 14:26:39,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:26:39,912 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 81 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:39,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 450 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:26:39,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-13 14:26:39,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 129. [2024-11-13 14:26:39,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.5897435897435896) internal successors, (124), 122 states have internal predecessors, (124), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 14:26:39,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2024-11-13 14:26:39,926 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 22 [2024-11-13 14:26:39,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:39,930 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2024-11-13 14:26:39,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:39,930 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2024-11-13 14:26:39,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 14:26:39,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:39,931 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:39,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:26:39,931 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_26_to_34_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:39,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:39,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1713117326, now seen corresponding path program 1 times [2024-11-13 14:26:39,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:39,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598934042] [2024-11-13 14:26:39,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:39,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:40,191 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 14:26:40,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:40,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598934042] [2024-11-13 14:26:40,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598934042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:40,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:40,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:26:40,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883988063] [2024-11-13 14:26:40,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:40,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:26:40,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:40,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:26:40,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:26:40,197 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:40,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:40,620 INFO L93 Difference]: Finished difference Result 171 states and 174 transitions. [2024-11-13 14:26:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:26:40,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-13 14:26:40,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:40,622 INFO L225 Difference]: With dead ends: 171 [2024-11-13 14:26:40,622 INFO L226 Difference]: Without dead ends: 170 [2024-11-13 14:26:40,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:26:40,623 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 78 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:40,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 398 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:26:40,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-13 14:26:40,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 129. [2024-11-13 14:26:40,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.5769230769230769) internal successors, (123), 122 states have internal predecessors, (123), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 14:26:40,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2024-11-13 14:26:40,634 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 23 [2024-11-13 14:26:40,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:40,634 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2024-11-13 14:26:40,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:40,635 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2024-11-13 14:26:40,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 14:26:40,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:40,641 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:40,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:26:40,642 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_26_to_34_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:40,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:40,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1343546903, now seen corresponding path program 1 times [2024-11-13 14:26:40,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:40,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866177642] [2024-11-13 14:26:40,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:40,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:40,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:26:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:40,939 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 14:26:40,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:40,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866177642] [2024-11-13 14:26:40,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866177642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:40,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:40,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:26:40,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253579935] [2024-11-13 14:26:40,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:40,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:26:40,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:40,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:26:40,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:26:40,943 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:41,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:41,075 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2024-11-13 14:26:41,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:26:41,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-11-13 14:26:41,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:41,077 INFO L225 Difference]: With dead ends: 170 [2024-11-13 14:26:41,078 INFO L226 Difference]: Without dead ends: 169 [2024-11-13 14:26:41,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:26:41,079 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 68 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:41,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 572 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:26:41,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-13 14:26:41,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 130. [2024-11-13 14:26:41,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 79 states have (on average 1.5696202531645569) internal successors, (124), 123 states have internal predecessors, (124), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 14:26:41,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2024-11-13 14:26:41,089 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 31 [2024-11-13 14:26:41,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:41,089 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2024-11-13 14:26:41,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:41,090 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2024-11-13 14:26:41,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 14:26:41,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:41,091 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:41,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:26:41,091 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_26_to_34_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:41,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:41,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1299718842, now seen corresponding path program 1 times [2024-11-13 14:26:41,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:41,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383464601] [2024-11-13 14:26:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:41,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:41,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:26:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:41,348 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 14:26:41,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:41,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383464601] [2024-11-13 14:26:41,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383464601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:41,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:41,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:26:41,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019464470] [2024-11-13 14:26:41,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:41,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:26:41,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:41,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:26:41,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:26:41,350 INFO L87 Difference]: Start difference. First operand 130 states and 133 transitions. Second operand has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:41,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:41,473 INFO L93 Difference]: Finished difference Result 169 states and 171 transitions. [2024-11-13 14:26:41,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:26:41,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2024-11-13 14:26:41,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:41,475 INFO L225 Difference]: With dead ends: 169 [2024-11-13 14:26:41,475 INFO L226 Difference]: Without dead ends: 168 [2024-11-13 14:26:41,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:26:41,477 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 65 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:41,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 575 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:26:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-13 14:26:41,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 131. [2024-11-13 14:26:41,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 80 states have (on average 1.5625) internal successors, (125), 124 states have internal predecessors, (125), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 14:26:41,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 134 transitions. [2024-11-13 14:26:41,486 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 134 transitions. Word has length 32 [2024-11-13 14:26:41,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:41,487 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 134 transitions. [2024-11-13 14:26:41,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:41,487 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 134 transitions. [2024-11-13 14:26:41,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 14:26:41,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:41,488 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:41,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:26:41,489 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_26_to_34_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:41,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:41,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1636578311, now seen corresponding path program 1 times [2024-11-13 14:26:41,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:41,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457399067] [2024-11-13 14:26:41,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:41,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:41,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:26:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:41,725 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 14:26:41,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:41,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457399067] [2024-11-13 14:26:41,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457399067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:41,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:41,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:26:41,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754432226] [2024-11-13 14:26:41,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:41,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:26:41,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:41,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:26:41,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:26:41,728 INFO L87 Difference]: Start difference. First operand 131 states and 134 transitions. Second operand has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:41,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:41,893 INFO L93 Difference]: Finished difference Result 168 states and 171 transitions. [2024-11-13 14:26:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:26:41,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2024-11-13 14:26:41,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:41,895 INFO L225 Difference]: With dead ends: 168 [2024-11-13 14:26:41,896 INFO L226 Difference]: Without dead ends: 166 [2024-11-13 14:26:41,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:26:41,897 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 64 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:41,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 429 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:26:41,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-13 14:26:41,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 133. [2024-11-13 14:26:41,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 82 states have (on average 1.548780487804878) internal successors, (127), 126 states have internal predecessors, (127), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 14:26:41,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2024-11-13 14:26:41,907 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 33 [2024-11-13 14:26:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:41,907 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 136 transitions. [2024-11-13 14:26:41,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:41,907 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 136 transitions. [2024-11-13 14:26:41,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 14:26:41,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:41,908 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:41,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 14:26:41,908 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:41,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:41,909 INFO L85 PathProgramCache]: Analyzing trace with hash 805349363, now seen corresponding path program 1 times [2024-11-13 14:26:41,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:41,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755629834] [2024-11-13 14:26:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:41,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:42,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:26:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:42,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:26:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:42,151 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 14:26:42,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:42,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755629834] [2024-11-13 14:26:42,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755629834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:42,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:42,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:26:42,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225394829] [2024-11-13 14:26:42,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:42,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:26:42,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:42,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:26:42,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:26:42,155 INFO L87 Difference]: Start difference. First operand 133 states and 136 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:26:42,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:42,522 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2024-11-13 14:26:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:26:42,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2024-11-13 14:26:42,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:42,527 INFO L225 Difference]: With dead ends: 166 [2024-11-13 14:26:42,528 INFO L226 Difference]: Without dead ends: 164 [2024-11-13 14:26:42,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:26:42,530 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 112 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:42,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 248 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:26:42,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-13 14:26:42,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 138. [2024-11-13 14:26:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 86 states have (on average 1.5232558139534884) internal successors, (131), 129 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 14:26:42,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 141 transitions. [2024-11-13 14:26:42,542 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 141 transitions. Word has length 34 [2024-11-13 14:26:42,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:42,543 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 141 transitions. [2024-11-13 14:26:42,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:26:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 141 transitions. [2024-11-13 14:26:42,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 14:26:42,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:42,545 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:42,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 14:26:42,547 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_26_to_34_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:42,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:42,547 INFO L85 PathProgramCache]: Analyzing trace with hash -793722405, now seen corresponding path program 1 times [2024-11-13 14:26:42,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:42,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343154090] [2024-11-13 14:26:42,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:42,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:26:42,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1415094114] [2024-11-13 14:26:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:42,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:42,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:42,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:42,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:26:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:42,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 14:26:42,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:42,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:26:42,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:26:42,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 14:26:42,960 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 14:26:42,960 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:26:42,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:42,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343154090] [2024-11-13 14:26:42,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:26:42,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415094114] [2024-11-13 14:26:42,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415094114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:42,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:42,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:26:42,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7457149] [2024-11-13 14:26:42,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:42,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:26:42,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:42,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:26:42,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:26:42,962 INFO L87 Difference]: Start difference. First operand 138 states and 141 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:43,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:43,172 INFO L93 Difference]: Finished difference Result 168 states and 172 transitions. [2024-11-13 14:26:43,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:26:43,173 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2024-11-13 14:26:43,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:43,174 INFO L225 Difference]: With dead ends: 168 [2024-11-13 14:26:43,174 INFO L226 Difference]: Without dead ends: 166 [2024-11-13 14:26:43,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:26:43,176 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 220 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:43,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 329 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:26:43,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-13 14:26:43,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 136. [2024-11-13 14:26:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 86 states have (on average 1.5) internal successors, (129), 127 states have internal predecessors, (129), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 14:26:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 139 transitions. [2024-11-13 14:26:43,186 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 139 transitions. Word has length 35 [2024-11-13 14:26:43,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:43,186 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 139 transitions. [2024-11-13 14:26:43,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:43,187 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 139 transitions. [2024-11-13 14:26:43,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 14:26:43,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:43,188 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:43,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:26:43,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 14:26:43,389 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:43,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:43,389 INFO L85 PathProgramCache]: Analyzing trace with hash 846625781, now seen corresponding path program 1 times [2024-11-13 14:26:43,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:43,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555313927] [2024-11-13 14:26:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:43,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:43,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:26:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:43,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:26:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:43,584 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 14:26:43,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:43,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555313927] [2024-11-13 14:26:43,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555313927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:43,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:43,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:26:43,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666512465] [2024-11-13 14:26:43,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:43,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:26:43,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:43,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:26:43,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:26:43,586 INFO L87 Difference]: Start difference. First operand 136 states and 139 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:26:43,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:43,874 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2024-11-13 14:26:43,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:26:43,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2024-11-13 14:26:43,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:43,876 INFO L225 Difference]: With dead ends: 166 [2024-11-13 14:26:43,876 INFO L226 Difference]: Without dead ends: 160 [2024-11-13 14:26:43,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:26:43,878 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 92 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:43,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 255 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:26:43,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-13 14:26:43,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 142. [2024-11-13 14:26:43,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 92 states have (on average 1.4673913043478262) internal successors, (135), 133 states have internal predecessors, (135), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 14:26:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 145 transitions. [2024-11-13 14:26:43,890 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 145 transitions. Word has length 36 [2024-11-13 14:26:43,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:43,890 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 145 transitions. [2024-11-13 14:26:43,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:26:43,891 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 145 transitions. [2024-11-13 14:26:43,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 14:26:43,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:43,892 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:43,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:26:43,892 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_26_to_34_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:43,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:43,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1164409354, now seen corresponding path program 1 times [2024-11-13 14:26:43,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:43,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273241391] [2024-11-13 14:26:43,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:43,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:26:43,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064024827] [2024-11-13 14:26:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:43,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:43,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:43,939 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:43,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:26:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:44,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 14:26:44,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:44,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:26:44,292 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 14:26:44,292 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:26:44,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:44,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273241391] [2024-11-13 14:26:44,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:26:44,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064024827] [2024-11-13 14:26:44,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064024827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:44,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:44,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:26:44,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264190609] [2024-11-13 14:26:44,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:44,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:26:44,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:44,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:26:44,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:26:44,294 INFO L87 Difference]: Start difference. First operand 142 states and 145 transitions. Second operand has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:44,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:44,507 INFO L93 Difference]: Finished difference Result 171 states and 174 transitions. [2024-11-13 14:26:44,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:26:44,507 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-11-13 14:26:44,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:44,509 INFO L225 Difference]: With dead ends: 171 [2024-11-13 14:26:44,509 INFO L226 Difference]: Without dead ends: 170 [2024-11-13 14:26:44,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:26:44,510 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 85 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:44,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 330 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:26:44,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-13 14:26:44,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 148. [2024-11-13 14:26:44,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 97 states have (on average 1.443298969072165) internal successors, (140), 138 states have internal predecessors, (140), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 14:26:44,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2024-11-13 14:26:44,521 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 36 [2024-11-13 14:26:44,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:44,521 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2024-11-13 14:26:44,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:44,522 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2024-11-13 14:26:44,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 14:26:44,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:44,523 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:44,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:26:44,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 14:26:44,727 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_26_to_34_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:44,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:44,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1736951741, now seen corresponding path program 1 times [2024-11-13 14:26:44,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:44,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678593605] [2024-11-13 14:26:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:44,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:44,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:26:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:44,998 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 14:26:44,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:44,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678593605] [2024-11-13 14:26:44,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678593605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:44,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:44,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:26:44,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703876365] [2024-11-13 14:26:44,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:45,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:26:45,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:45,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:26:45,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:26:45,002 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:45,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:45,134 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2024-11-13 14:26:45,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:26:45,134 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2024-11-13 14:26:45,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:45,135 INFO L225 Difference]: With dead ends: 152 [2024-11-13 14:26:45,136 INFO L226 Difference]: Without dead ends: 151 [2024-11-13 14:26:45,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:26:45,137 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 40 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:45,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 487 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:26:45,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-13 14:26:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2024-11-13 14:26:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 98 states have (on average 1.4387755102040816) internal successors, (141), 139 states have internal predecessors, (141), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 14:26:45,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2024-11-13 14:26:45,147 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 37 [2024-11-13 14:26:45,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:45,147 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2024-11-13 14:26:45,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:45,147 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2024-11-13 14:26:45,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 14:26:45,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:45,148 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:45,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 14:26:45,148 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_26_to_34_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:45,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:45,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1989070740, now seen corresponding path program 1 times [2024-11-13 14:26:45,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:45,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52888807] [2024-11-13 14:26:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:45,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:45,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:26:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:45,344 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 14:26:45,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:45,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52888807] [2024-11-13 14:26:45,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52888807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:45,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:45,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:26:45,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166876179] [2024-11-13 14:26:45,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:45,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:26:45,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:26:45,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:26:45,347 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:45,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:45,586 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2024-11-13 14:26:45,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:26:45,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2024-11-13 14:26:45,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:45,588 INFO L225 Difference]: With dead ends: 151 [2024-11-13 14:26:45,588 INFO L226 Difference]: Without dead ends: 150 [2024-11-13 14:26:45,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:26:45,589 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 35 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:45,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 466 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:26:45,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-13 14:26:45,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-13 14:26:45,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 99 states have (on average 1.4343434343434343) internal successors, (142), 140 states have internal predecessors, (142), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 14:26:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2024-11-13 14:26:45,605 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 38 [2024-11-13 14:26:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:45,606 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2024-11-13 14:26:45,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2024-11-13 14:26:45,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 14:26:45,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:45,610 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:45,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 14:26:45,610 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:45,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:45,611 INFO L85 PathProgramCache]: Analyzing trace with hash 328560985, now seen corresponding path program 1 times [2024-11-13 14:26:45,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:45,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187050304] [2024-11-13 14:26:45,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:45,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:26:45,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758107426] [2024-11-13 14:26:45,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:45,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:45,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:45,654 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:45,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:26:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:45,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-13 14:26:45,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:45,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:26:45,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:26:46,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:26:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:46,243 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:26:46,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:46,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:46,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187050304] [2024-11-13 14:26:46,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:26:46,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758107426] [2024-11-13 14:26:46,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758107426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:26:46,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:26:46,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2024-11-13 14:26:46,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991598165] [2024-11-13 14:26:46,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:26:46,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 14:26:46,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:46,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:26:46,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-13 14:26:46,773 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand has 21 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:26:49,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:49,015 INFO L93 Difference]: Finished difference Result 230 states and 237 transitions. [2024-11-13 14:26:49,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 14:26:49,017 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-13 14:26:49,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:49,019 INFO L225 Difference]: With dead ends: 230 [2024-11-13 14:26:49,019 INFO L226 Difference]: Without dead ends: 227 [2024-11-13 14:26:49,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=238, Invalid=952, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 14:26:49,022 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 538 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:49,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 827 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 14:26:49,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-13 14:26:49,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 178. [2024-11-13 14:26:49,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 124 states have (on average 1.467741935483871) internal successors, (182), 164 states have internal predecessors, (182), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 14:26:49,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 200 transitions. [2024-11-13 14:26:49,039 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 200 transitions. Word has length 42 [2024-11-13 14:26:49,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:49,040 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 200 transitions. [2024-11-13 14:26:49,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:26:49,040 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 200 transitions. [2024-11-13 14:26:49,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 14:26:49,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:49,041 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:49,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:26:49,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 14:26:49,242 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:49,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:49,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1963841541, now seen corresponding path program 1 times [2024-11-13 14:26:49,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:49,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052530494] [2024-11-13 14:26:49,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:49,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:49,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:26:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:49,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:26:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:49,777 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 14:26:49,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:49,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052530494] [2024-11-13 14:26:49,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052530494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:49,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:49,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:26:49,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441391039] [2024-11-13 14:26:49,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:49,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:26:49,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:49,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:26:49,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:26:49,782 INFO L87 Difference]: Start difference. First operand 178 states and 200 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:26:50,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:50,503 INFO L93 Difference]: Finished difference Result 193 states and 219 transitions. [2024-11-13 14:26:50,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:26:50,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-13 14:26:50,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:50,505 INFO L225 Difference]: With dead ends: 193 [2024-11-13 14:26:50,505 INFO L226 Difference]: Without dead ends: 192 [2024-11-13 14:26:50,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:26:50,506 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 106 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:50,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 236 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:26:50,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-13 14:26:50,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 179. [2024-11-13 14:26:50,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 125 states have (on average 1.464) internal successors, (183), 165 states have internal predecessors, (183), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 14:26:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 201 transitions. [2024-11-13 14:26:50,523 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 201 transitions. Word has length 42 [2024-11-13 14:26:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:50,524 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 201 transitions. [2024-11-13 14:26:50,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:26:50,524 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 201 transitions. [2024-11-13 14:26:50,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 14:26:50,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:50,525 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:50,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 14:26:50,527 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:50,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:50,527 INFO L85 PathProgramCache]: Analyzing trace with hash -749545573, now seen corresponding path program 1 times [2024-11-13 14:26:50,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:50,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567812475] [2024-11-13 14:26:50,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:50,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:26:50,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26486579] [2024-11-13 14:26:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:50,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:50,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:50,557 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:50,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:26:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:50,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 14:26:50,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:50,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:26:50,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:26:50,882 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 14:26:50,883 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:26:50,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:50,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567812475] [2024-11-13 14:26:50,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:26:50,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26486579] [2024-11-13 14:26:50,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26486579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:50,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:50,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:26:50,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076910964] [2024-11-13 14:26:50,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:50,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:26:50,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:50,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:26:50,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:26:50,885 INFO L87 Difference]: Start difference. First operand 179 states and 201 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:26:51,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:51,142 INFO L93 Difference]: Finished difference Result 193 states and 218 transitions. [2024-11-13 14:26:51,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:26:51,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2024-11-13 14:26:51,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:51,144 INFO L225 Difference]: With dead ends: 193 [2024-11-13 14:26:51,144 INFO L226 Difference]: Without dead ends: 192 [2024-11-13 14:26:51,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:26:51,145 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 53 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:51,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 287 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:26:51,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-13 14:26:51,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 180. [2024-11-13 14:26:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 126 states have (on average 1.4603174603174602) internal successors, (184), 166 states have internal predecessors, (184), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 14:26:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 202 transitions. [2024-11-13 14:26:51,157 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 202 transitions. Word has length 43 [2024-11-13 14:26:51,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:51,158 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 202 transitions. [2024-11-13 14:26:51,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:26:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 202 transitions. [2024-11-13 14:26:51,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 14:26:51,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:51,159 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:51,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:26:51,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:51,363 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:51,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:51,364 INFO L85 PathProgramCache]: Analyzing trace with hash -2080470661, now seen corresponding path program 1 times [2024-11-13 14:26:51,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:51,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737758313] [2024-11-13 14:26:51,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:51,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:51,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:26:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:51,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:51,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737758313] [2024-11-13 14:26:51,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737758313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:26:51,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71628833] [2024-11-13 14:26:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:51,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:51,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:51,722 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:51,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:26:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:51,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:26:51,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:52,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 15 [2024-11-13 14:26:52,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 14:26:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:52,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:26:52,364 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:52,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71628833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:26:52,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:26:52,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2024-11-13 14:26:52,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392119962] [2024-11-13 14:26:52,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:26:52,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 14:26:52,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:52,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:26:52,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-13 14:26:52,368 INFO L87 Difference]: Start difference. First operand 180 states and 202 transitions. Second operand has 21 states, 19 states have (on average 5.842105263157895) internal successors, (111), 17 states have internal predecessors, (111), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:26:53,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:53,113 INFO L93 Difference]: Finished difference Result 192 states and 214 transitions. [2024-11-13 14:26:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:26:53,113 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.842105263157895) internal successors, (111), 17 states have internal predecessors, (111), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 44 [2024-11-13 14:26:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:53,115 INFO L225 Difference]: With dead ends: 192 [2024-11-13 14:26:53,115 INFO L226 Difference]: Without dead ends: 191 [2024-11-13 14:26:53,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2024-11-13 14:26:53,117 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 450 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:53,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 714 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:26:53,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-13 14:26:53,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 179. [2024-11-13 14:26:53,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 126 states have (on average 1.4444444444444444) internal successors, (182), 165 states have internal predecessors, (182), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 14:26:53,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 200 transitions. [2024-11-13 14:26:53,132 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 200 transitions. Word has length 44 [2024-11-13 14:26:53,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:53,133 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 200 transitions. [2024-11-13 14:26:53,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.842105263157895) internal successors, (111), 17 states have internal predecessors, (111), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:26:53,134 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 200 transitions. [2024-11-13 14:26:53,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 14:26:53,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:53,134 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:53,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:26:53,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-13 14:26:53,338 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:53,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:53,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1761076227, now seen corresponding path program 1 times [2024-11-13 14:26:53,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:53,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244581101] [2024-11-13 14:26:53,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:53,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:53,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:26:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:53,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:26:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:53,513 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 14:26:53,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:53,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244581101] [2024-11-13 14:26:53,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244581101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:53,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:53,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:26:53,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514249648] [2024-11-13 14:26:53,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:53,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:26:53,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:53,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:26:53,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:26:53,515 INFO L87 Difference]: Start difference. First operand 179 states and 200 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:26:53,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:53,892 INFO L93 Difference]: Finished difference Result 193 states and 215 transitions. [2024-11-13 14:26:53,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:26:53,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-13 14:26:53,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:53,898 INFO L225 Difference]: With dead ends: 193 [2024-11-13 14:26:53,898 INFO L226 Difference]: Without dead ends: 192 [2024-11-13 14:26:53,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:26:53,900 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 67 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:53,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 287 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:26:53,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-13 14:26:53,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 180. [2024-11-13 14:26:53,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 127 states have (on average 1.4409448818897639) internal successors, (183), 166 states have internal predecessors, (183), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 14:26:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 201 transitions. [2024-11-13 14:26:53,919 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 201 transitions. Word has length 44 [2024-11-13 14:26:53,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:53,919 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 201 transitions. [2024-11-13 14:26:53,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:26:53,920 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 201 transitions. [2024-11-13 14:26:53,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 14:26:53,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:53,920 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:53,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 14:26:53,921 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_26_to_34_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:26:53,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:53,921 INFO L85 PathProgramCache]: Analyzing trace with hash -70080964, now seen corresponding path program 1 times [2024-11-13 14:26:53,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:53,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492399617] [2024-11-13 14:26:53,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:53,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:54,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:26:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:54,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:54,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492399617] [2024-11-13 14:26:54,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492399617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:26:54,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255891040] [2024-11-13 14:26:54,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:54,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:54,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:54,269 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:54,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:26:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:54,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:26:54,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:54,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:26:54,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:26:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:54,622 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:26:54,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255891040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:54,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:26:54,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2024-11-13 14:26:54,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409912351] [2024-11-13 14:26:54,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:54,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:26:54,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:54,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:26:54,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:26:54,624 INFO L87 Difference]: Start difference. First operand 180 states and 201 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:26:58,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:27:00,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:27:00,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:00,998 INFO L93 Difference]: Finished difference Result 180 states and 201 transitions. [2024-11-13 14:27:00,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 14:27:00,999 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-11-13 14:27:00,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:01,001 INFO L225 Difference]: With dead ends: 180 [2024-11-13 14:27:01,001 INFO L226 Difference]: Without dead ends: 178 [2024-11-13 14:27:01,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2024-11-13 14:27:01,003 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 162 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:01,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 377 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 291 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2024-11-13 14:27:01,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-13 14:27:01,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-11-13 14:27:01,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 127 states have (on average 1.4173228346456692) internal successors, (180), 164 states have internal predecessors, (180), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 14:27:01,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 198 transitions. [2024-11-13 14:27:01,015 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 198 transitions. Word has length 45 [2024-11-13 14:27:01,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:01,016 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 198 transitions. [2024-11-13 14:27:01,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:27:01,016 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 198 transitions. [2024-11-13 14:27:01,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 14:27:01,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:01,016 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:01,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:27:01,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 14:27:01,220 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:27:01,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:01,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1241211869, now seen corresponding path program 1 times [2024-11-13 14:27:01,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:01,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883017296] [2024-11-13 14:27:01,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:01,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:01,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:27:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:01,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:27:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:01,426 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 14:27:01,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:01,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883017296] [2024-11-13 14:27:01,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883017296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:01,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:01,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:27:01,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500815654] [2024-11-13 14:27:01,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:01,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:27:01,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:01,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:27:01,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:27:01,428 INFO L87 Difference]: Start difference. First operand 178 states and 198 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:27:01,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:01,631 INFO L93 Difference]: Finished difference Result 190 states and 211 transitions. [2024-11-13 14:27:01,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:27:01,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-13 14:27:01,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:01,633 INFO L225 Difference]: With dead ends: 190 [2024-11-13 14:27:01,634 INFO L226 Difference]: Without dead ends: 189 [2024-11-13 14:27:01,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:27:01,635 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 93 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:01,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 211 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:27:01,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-13 14:27:01,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2024-11-13 14:27:01,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 128 states have (on average 1.4140625) internal successors, (181), 165 states have internal predecessors, (181), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 14:27:01,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2024-11-13 14:27:01,648 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 45 [2024-11-13 14:27:01,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:01,648 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2024-11-13 14:27:01,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:27:01,649 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2024-11-13 14:27:01,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 14:27:01,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:01,649 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:01,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-13 14:27:01,650 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_26_to_34_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:27:01,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:01,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2122457501, now seen corresponding path program 1 times [2024-11-13 14:27:01,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:01,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148677] [2024-11-13 14:27:01,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:01,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:27:01,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987224822] [2024-11-13 14:27:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:01,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:01,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:01,685 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:01,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:27:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:01,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:27:01,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:01,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:27:02,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:27:02,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 14:27:02,105 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:02,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:02,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:02,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148677] [2024-11-13 14:27:02,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:27:02,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987224822] [2024-11-13 14:27:02,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987224822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:27:02,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:27:02,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-11-13 14:27:02,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136199537] [2024-11-13 14:27:02,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:02,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 14:27:02,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:02,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 14:27:02,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:27:02,495 INFO L87 Difference]: Start difference. First operand 179 states and 199 transitions. Second operand has 17 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:27:05,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-13 14:27:06,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-13 14:27:07,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:07,610 INFO L93 Difference]: Finished difference Result 187 states and 207 transitions. [2024-11-13 14:27:07,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 14:27:07,611 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2024-11-13 14:27:07,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:07,612 INFO L225 Difference]: With dead ends: 187 [2024-11-13 14:27:07,612 INFO L226 Difference]: Without dead ends: 186 [2024-11-13 14:27:07,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2024-11-13 14:27:07,613 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 375 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:07,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 545 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 413 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2024-11-13 14:27:07,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-13 14:27:07,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2024-11-13 14:27:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 128 states have (on average 1.3984375) internal successors, (179), 164 states have internal predecessors, (179), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 14:27:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 197 transitions. [2024-11-13 14:27:07,626 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 197 transitions. Word has length 46 [2024-11-13 14:27:07,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:07,626 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 197 transitions. [2024-11-13 14:27:07,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:27:07,626 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 197 transitions. [2024-11-13 14:27:07,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 14:27:07,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:07,630 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:07,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 14:27:07,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 14:27:07,831 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:27:07,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:07,832 INFO L85 PathProgramCache]: Analyzing trace with hash -177137665, now seen corresponding path program 1 times [2024-11-13 14:27:07,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:07,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656056944] [2024-11-13 14:27:07,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:07,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:27:07,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338268072] [2024-11-13 14:27:07,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:07,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:07,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:07,857 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:07,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:27:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:07,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 14:27:07,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:07,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:27:08,071 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 14:27:08,071 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:27:08,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:08,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656056944] [2024-11-13 14:27:08,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:27:08,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338268072] [2024-11-13 14:27:08,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338268072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:08,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:08,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:27:08,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460864701] [2024-11-13 14:27:08,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:08,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:27:08,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:27:08,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:27:08,074 INFO L87 Difference]: Start difference. First operand 178 states and 197 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:27:08,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:08,209 INFO L93 Difference]: Finished difference Result 188 states and 208 transitions. [2024-11-13 14:27:08,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:27:08,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2024-11-13 14:27:08,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:08,214 INFO L225 Difference]: With dead ends: 188 [2024-11-13 14:27:08,214 INFO L226 Difference]: Without dead ends: 186 [2024-11-13 14:27:08,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:27:08,215 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 36 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:08,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 233 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:27:08,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-13 14:27:08,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 180. [2024-11-13 14:27:08,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 130 states have (on average 1.3923076923076922) internal successors, (181), 166 states have internal predecessors, (181), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 14:27:08,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 199 transitions. [2024-11-13 14:27:08,226 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 199 transitions. Word has length 46 [2024-11-13 14:27:08,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:08,226 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 199 transitions. [2024-11-13 14:27:08,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:27:08,227 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 199 transitions. [2024-11-13 14:27:08,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 14:27:08,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:08,227 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:08,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 14:27:08,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:08,432 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_26_to_34_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:27:08,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:08,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1371673182, now seen corresponding path program 1 times [2024-11-13 14:27:08,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:08,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042355583] [2024-11-13 14:27:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:08,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:27:08,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908225468] [2024-11-13 14:27:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:08,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:08,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:08,462 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:08,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:27:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:08,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 14:27:08,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:08,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:27:08,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:27:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:08,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:13,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:13,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042355583] [2024-11-13 14:27:13,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:27:13,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908225468] [2024-11-13 14:27:13,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908225468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:27:13,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:27:13,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-13 14:27:13,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236462450] [2024-11-13 14:27:13,055 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:13,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:27:13,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:13,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:27:13,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2024-11-13 14:27:13,056 INFO L87 Difference]: Start difference. First operand 180 states and 199 transitions. Second operand has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:27:13,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:13,492 INFO L93 Difference]: Finished difference Result 207 states and 212 transitions. [2024-11-13 14:27:13,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:27:13,493 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2024-11-13 14:27:13,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:13,494 INFO L225 Difference]: With dead ends: 207 [2024-11-13 14:27:13,494 INFO L226 Difference]: Without dead ends: 206 [2024-11-13 14:27:13,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=99, Invalid=362, Unknown=1, NotChecked=0, Total=462 [2024-11-13 14:27:13,495 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 185 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:13,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 474 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:27:13,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-13 14:27:13,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 180. [2024-11-13 14:27:13,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 130 states have (on average 1.3846153846153846) internal successors, (180), 166 states have internal predecessors, (180), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 14:27:13,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-11-13 14:27:13,508 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 47 [2024-11-13 14:27:13,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:13,509 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-11-13 14:27:13,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:27:13,509 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-11-13 14:27:13,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 14:27:13,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:13,510 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:13,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 14:27:13,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 14:27:13,714 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_26_to_34_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:27:13,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash -427804225, now seen corresponding path program 1 times [2024-11-13 14:27:13,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:13,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790645150] [2024-11-13 14:27:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:13,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:27:13,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [818840079] [2024-11-13 14:27:13,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:13,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:13,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:13,743 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:13,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 14:27:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:13,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 14:27:13,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:13,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:27:13,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:27:14,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-13 14:27:14,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:14,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:31,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:31,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:31,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790645150] [2024-11-13 14:27:31,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:27:31,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818840079] [2024-11-13 14:27:31,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818840079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:27:31,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:27:31,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2024-11-13 14:27:31,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879190195] [2024-11-13 14:27:31,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:31,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 14:27:31,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:31,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 14:27:31,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=305, Unknown=4, NotChecked=0, Total=380 [2024-11-13 14:27:31,233 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 20 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:27:35,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:35,473 INFO L93 Difference]: Finished difference Result 184 states and 202 transitions. [2024-11-13 14:27:35,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 14:27:35,473 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2024-11-13 14:27:35,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:35,474 INFO L225 Difference]: With dead ends: 184 [2024-11-13 14:27:35,475 INFO L226 Difference]: Without dead ends: 183 [2024-11-13 14:27:35,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=224, Invalid=702, Unknown=4, NotChecked=0, Total=930 [2024-11-13 14:27:35,475 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 285 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:35,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 743 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-13 14:27:35,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-13 14:27:35,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2024-11-13 14:27:35,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 130 states have (on average 1.3692307692307693) internal successors, (178), 165 states have internal predecessors, (178), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 14:27:35,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 196 transitions. [2024-11-13 14:27:35,487 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 196 transitions. Word has length 48 [2024-11-13 14:27:35,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:35,488 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 196 transitions. [2024-11-13 14:27:35,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:27:35,488 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 196 transitions. [2024-11-13 14:27:35,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 14:27:35,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:35,488 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:35,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 14:27:35,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:35,689 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:27:35,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:35,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1569397761, now seen corresponding path program 1 times [2024-11-13 14:27:35,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:35,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541301704] [2024-11-13 14:27:35,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:35,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:27:35,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628980884] [2024-11-13 14:27:35,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:35,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:35,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:35,712 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:35,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 14:27:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:35,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 14:27:35,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:35,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:27:35,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:27:36,122 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 14:27:36,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:27:36,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:36,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541301704] [2024-11-13 14:27:36,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:27:36,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628980884] [2024-11-13 14:27:36,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628980884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:36,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:36,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:27:36,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279390486] [2024-11-13 14:27:36,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:36,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:27:36,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:36,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:27:36,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:27:36,125 INFO L87 Difference]: Start difference. First operand 179 states and 196 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:27:36,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:36,384 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2024-11-13 14:27:36,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:27:36,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2024-11-13 14:27:36,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:36,385 INFO L225 Difference]: With dead ends: 185 [2024-11-13 14:27:36,386 INFO L226 Difference]: Without dead ends: 183 [2024-11-13 14:27:36,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:27:36,386 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 33 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:36,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 264 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:27:36,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-13 14:27:36,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2024-11-13 14:27:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 132 states have (on average 1.3636363636363635) internal successors, (180), 167 states have internal predecessors, (180), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 14:27:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 198 transitions. [2024-11-13 14:27:36,398 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 198 transitions. Word has length 48 [2024-11-13 14:27:36,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:36,399 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 198 transitions. [2024-11-13 14:27:36,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:27:36,399 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 198 transitions. [2024-11-13 14:27:36,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 14:27:36,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:36,400 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:36,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 14:27:36,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 14:27:36,604 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_26_to_34_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:27:36,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:36,605 INFO L85 PathProgramCache]: Analyzing trace with hash -377028992, now seen corresponding path program 1 times [2024-11-13 14:27:36,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:36,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397847674] [2024-11-13 14:27:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:36,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:27:36,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1824996145] [2024-11-13 14:27:36,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:36,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:36,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:36,627 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:36,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 14:27:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:36,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 14:27:36,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:36,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:27:36,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:27:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:37,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:42,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:42,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397847674] [2024-11-13 14:27:42,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:27:42,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824996145] [2024-11-13 14:27:42,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824996145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:27:42,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:27:42,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-13 14:27:42,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37584937] [2024-11-13 14:27:42,999 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:42,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:27:42,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:43,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:27:43,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=278, Unknown=1, NotChecked=0, Total=342 [2024-11-13 14:27:43,000 INFO L87 Difference]: Start difference. First operand 181 states and 198 transitions. Second operand has 12 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:27:43,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:43,773 INFO L93 Difference]: Finished difference Result 202 states and 207 transitions. [2024-11-13 14:27:43,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:27:43,774 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-13 14:27:43,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:43,775 INFO L225 Difference]: With dead ends: 202 [2024-11-13 14:27:43,776 INFO L226 Difference]: Without dead ends: 201 [2024-11-13 14:27:43,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=130, Invalid=469, Unknown=1, NotChecked=0, Total=600 [2024-11-13 14:27:43,777 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 171 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:43,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 481 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:27:43,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-13 14:27:43,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 181. [2024-11-13 14:27:43,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 132 states have (on average 1.356060606060606) internal successors, (179), 167 states have internal predecessors, (179), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 14:27:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 197 transitions. [2024-11-13 14:27:43,790 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 197 transitions. Word has length 49 [2024-11-13 14:27:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:43,791 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 197 transitions. [2024-11-13 14:27:43,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:27:43,791 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 197 transitions. [2024-11-13 14:27:43,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 14:27:43,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:43,792 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:43,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-13 14:27:43,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:43,996 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:27:43,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:43,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1197003233, now seen corresponding path program 1 times [2024-11-13 14:27:43,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:43,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652712929] [2024-11-13 14:27:43,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:43,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:27:44,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056846636] [2024-11-13 14:27:44,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:44,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:44,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:44,033 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:44,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 14:27:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:44,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-13 14:27:44,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:44,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:27:44,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:27:44,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:27:44,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:27:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:44,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:46,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:46,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652712929] [2024-11-13 14:27:46,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:27:46,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056846636] [2024-11-13 14:27:46,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056846636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:27:46,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:27:46,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2024-11-13 14:27:46,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707339665] [2024-11-13 14:27:46,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:46,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 14:27:46,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:46,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 14:27:46,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2024-11-13 14:27:46,288 INFO L87 Difference]: Start difference. First operand 181 states and 197 transitions. Second operand has 27 states, 24 states have (on average 3.7916666666666665) internal successors, (91), 23 states have internal predecessors, (91), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:27:52,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:52,541 INFO L93 Difference]: Finished difference Result 251 states and 262 transitions. [2024-11-13 14:27:52,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 14:27:52,542 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 3.7916666666666665) internal successors, (91), 23 states have internal predecessors, (91), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-13 14:27:52,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:52,543 INFO L225 Difference]: With dead ends: 251 [2024-11-13 14:27:52,543 INFO L226 Difference]: Without dead ends: 249 [2024-11-13 14:27:52,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=323, Invalid=1747, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 14:27:52,545 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 521 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:52,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1047 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-13 14:27:52,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-13 14:27:52,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 217. [2024-11-13 14:27:52,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 164 states have (on average 1.3780487804878048) internal successors, (226), 200 states have internal predecessors, (226), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-13 14:27:52,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 250 transitions. [2024-11-13 14:27:52,569 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 250 transitions. Word has length 50 [2024-11-13 14:27:52,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:52,570 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 250 transitions. [2024-11-13 14:27:52,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 3.7916666666666665) internal successors, (91), 23 states have internal predecessors, (91), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:27:52,570 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 250 transitions. [2024-11-13 14:27:52,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 14:27:52,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:52,574 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:52,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 14:27:52,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:52,775 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:27:52,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:52,776 INFO L85 PathProgramCache]: Analyzing trace with hash 657729539, now seen corresponding path program 1 times [2024-11-13 14:27:52,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:52,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549129826] [2024-11-13 14:27:52,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:52,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:53,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:27:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:53,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:27:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:53,057 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 14:27:53,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:53,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549129826] [2024-11-13 14:27:53,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549129826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:53,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:53,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:27:53,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064781702] [2024-11-13 14:27:53,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:53,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:27:53,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:53,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:27:53,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:27:53,060 INFO L87 Difference]: Start difference. First operand 217 states and 250 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:27:53,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:53,738 INFO L93 Difference]: Finished difference Result 220 states and 253 transitions. [2024-11-13 14:27:53,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:27:53,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-13 14:27:53,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:53,741 INFO L225 Difference]: With dead ends: 220 [2024-11-13 14:27:53,741 INFO L226 Difference]: Without dead ends: 219 [2024-11-13 14:27:53,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:27:53,742 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 46 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:53,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 286 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:27:53,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-13 14:27:53,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218. [2024-11-13 14:27:53,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 165 states have (on average 1.3757575757575757) internal successors, (227), 201 states have internal predecessors, (227), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-13 14:27:53,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 251 transitions. [2024-11-13 14:27:53,769 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 251 transitions. Word has length 50 [2024-11-13 14:27:53,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:53,770 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 251 transitions. [2024-11-13 14:27:53,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:27:53,770 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 251 transitions. [2024-11-13 14:27:53,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 14:27:53,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:53,771 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:53,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-13 14:27:53,771 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:27:53,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:53,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1085220701, now seen corresponding path program 1 times [2024-11-13 14:27:53,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:53,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544865216] [2024-11-13 14:27:53,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:53,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:53,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:27:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:54,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:27:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:54,036 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 14:27:54,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:54,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544865216] [2024-11-13 14:27:54,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544865216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:54,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:54,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:27:54,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428841839] [2024-11-13 14:27:54,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:54,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:27:54,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:54,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:27:54,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:27:54,040 INFO L87 Difference]: Start difference. First operand 218 states and 251 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:27:54,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:54,405 INFO L93 Difference]: Finished difference Result 220 states and 252 transitions. [2024-11-13 14:27:54,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:27:54,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2024-11-13 14:27:54,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:54,407 INFO L225 Difference]: With dead ends: 220 [2024-11-13 14:27:54,407 INFO L226 Difference]: Without dead ends: 198 [2024-11-13 14:27:54,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:27:54,409 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 65 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:54,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 262 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:27:54,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-13 14:27:54,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2024-11-13 14:27:54,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 146 states have (on average 1.417808219178082) internal successors, (207), 182 states have internal predecessors, (207), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-13 14:27:54,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 230 transitions. [2024-11-13 14:27:54,428 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 230 transitions. Word has length 51 [2024-11-13 14:27:54,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:54,428 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 230 transitions. [2024-11-13 14:27:54,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:27:54,428 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 230 transitions. [2024-11-13 14:27:54,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 14:27:54,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:54,429 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:54,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-13 14:27:54,429 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_26_to_34_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:27:54,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:54,429 INFO L85 PathProgramCache]: Analyzing trace with hash -731125245, now seen corresponding path program 1 times [2024-11-13 14:27:54,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:54,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256153410] [2024-11-13 14:27:54,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:54,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:54,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:27:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:54,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:54,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256153410] [2024-11-13 14:27:54,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256153410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:27:54,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885618789] [2024-11-13 14:27:54,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:54,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:54,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:54,895 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:54,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 14:27:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:55,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:27:55,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:55,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 15 [2024-11-13 14:27:55,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 14:27:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:55,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:55,710 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:55,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885618789] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:27:55,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:27:55,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2024-11-13 14:27:55,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887952881] [2024-11-13 14:27:55,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:55,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 14:27:55,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:55,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 14:27:55,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:27:55,713 INFO L87 Difference]: Start difference. First operand 198 states and 230 transitions. Second operand has 22 states, 20 states have (on average 6.35) internal successors, (127), 18 states have internal predecessors, (127), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:27:56,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:56,570 INFO L93 Difference]: Finished difference Result 198 states and 230 transitions. [2024-11-13 14:27:56,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:27:56,571 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 6.35) internal successors, (127), 18 states have internal predecessors, (127), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2024-11-13 14:27:56,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:56,572 INFO L225 Difference]: With dead ends: 198 [2024-11-13 14:27:56,572 INFO L226 Difference]: Without dead ends: 197 [2024-11-13 14:27:56,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=674, Unknown=0, NotChecked=0, Total=870 [2024-11-13 14:27:56,573 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 275 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:56,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 760 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:27:56,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-13 14:27:56,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-13 14:27:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 146 states have (on average 1.3972602739726028) internal successors, (204), 181 states have internal predecessors, (204), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-13 14:27:56,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 227 transitions. [2024-11-13 14:27:56,592 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 227 transitions. Word has length 52 [2024-11-13 14:27:56,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:56,592 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 227 transitions. [2024-11-13 14:27:56,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 6.35) internal successors, (127), 18 states have internal predecessors, (127), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:27:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 227 transitions. [2024-11-13 14:27:56,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 14:27:56,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:56,593 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:56,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-13 14:27:56,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:56,798 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_26_to_34_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:27:56,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:56,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1190046012, now seen corresponding path program 1 times [2024-11-13 14:27:56,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:56,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92130165] [2024-11-13 14:27:56,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:56,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:57,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:27:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:57,245 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:57,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:57,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92130165] [2024-11-13 14:27:57,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92130165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:27:57,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979096411] [2024-11-13 14:27:57,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:57,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:57,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:57,248 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:57,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 14:27:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:57,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 14:27:57,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:57,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:27:57,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:27:57,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:27:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:57,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:57,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979096411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:27:57,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:27:57,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2024-11-13 14:27:57,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081672755] [2024-11-13 14:27:57,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:57,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 14:27:57,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:57,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 14:27:57,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:27:57,949 INFO L87 Difference]: Start difference. First operand 197 states and 227 transitions. Second operand has 22 states, 18 states have (on average 7.388888888888889) internal successors, (133), 17 states have internal predecessors, (133), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:27:58,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:58,729 INFO L93 Difference]: Finished difference Result 224 states and 233 transitions. [2024-11-13 14:27:58,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 14:27:58,729 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.388888888888889) internal successors, (133), 17 states have internal predecessors, (133), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 53 [2024-11-13 14:27:58,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:58,730 INFO L225 Difference]: With dead ends: 224 [2024-11-13 14:27:58,730 INFO L226 Difference]: Without dead ends: 223 [2024-11-13 14:27:58,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=213, Invalid=779, Unknown=0, NotChecked=0, Total=992 [2024-11-13 14:27:58,731 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 253 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:58,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 866 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:27:58,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-13 14:27:58,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 197. [2024-11-13 14:27:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 146 states have (on average 1.3835616438356164) internal successors, (202), 181 states have internal predecessors, (202), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-13 14:27:58,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 225 transitions. [2024-11-13 14:27:58,752 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 225 transitions. Word has length 53 [2024-11-13 14:27:58,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:58,753 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 225 transitions. [2024-11-13 14:27:58,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.388888888888889) internal successors, (133), 17 states have internal predecessors, (133), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:27:58,753 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 225 transitions. [2024-11-13 14:27:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 14:27:58,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:58,754 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:58,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 14:27:58,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:58,955 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting func_to_recursive_line_26_to_34_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:27:58,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:58,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1763279397, now seen corresponding path program 1 times [2024-11-13 14:27:58,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:58,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926300554] [2024-11-13 14:27:58,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:58,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:27:58,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32732302] [2024-11-13 14:27:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:58,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:58,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:58,983 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:58,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 14:27:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:59,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:27:59,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:59,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:27:59,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:27:59,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 14:27:59,474 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:59,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:59,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:59,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926300554] [2024-11-13 14:27:59,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:27:59,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32732302] [2024-11-13 14:27:59,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32732302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:27:59,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:27:59,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-11-13 14:27:59,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230481836] [2024-11-13 14:27:59,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:59,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 14:27:59,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:59,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 14:27:59,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:27:59,792 INFO L87 Difference]: Start difference. First operand 197 states and 225 transitions. Second operand has 17 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:28:02,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-13 14:28:06,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-13 14:28:07,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:07,467 INFO L93 Difference]: Finished difference Result 197 states and 225 transitions. [2024-11-13 14:28:07,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 14:28:07,467 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2024-11-13 14:28:07,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:07,468 INFO L225 Difference]: With dead ends: 197 [2024-11-13 14:28:07,468 INFO L226 Difference]: Without dead ends: 196 [2024-11-13 14:28:07,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 87 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2024-11-13 14:28:07,469 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 224 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:07,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 653 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 405 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2024-11-13 14:28:07,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-13 14:28:07,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2024-11-13 14:28:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 146 states have (on average 1.3630136986301369) internal successors, (199), 180 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-13 14:28:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 222 transitions. [2024-11-13 14:28:07,484 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 222 transitions. Word has length 54 [2024-11-13 14:28:07,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:07,485 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 222 transitions. [2024-11-13 14:28:07,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:28:07,485 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 222 transitions. [2024-11-13 14:28:07,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 14:28:07,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:07,486 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:28:07,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 14:28:07,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:07,687 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting func_to_recursive_line_26_to_34_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:28:07,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:07,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1172913434, now seen corresponding path program 1 times [2024-11-13 14:28:07,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:28:07,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672594564] [2024-11-13 14:28:07,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:07,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:28:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:28:07,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63638334] [2024-11-13 14:28:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:07,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:07,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:07,714 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:07,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 14:28:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:07,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 14:28:07,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:07,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:28:08,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:28:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:08,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:28:11,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:28:11,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672594564] [2024-11-13 14:28:11,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:28:11,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63638334] [2024-11-13 14:28:11,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63638334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:28:11,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:28:11,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-13 14:28:11,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289709527] [2024-11-13 14:28:11,616 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:28:11,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:28:11,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:28:11,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:28:11,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2024-11-13 14:28:11,617 INFO L87 Difference]: Start difference. First operand 196 states and 222 transitions. Second operand has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:28:12,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:12,031 INFO L93 Difference]: Finished difference Result 203 states and 222 transitions. [2024-11-13 14:28:12,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:28:12,032 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2024-11-13 14:28:12,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:12,033 INFO L225 Difference]: With dead ends: 203 [2024-11-13 14:28:12,033 INFO L226 Difference]: Without dead ends: 202 [2024-11-13 14:28:12,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=99, Invalid=362, Unknown=1, NotChecked=0, Total=462 [2024-11-13 14:28:12,034 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 84 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:12,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 546 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:28:12,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-13 14:28:12,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 196. [2024-11-13 14:28:12,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 146 states have (on average 1.356164383561644) internal successors, (198), 180 states have internal predecessors, (198), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-13 14:28:12,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 221 transitions. [2024-11-13 14:28:12,053 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 221 transitions. Word has length 55 [2024-11-13 14:28:12,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:12,053 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 221 transitions. [2024-11-13 14:28:12,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:28:12,056 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 221 transitions. [2024-11-13 14:28:12,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 14:28:12,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:12,057 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:28:12,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-13 14:28:12,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 14:28:12,258 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting func_to_recursive_line_26_to_34_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:28:12,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:12,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2000577977, now seen corresponding path program 1 times [2024-11-13 14:28:12,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:28:12,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619436339] [2024-11-13 14:28:12,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:12,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:28:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:28:12,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366058027] [2024-11-13 14:28:12,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:12,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:12,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:12,289 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:12,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 14:28:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:12,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-13 14:28:12,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:12,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:28:12,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:28:12,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:28:12,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:28:13,342 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:13,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:28:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:15,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:28:15,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619436339] [2024-11-13 14:28:15,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:28:15,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366058027] [2024-11-13 14:28:15,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366058027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:28:15,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:28:15,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2024-11-13 14:28:15,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072255992] [2024-11-13 14:28:15,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:28:15,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 14:28:15,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:28:15,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 14:28:15,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2024-11-13 14:28:15,404 INFO L87 Difference]: Start difference. First operand 196 states and 221 transitions. Second operand has 31 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 27 states have internal predecessors, (103), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:28:25,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 14:28:27,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:27,644 INFO L93 Difference]: Finished difference Result 201 states and 221 transitions. [2024-11-13 14:28:27,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-13 14:28:27,646 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 27 states have internal predecessors, (103), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2024-11-13 14:28:27,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:27,647 INFO L225 Difference]: With dead ends: 201 [2024-11-13 14:28:27,647 INFO L226 Difference]: Without dead ends: 198 [2024-11-13 14:28:27,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=494, Invalid=2586, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 14:28:27,648 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 449 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:27,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 789 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-11-13 14:28:27,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-13 14:28:27,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2024-11-13 14:28:27,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 146 states have (on average 1.321917808219178) internal successors, (193), 178 states have internal predecessors, (193), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-13 14:28:27,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 216 transitions. [2024-11-13 14:28:27,669 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 216 transitions. Word has length 56 [2024-11-13 14:28:27,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:27,670 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 216 transitions. [2024-11-13 14:28:27,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 27 states have internal predecessors, (103), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:28:27,670 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 216 transitions. [2024-11-13 14:28:27,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-13 14:28:27,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:27,670 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:28:27,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 14:28:27,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-13 14:28:27,871 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting func_to_recursive_line_26_to_34_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:28:27,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:27,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1589916265, now seen corresponding path program 1 times [2024-11-13 14:28:27,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:28:27,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456142696] [2024-11-13 14:28:27,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:27,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:28:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:28:27,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640126918] [2024-11-13 14:28:27,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:27,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:27,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:27,900 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:27,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 14:28:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:28,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-13 14:28:28,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:28,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:28:28,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:28:28,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:28:28,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:28:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:29,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:28:44,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:28:44,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456142696] [2024-11-13 14:28:44,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:28:44,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640126918] [2024-11-13 14:28:44,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640126918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:28:44,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:28:44,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-13 14:28:44,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752174229] [2024-11-13 14:28:44,316 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:28:44,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 14:28:44,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:28:44,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 14:28:44,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=607, Unknown=1, NotChecked=0, Total=702 [2024-11-13 14:28:44,318 INFO L87 Difference]: Start difference. First operand 194 states and 216 transitions. Second operand has 16 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:28:47,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:47,068 INFO L93 Difference]: Finished difference Result 198 states and 216 transitions. [2024-11-13 14:28:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 14:28:47,069 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2024-11-13 14:28:47,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:47,070 INFO L225 Difference]: With dead ends: 198 [2024-11-13 14:28:47,070 INFO L226 Difference]: Without dead ends: 197 [2024-11-13 14:28:47,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=207, Invalid=982, Unknown=1, NotChecked=0, Total=1190 [2024-11-13 14:28:47,071 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 91 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:47,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 741 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 14:28:47,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-13 14:28:47,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 194. [2024-11-13 14:28:47,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 146 states have (on average 1.3150684931506849) internal successors, (192), 178 states have internal predecessors, (192), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-13 14:28:47,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 215 transitions. [2024-11-13 14:28:47,093 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 215 transitions. Word has length 58 [2024-11-13 14:28:47,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:47,093 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 215 transitions. [2024-11-13 14:28:47,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:28:47,093 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 215 transitions. [2024-11-13 14:28:47,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 14:28:47,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:47,094 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:28:47,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-13 14:28:47,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-13 14:28:47,295 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting func_to_recursive_line_26_to_34_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:28:47,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:47,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2042764074, now seen corresponding path program 1 times [2024-11-13 14:28:47,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:28:47,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267285378] [2024-11-13 14:28:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:47,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:28:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:47,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:28:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:47,771 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:47,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:28:47,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267285378] [2024-11-13 14:28:47,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267285378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:28:47,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239934634] [2024-11-13 14:28:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:47,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:47,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:47,775 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:47,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 14:28:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:47,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:28:47,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:47,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:28:48,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:28:48,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:28:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:48,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:28:48,803 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:48,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239934634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:28:48,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:28:48,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2024-11-13 14:28:48,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028538125] [2024-11-13 14:28:48,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:28:48,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 14:28:48,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:28:48,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:28:48,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-13 14:28:48,806 INFO L87 Difference]: Start difference. First operand 194 states and 215 transitions. Second operand has 21 states, 17 states have (on average 8.0) internal successors, (136), 17 states have internal predecessors, (136), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:28:49,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:49,810 INFO L93 Difference]: Finished difference Result 194 states and 215 transitions. [2024-11-13 14:28:49,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:28:49,810 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 8.0) internal successors, (136), 17 states have internal predecessors, (136), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2024-11-13 14:28:49,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:49,812 INFO L225 Difference]: With dead ends: 194 [2024-11-13 14:28:49,812 INFO L226 Difference]: Without dead ends: 193 [2024-11-13 14:28:49,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 105 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2024-11-13 14:28:49,813 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 234 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:49,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 653 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:28:49,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-13 14:28:49,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2024-11-13 14:28:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 146 states have (on average 1.2945205479452055) internal successors, (189), 177 states have internal predecessors, (189), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-13 14:28:49,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 212 transitions. [2024-11-13 14:28:49,837 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 212 transitions. Word has length 59 [2024-11-13 14:28:49,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:49,837 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 212 transitions. [2024-11-13 14:28:49,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 8.0) internal successors, (136), 17 states have internal predecessors, (136), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:28:49,838 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 212 transitions. [2024-11-13 14:28:49,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 14:28:49,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:49,839 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:28:49,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 14:28:50,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 14:28:50,040 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting func_to_recursive_line_26_to_34_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:28:50,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:50,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1078758579, now seen corresponding path program 1 times [2024-11-13 14:28:50,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:28:50,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978566169] [2024-11-13 14:28:50,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:50,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:28:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:50,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:28:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:50,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 14:28:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:50,343 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:28:50,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:28:50,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978566169] [2024-11-13 14:28:50,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978566169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:28:50,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:28:50,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:28:50,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436129156] [2024-11-13 14:28:50,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:28:50,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:28:50,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:28:50,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:28:50,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:28:50,345 INFO L87 Difference]: Start difference. First operand 193 states and 212 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:28:50,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:50,526 INFO L93 Difference]: Finished difference Result 193 states and 212 transitions. [2024-11-13 14:28:50,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:28:50,527 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 67 [2024-11-13 14:28:50,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:50,529 INFO L225 Difference]: With dead ends: 193 [2024-11-13 14:28:50,529 INFO L226 Difference]: Without dead ends: 192 [2024-11-13 14:28:50,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:28:50,530 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 59 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:50,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 463 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:28:50,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-13 14:28:50,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-11-13 14:28:50,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 146 states have (on average 1.2808219178082192) internal successors, (187), 176 states have internal predecessors, (187), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-13 14:28:50,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 210 transitions. [2024-11-13 14:28:50,560 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 210 transitions. Word has length 67 [2024-11-13 14:28:50,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:50,560 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 210 transitions. [2024-11-13 14:28:50,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:28:50,561 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 210 transitions. [2024-11-13 14:28:50,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 14:28:50,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:50,564 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:28:50,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-13 14:28:50,565 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting func_to_recursive_line_26_to_34_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:28:50,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:50,565 INFO L85 PathProgramCache]: Analyzing trace with hash -918222294, now seen corresponding path program 1 times [2024-11-13 14:28:50,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:28:50,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742704696] [2024-11-13 14:28:50,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:50,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:28:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:50,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:28:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:50,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 14:28:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 14:28:50,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:28:50,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742704696] [2024-11-13 14:28:50,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742704696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:28:50,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382406911] [2024-11-13 14:28:50,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:50,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:50,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:50,866 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:50,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 14:28:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:51,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 14:28:51,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:51,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:28:51,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-13 14:28:51,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:28:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:51,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:28:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:28:51,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382406911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:28:51,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:28:51,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 8] total 22 [2024-11-13 14:28:51,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445290637] [2024-11-13 14:28:51,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:28:51,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 14:28:51,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:28:51,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 14:28:51,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2024-11-13 14:28:51,950 INFO L87 Difference]: Start difference. First operand 192 states and 210 transitions. Second operand has 23 states, 19 states have (on average 8.157894736842104) internal successors, (155), 18 states have internal predecessors, (155), 8 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:28:52,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:52,638 INFO L93 Difference]: Finished difference Result 233 states and 249 transitions. [2024-11-13 14:28:52,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 14:28:52,638 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 8.157894736842104) internal successors, (155), 18 states have internal predecessors, (155), 8 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 68 [2024-11-13 14:28:52,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:52,640 INFO L225 Difference]: With dead ends: 233 [2024-11-13 14:28:52,640 INFO L226 Difference]: Without dead ends: 232 [2024-11-13 14:28:52,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=315, Invalid=1245, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 14:28:52,641 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 452 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:52,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 826 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:28:52,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-13 14:28:52,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 195. [2024-11-13 14:28:52,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 149 states have (on average 1.261744966442953) internal successors, (188), 178 states have internal predecessors, (188), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-13 14:28:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 211 transitions. [2024-11-13 14:28:52,674 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 211 transitions. Word has length 68 [2024-11-13 14:28:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:52,674 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 211 transitions. [2024-11-13 14:28:52,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 8.157894736842104) internal successors, (155), 18 states have internal predecessors, (155), 8 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:28:52,675 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 211 transitions. [2024-11-13 14:28:52,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-13 14:28:52,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:52,679 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:28:52,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 14:28:52,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:52,883 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:28:52,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:52,884 INFO L85 PathProgramCache]: Analyzing trace with hash 466746859, now seen corresponding path program 1 times [2024-11-13 14:28:52,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:28:52,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521950637] [2024-11-13 14:28:52,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:52,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:28:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:53,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:28:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:53,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:28:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:53,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-13 14:28:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:53,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:28:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 14:28:53,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:28:53,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521950637] [2024-11-13 14:28:53,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521950637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:28:53,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253087134] [2024-11-13 14:28:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:53,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:53,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:53,604 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:53,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 14:28:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:53,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 14:28:53,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:53,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 14:28:54,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 14:28:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:54,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:28:54,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253087134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:28:54,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:28:54,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 13 [2024-11-13 14:28:54,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560412221] [2024-11-13 14:28:54,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:28:54,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:28:54,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:28:54,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:28:54,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:28:54,695 INFO L87 Difference]: Start difference. First operand 195 states and 211 transitions. Second operand has 14 states, 13 states have (on average 6.615384615384615) internal successors, (86), 11 states have internal predecessors, (86), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 14:28:58,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:28:59,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:59,425 INFO L93 Difference]: Finished difference Result 195 states and 211 transitions. [2024-11-13 14:28:59,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:28:59,426 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.615384615384615) internal successors, (86), 11 states have internal predecessors, (86), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 72 [2024-11-13 14:28:59,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:59,427 INFO L225 Difference]: With dead ends: 195 [2024-11-13 14:28:59,427 INFO L226 Difference]: Without dead ends: 194 [2024-11-13 14:28:59,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=458, Unknown=2, NotChecked=0, Total=600 [2024-11-13 14:28:59,428 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 191 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:59,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 332 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 365 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-13 14:28:59,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-13 14:28:59,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-11-13 14:28:59,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 149 states have (on average 1.25503355704698) internal successors, (187), 177 states have internal predecessors, (187), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-13 14:28:59,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 210 transitions. [2024-11-13 14:28:59,451 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 210 transitions. Word has length 72 [2024-11-13 14:28:59,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:59,452 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 210 transitions. [2024-11-13 14:28:59,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.615384615384615) internal successors, (86), 11 states have internal predecessors, (86), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 14:28:59,452 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 210 transitions. [2024-11-13 14:28:59,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-13 14:28:59,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:59,453 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:28:59,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-13 14:28:59,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-13 14:28:59,653 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting func_to_recursive_line_26_to_34_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:28:59,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:59,654 INFO L85 PathProgramCache]: Analyzing trace with hash 775656686, now seen corresponding path program 1 times [2024-11-13 14:28:59,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:28:59,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338909250] [2024-11-13 14:28:59,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:59,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:28:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:28:59,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008580883] [2024-11-13 14:28:59,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:59,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:59,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:59,724 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:59,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 14:29:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:00,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 14:29:00,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:00,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:29:00,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:29:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:00,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:01,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:01,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338909250] [2024-11-13 14:29:01,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:29:01,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008580883] [2024-11-13 14:29:01,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008580883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:01,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:29:01,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-13 14:29:01,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082863842] [2024-11-13 14:29:01,492 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:01,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:29:01,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:01,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:29:01,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:29:01,493 INFO L87 Difference]: Start difference. First operand 194 states and 210 transitions. Second operand has 12 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:29:02,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:02,010 INFO L93 Difference]: Finished difference Result 231 states and 245 transitions. [2024-11-13 14:29:02,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:29:02,010 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 72 [2024-11-13 14:29:02,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:02,012 INFO L225 Difference]: With dead ends: 231 [2024-11-13 14:29:02,012 INFO L226 Difference]: Without dead ends: 230 [2024-11-13 14:29:02,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:29:02,013 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 95 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:02,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 689 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:29:02,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-13 14:29:02,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 194. [2024-11-13 14:29:02,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 149 states have (on average 1.2483221476510067) internal successors, (186), 177 states have internal predecessors, (186), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-13 14:29:02,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 209 transitions. [2024-11-13 14:29:02,051 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 209 transitions. Word has length 72 [2024-11-13 14:29:02,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:02,052 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 209 transitions. [2024-11-13 14:29:02,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:29:02,052 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 209 transitions. [2024-11-13 14:29:02,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 14:29:02,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:02,053 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:02,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-13 14:29:02,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-13 14:29:02,254 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:29:02,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:02,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1584250779, now seen corresponding path program 1 times [2024-11-13 14:29:02,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:02,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238993475] [2024-11-13 14:29:02,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:02,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:02,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:29:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:02,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:29:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:02,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-13 14:29:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:02,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:29:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 14:29:02,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:02,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238993475] [2024-11-13 14:29:02,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238993475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:02,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544760171] [2024-11-13 14:29:02,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:02,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:02,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:02,937 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:02,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 14:29:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:03,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 14:29:03,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:03,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 14:29:03,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:29:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:03,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:04,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544760171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:04,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:29:04,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 13 [2024-11-13 14:29:04,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917069193] [2024-11-13 14:29:04,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:04,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:29:04,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:04,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:29:04,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:29:04,257 INFO L87 Difference]: Start difference. First operand 194 states and 209 transitions. Second operand has 14 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 11 states have internal predecessors, (87), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 14:29:08,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:29:08,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:08,903 INFO L93 Difference]: Finished difference Result 194 states and 209 transitions. [2024-11-13 14:29:08,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:29:08,903 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 11 states have internal predecessors, (87), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 73 [2024-11-13 14:29:08,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:08,905 INFO L225 Difference]: With dead ends: 194 [2024-11-13 14:29:08,905 INFO L226 Difference]: Without dead ends: 193 [2024-11-13 14:29:08,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=458, Unknown=2, NotChecked=0, Total=600 [2024-11-13 14:29:08,905 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 244 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:08,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 230 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 251 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-11-13 14:29:08,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-13 14:29:08,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2024-11-13 14:29:08,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 149 states have (on average 1.2416107382550337) internal successors, (185), 176 states have internal predecessors, (185), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-13 14:29:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 208 transitions. [2024-11-13 14:29:08,930 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 208 transitions. Word has length 73 [2024-11-13 14:29:08,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:08,930 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 208 transitions. [2024-11-13 14:29:08,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 11 states have internal predecessors, (87), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 14:29:08,930 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 208 transitions. [2024-11-13 14:29:08,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 14:29:08,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:08,931 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:08,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 14:29:09,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-13 14:29:09,132 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:29:09,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:09,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1867133933, now seen corresponding path program 1 times [2024-11-13 14:29:09,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:09,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936226177] [2024-11-13 14:29:09,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:09,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:09,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:29:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:09,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:29:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:09,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-13 14:29:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:09,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:29:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:29:09,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:09,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936226177] [2024-11-13 14:29:09,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936226177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:09,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71832777] [2024-11-13 14:29:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:09,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:09,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:09,597 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:09,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 14:29:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:09,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 14:29:09,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:10,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 15 [2024-11-13 14:29:10,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 14:29:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:10,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:10,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71832777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:10,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:29:10,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2024-11-13 14:29:10,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494577318] [2024-11-13 14:29:10,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:10,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:29:10,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:10,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:29:10,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:29:10,787 INFO L87 Difference]: Start difference. First operand 193 states and 208 transitions. Second operand has 19 states, 18 states have (on average 6.555555555555555) internal successors, (118), 18 states have internal predecessors, (118), 6 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-13 14:29:11,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:11,717 INFO L93 Difference]: Finished difference Result 193 states and 208 transitions. [2024-11-13 14:29:11,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:29:11,718 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 6.555555555555555) internal successors, (118), 18 states have internal predecessors, (118), 6 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 74 [2024-11-13 14:29:11,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:11,722 INFO L225 Difference]: With dead ends: 193 [2024-11-13 14:29:11,722 INFO L226 Difference]: Without dead ends: 192 [2024-11-13 14:29:11,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 81 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-13 14:29:11,724 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 227 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:11,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 192 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:29:11,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-13 14:29:11,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-11-13 14:29:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 149 states have (on average 1.2348993288590604) internal successors, (184), 175 states have internal predecessors, (184), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-13 14:29:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 207 transitions. [2024-11-13 14:29:11,764 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 207 transitions. Word has length 74 [2024-11-13 14:29:11,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:11,764 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 207 transitions. [2024-11-13 14:29:11,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 6.555555555555555) internal successors, (118), 18 states have internal predecessors, (118), 6 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-13 14:29:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 207 transitions. [2024-11-13 14:29:11,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 14:29:11,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:11,766 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:11,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-13 14:29:11,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-13 14:29:11,967 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting func_to_recursive_line_26_to_34_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:29:11,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:11,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1918229936, now seen corresponding path program 1 times [2024-11-13 14:29:11,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:11,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22838872] [2024-11-13 14:29:11,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:11,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:29:12,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611414609] [2024-11-13 14:29:12,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:12,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:12,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:12,009 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:12,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 14:29:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:12,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-13 14:29:12,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:12,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:29:12,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:29:12,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:29:12,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:29:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:13,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:29:13,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:13,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22838872] [2024-11-13 14:29:13,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:29:13,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611414609] [2024-11-13 14:29:13,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611414609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:29:13,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:29:13,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 25 [2024-11-13 14:29:13,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956610372] [2024-11-13 14:29:13,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:13,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 14:29:13,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:13,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 14:29:13,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-11-13 14:29:13,880 INFO L87 Difference]: Start difference. First operand 192 states and 207 transitions. Second operand has 26 states, 23 states have (on average 5.739130434782608) internal successors, (132), 22 states have internal predecessors, (132), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:29:15,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:15,768 INFO L93 Difference]: Finished difference Result 287 states and 299 transitions. [2024-11-13 14:29:15,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 14:29:15,769 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 5.739130434782608) internal successors, (132), 22 states have internal predecessors, (132), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 74 [2024-11-13 14:29:15,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:15,770 INFO L225 Difference]: With dead ends: 287 [2024-11-13 14:29:15,770 INFO L226 Difference]: Without dead ends: 286 [2024-11-13 14:29:15,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=271, Invalid=1451, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 14:29:15,772 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 299 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:15,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1003 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 14:29:15,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-13 14:29:15,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 236. [2024-11-13 14:29:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 189 states have (on average 1.2380952380952381) internal successors, (234), 216 states have internal predecessors, (234), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (19), 11 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-13 14:29:15,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 263 transitions. [2024-11-13 14:29:15,810 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 263 transitions. Word has length 74 [2024-11-13 14:29:15,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:15,810 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 263 transitions. [2024-11-13 14:29:15,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 5.739130434782608) internal successors, (132), 22 states have internal predecessors, (132), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:29:15,810 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 263 transitions. [2024-11-13 14:29:15,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 14:29:15,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:15,811 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:15,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-13 14:29:16,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-13 14:29:16,012 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:29:16,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:16,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2046577117, now seen corresponding path program 1 times [2024-11-13 14:29:16,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:16,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998148251] [2024-11-13 14:29:16,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:16,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:16,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:29:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:16,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:29:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:16,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-13 14:29:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:16,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:29:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:29:16,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:16,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998148251] [2024-11-13 14:29:16,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998148251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:16,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123818469] [2024-11-13 14:29:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:16,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:16,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:16,488 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:16,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 14:29:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:16,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 14:29:16,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:17,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:29:17,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:29:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:17,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:17,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123818469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:17,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:29:17,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2024-11-13 14:29:17,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60443484] [2024-11-13 14:29:17,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:17,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:29:17,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:17,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:29:17,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:29:17,809 INFO L87 Difference]: Start difference. First operand 236 states and 263 transitions. Second operand has 19 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 6 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-13 14:29:22,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:29:23,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:23,296 INFO L93 Difference]: Finished difference Result 236 states and 263 transitions. [2024-11-13 14:29:23,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 14:29:23,297 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 6 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 75 [2024-11-13 14:29:23,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:23,298 INFO L225 Difference]: With dead ends: 236 [2024-11-13 14:29:23,298 INFO L226 Difference]: Without dead ends: 235 [2024-11-13 14:29:23,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=276, Invalid=980, Unknown=4, NotChecked=0, Total=1260 [2024-11-13 14:29:23,299 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 208 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 22 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:23,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 237 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 606 Invalid, 6 Unknown, 0 Unchecked, 5.0s Time] [2024-11-13 14:29:23,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-13 14:29:23,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2024-11-13 14:29:23,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 189 states have (on average 1.2328042328042328) internal successors, (233), 215 states have internal predecessors, (233), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (19), 11 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-13 14:29:23,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 262 transitions. [2024-11-13 14:29:23,330 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 262 transitions. Word has length 75 [2024-11-13 14:29:23,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:23,331 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 262 transitions. [2024-11-13 14:29:23,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 6 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-13 14:29:23,331 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 262 transitions. [2024-11-13 14:29:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 14:29:23,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:23,331 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:23,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-13 14:29:23,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-13 14:29:23,532 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:29:23,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:23,532 INFO L85 PathProgramCache]: Analyzing trace with hash -980618769, now seen corresponding path program 1 times [2024-11-13 14:29:23,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:23,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067078948] [2024-11-13 14:29:23,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:23,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:29:23,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240719354] [2024-11-13 14:29:23,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:23,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:23,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:23,596 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:23,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 14:29:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:23,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:29:23,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:23,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:29:24,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:29:24,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 14:29:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:29:24,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:24,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-11-13 14:29:24,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:24,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067078948] [2024-11-13 14:29:24,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:29:24,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240719354] [2024-11-13 14:29:24,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240719354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:24,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:29:24,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-13 14:29:24,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215104344] [2024-11-13 14:29:24,913 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:24,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:29:24,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:24,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:29:24,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:29:24,914 INFO L87 Difference]: Start difference. First operand 235 states and 262 transitions. Second operand has 11 states, 9 states have (on average 7.222222222222222) internal successors, (65), 11 states have internal predecessors, (65), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:29:25,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:25,382 INFO L93 Difference]: Finished difference Result 235 states and 262 transitions. [2024-11-13 14:29:25,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:29:25,383 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.222222222222222) internal successors, (65), 11 states have internal predecessors, (65), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 76 [2024-11-13 14:29:25,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:25,385 INFO L225 Difference]: With dead ends: 235 [2024-11-13 14:29:25,385 INFO L226 Difference]: Without dead ends: 234 [2024-11-13 14:29:25,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:29:25,386 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 65 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:25,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 272 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:29:25,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-13 14:29:25,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2024-11-13 14:29:25,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 189 states have (on average 1.2275132275132274) internal successors, (232), 214 states have internal predecessors, (232), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (19), 11 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-13 14:29:25,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 261 transitions. [2024-11-13 14:29:25,422 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 261 transitions. Word has length 76 [2024-11-13 14:29:25,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:25,423 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 261 transitions. [2024-11-13 14:29:25,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.222222222222222) internal successors, (65), 11 states have internal predecessors, (65), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:29:25,423 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 261 transitions. [2024-11-13 14:29:25,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 14:29:25,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:25,424 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:25,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-13 14:29:25,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-13 14:29:25,629 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:29:25,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:25,629 INFO L85 PathProgramCache]: Analyzing trace with hash -334410721, now seen corresponding path program 1 times [2024-11-13 14:29:25,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:25,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155568832] [2024-11-13 14:29:25,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:25,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:29:25,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372791307] [2024-11-13 14:29:25,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:25,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:25,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:25,686 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:25,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 14:29:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:25,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 14:29:25,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:25,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:29:26,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:29:26,436 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:29:26,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:32,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:32,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155568832] [2024-11-13 14:29:32,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:29:32,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372791307] [2024-11-13 14:29:32,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372791307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:32,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:29:32,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-13 14:29:32,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049209064] [2024-11-13 14:29:32,097 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:32,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:29:32,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:32,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:29:32,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=169, Unknown=1, NotChecked=0, Total=210 [2024-11-13 14:29:32,098 INFO L87 Difference]: Start difference. First operand 234 states and 261 transitions. Second operand has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:29:32,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:32,508 INFO L93 Difference]: Finished difference Result 264 states and 292 transitions. [2024-11-13 14:29:32,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:29:32,509 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 77 [2024-11-13 14:29:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:32,510 INFO L225 Difference]: With dead ends: 264 [2024-11-13 14:29:32,510 INFO L226 Difference]: Without dead ends: 263 [2024-11-13 14:29:32,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2024-11-13 14:29:32,511 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 80 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:32,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 299 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:29:32,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-13 14:29:32,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 241. [2024-11-13 14:29:32,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 196 states have (on average 1.219387755102041) internal successors, (239), 220 states have internal predecessors, (239), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (19), 12 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-13 14:29:32,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 268 transitions. [2024-11-13 14:29:32,550 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 268 transitions. Word has length 77 [2024-11-13 14:29:32,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:32,551 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 268 transitions. [2024-11-13 14:29:32,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:29:32,551 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 268 transitions. [2024-11-13 14:29:32,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 14:29:32,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:32,552 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:32,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-13 14:29:32,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-13 14:29:32,753 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:29:32,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:32,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1776797711, now seen corresponding path program 1 times [2024-11-13 14:29:32,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:32,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465152987] [2024-11-13 14:29:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:32,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:29:32,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858705427] [2024-11-13 14:29:32,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:32,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:32,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:32,787 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:32,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 14:29:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:33,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 14:29:33,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:33,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:29:33,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:29:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:29:33,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:42,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:42,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465152987] [2024-11-13 14:29:42,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:29:42,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858705427] [2024-11-13 14:29:42,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858705427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:42,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:29:42,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-13 14:29:42,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878297622] [2024-11-13 14:29:42,526 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:42,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:29:42,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:42,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:29:42,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=286, Unknown=2, NotChecked=0, Total=342 [2024-11-13 14:29:42,527 INFO L87 Difference]: Start difference. First operand 241 states and 268 transitions. Second operand has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:29:42,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:42,992 INFO L93 Difference]: Finished difference Result 263 states and 291 transitions. [2024-11-13 14:29:42,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:29:42,993 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 78 [2024-11-13 14:29:42,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:42,994 INFO L225 Difference]: With dead ends: 263 [2024-11-13 14:29:42,994 INFO L226 Difference]: Without dead ends: 262 [2024-11-13 14:29:42,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=73, Invalid=387, Unknown=2, NotChecked=0, Total=462 [2024-11-13 14:29:42,995 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 86 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:42,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 438 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:29:42,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-13 14:29:43,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 242. [2024-11-13 14:29:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 197 states have (on average 1.218274111675127) internal successors, (240), 221 states have internal predecessors, (240), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (19), 12 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-13 14:29:43,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 269 transitions. [2024-11-13 14:29:43,053 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 269 transitions. Word has length 78 [2024-11-13 14:29:43,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:43,054 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 269 transitions. [2024-11-13 14:29:43,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:29:43,054 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 269 transitions. [2024-11-13 14:29:43,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 14:29:43,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:43,056 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-13 14:29:43,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-13 14:29:43,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-13 14:29:43,257 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting func_to_recursive_line_26_to_34_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:29:43,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:43,258 INFO L85 PathProgramCache]: Analyzing trace with hash 48191158, now seen corresponding path program 1 times [2024-11-13 14:29:43,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:43,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612468239] [2024-11-13 14:29:43,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:43,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:29:43,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852077363] [2024-11-13 14:29:43,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:43,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:43,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:43,306 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:43,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 14:29:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:43,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-13 14:29:43,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:43,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:29:43,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:29:43,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:29:44,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:29:44,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:29:44,530 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:44,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:29:45,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:45,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612468239] [2024-11-13 14:29:45,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:29:45,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852077363] [2024-11-13 14:29:45,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852077363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:29:45,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:29:45,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 31 [2024-11-13 14:29:45,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245072561] [2024-11-13 14:29:45,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:45,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 14:29:45,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:45,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 14:29:45,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=866, Unknown=0, NotChecked=0, Total=992 [2024-11-13 14:29:45,441 INFO L87 Difference]: Start difference. First operand 242 states and 269 transitions. Second operand has 32 states, 29 states have (on average 4.827586206896552) internal successors, (140), 26 states have internal predecessors, (140), 8 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:29:48,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:48,633 INFO L93 Difference]: Finished difference Result 324 states and 339 transitions. [2024-11-13 14:29:48,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 14:29:48,633 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 4.827586206896552) internal successors, (140), 26 states have internal predecessors, (140), 8 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 79 [2024-11-13 14:29:48,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:48,635 INFO L225 Difference]: With dead ends: 324 [2024-11-13 14:29:48,635 INFO L226 Difference]: Without dead ends: 322 [2024-11-13 14:29:48,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=487, Invalid=2935, Unknown=0, NotChecked=0, Total=3422 [2024-11-13 14:29:48,638 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 631 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:48,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 901 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 14:29:48,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-13 14:29:48,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 270. [2024-11-13 14:29:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 221 states have (on average 1.2171945701357465) internal successors, (269), 246 states have internal predecessors, (269), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-13 14:29:48,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 304 transitions. [2024-11-13 14:29:48,671 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 304 transitions. Word has length 79 [2024-11-13 14:29:48,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:48,671 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 304 transitions. [2024-11-13 14:29:48,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 4.827586206896552) internal successors, (140), 26 states have internal predecessors, (140), 8 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:29:48,672 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 304 transitions. [2024-11-13 14:29:48,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 14:29:48,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:48,673 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:48,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-13 14:29:48,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:48,873 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:29:48,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:48,874 INFO L85 PathProgramCache]: Analyzing trace with hash 753845857, now seen corresponding path program 1 times [2024-11-13 14:29:48,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:48,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996875177] [2024-11-13 14:29:48,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:48,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:29:48,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150151069] [2024-11-13 14:29:48,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:48,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:48,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:48,903 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:48,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 14:29:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:49,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 14:29:49,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:49,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:29:51,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:29:51,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 43 [2024-11-13 14:29:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:29:51,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:30:01,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:01,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996875177] [2024-11-13 14:30:01,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:30:01,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150151069] [2024-11-13 14:30:01,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150151069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:30:01,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:30:01,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-11-13 14:30:01,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421439694] [2024-11-13 14:30:01,007 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:30:01,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 14:30:01,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:01,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:30:01,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2024-11-13 14:30:01,008 INFO L87 Difference]: Start difference. First operand 270 states and 304 transitions. Second operand has 21 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 20 states have internal predecessors, (68), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:30:08,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:30:08,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:08,817 INFO L93 Difference]: Finished difference Result 270 states and 304 transitions. [2024-11-13 14:30:08,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 14:30:08,818 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 20 states have internal predecessors, (68), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 79 [2024-11-13 14:30:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:08,820 INFO L225 Difference]: With dead ends: 270 [2024-11-13 14:30:08,824 INFO L226 Difference]: Without dead ends: 268 [2024-11-13 14:30:08,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=199, Invalid=1133, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 14:30:08,825 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 107 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:08,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 259 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-13 14:30:08,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-13 14:30:08,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2024-11-13 14:30:08,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 221 states have (on average 1.2081447963800904) internal successors, (267), 244 states have internal predecessors, (267), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-13 14:30:08,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 302 transitions. [2024-11-13 14:30:08,883 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 302 transitions. Word has length 79 [2024-11-13 14:30:08,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:08,884 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 302 transitions. [2024-11-13 14:30:08,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 20 states have internal predecessors, (68), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:30:08,884 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 302 transitions. [2024-11-13 14:30:08,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 14:30:08,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:08,885 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:30:08,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-13 14:30:09,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:09,086 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:30:09,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:09,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1894385139, now seen corresponding path program 1 times [2024-11-13 14:30:09,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:09,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296058936] [2024-11-13 14:30:09,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:09,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:30:09,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355706514] [2024-11-13 14:30:09,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:09,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:09,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:30:09,117 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:30:09,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 14:30:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:09,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-13 14:30:09,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:30:09,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:30:09,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:30:10,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:30:10,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:30:10,749 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:30:10,749 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:30:12,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-13 14:30:12,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2024-11-13 14:30:17,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:17,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296058936] [2024-11-13 14:30:17,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:30:17,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355706514] [2024-11-13 14:30:17,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355706514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:30:17,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:30:17,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-13 14:30:17,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463431128] [2024-11-13 14:30:17,660 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:30:17,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 14:30:17,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:17,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 14:30:17,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=438, Unknown=1, NotChecked=0, Total=506 [2024-11-13 14:30:17,661 INFO L87 Difference]: Start difference. First operand 268 states and 302 transitions. Second operand has 15 states, 12 states have (on average 5.75) internal successors, (69), 14 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:30:18,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:18,497 INFO L93 Difference]: Finished difference Result 285 states and 322 transitions. [2024-11-13 14:30:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:30:18,498 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 5.75) internal successors, (69), 14 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 80 [2024-11-13 14:30:18,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:18,500 INFO L225 Difference]: With dead ends: 285 [2024-11-13 14:30:18,500 INFO L226 Difference]: Without dead ends: 283 [2024-11-13 14:30:18,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=77, Invalid=474, Unknown=1, NotChecked=0, Total=552 [2024-11-13 14:30:18,500 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 55 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:18,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 365 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:30:18,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-13 14:30:18,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 271. [2024-11-13 14:30:18,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 224 states have (on average 1.2053571428571428) internal successors, (270), 247 states have internal predecessors, (270), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-13 14:30:18,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 305 transitions. [2024-11-13 14:30:18,567 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 305 transitions. Word has length 80 [2024-11-13 14:30:18,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:18,568 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 305 transitions. [2024-11-13 14:30:18,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 5.75) internal successors, (69), 14 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:30:18,568 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 305 transitions. [2024-11-13 14:30:18,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-13 14:30:18,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:18,569 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:30:18,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-13 14:30:18,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:18,770 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:30:18,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:18,770 INFO L85 PathProgramCache]: Analyzing trace with hash -562013195, now seen corresponding path program 1 times [2024-11-13 14:30:18,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:18,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371828113] [2024-11-13 14:30:18,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:18,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:19,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:30:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:19,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:30:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:19,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-13 14:30:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:19,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:30:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 14:30:19,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:19,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371828113] [2024-11-13 14:30:19,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371828113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:30:19,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487182721] [2024-11-13 14:30:19,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:19,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:19,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:30:19,981 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:30:19,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-13 14:30:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:20,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 14:30:20,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:30:20,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:30:20,958 INFO L349 Elim1Store]: treesize reduction 16, result has 55.6 percent of original size [2024-11-13 14:30:20,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 37 [2024-11-13 14:30:21,400 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:30:21,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 50 [2024-11-13 14:30:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:30:21,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:30:21,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487182721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:30:21,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:30:21,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2024-11-13 14:30:21,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913949410] [2024-11-13 14:30:21,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:30:21,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 14:30:21,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:21,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 14:30:21,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2024-11-13 14:30:21,873 INFO L87 Difference]: Start difference. First operand 271 states and 305 transitions. Second operand has 25 states, 22 states have (on average 6.136363636363637) internal successors, (135), 24 states have internal predecessors, (135), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 14:30:25,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:30:27,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:27,756 INFO L93 Difference]: Finished difference Result 301 states and 341 transitions. [2024-11-13 14:30:27,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 14:30:27,756 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 6.136363636363637) internal successors, (135), 24 states have internal predecessors, (135), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 82 [2024-11-13 14:30:27,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:27,758 INFO L225 Difference]: With dead ends: 301 [2024-11-13 14:30:27,758 INFO L226 Difference]: Without dead ends: 300 [2024-11-13 14:30:27,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=269, Invalid=1453, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 14:30:27,759 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 181 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:27,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 235 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 828 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2024-11-13 14:30:27,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-13 14:30:27,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 285. [2024-11-13 14:30:27,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 237 states have (on average 1.2067510548523206) internal successors, (286), 259 states have internal predecessors, (286), 12 states have call successors, (12), 9 states have call predecessors, (12), 15 states have return successors, (29), 16 states have call predecessors, (29), 12 states have call successors, (29) [2024-11-13 14:30:27,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 327 transitions. [2024-11-13 14:30:27,844 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 327 transitions. Word has length 82 [2024-11-13 14:30:27,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:27,845 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 327 transitions. [2024-11-13 14:30:27,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 6.136363636363637) internal successors, (135), 24 states have internal predecessors, (135), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 14:30:27,845 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 327 transitions. [2024-11-13 14:30:27,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 14:30:27,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:27,846 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-13 14:30:27,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-13 14:30:28,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:28,047 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting func_to_recursive_line_26_to_34_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:30:28,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:28,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1097924858, now seen corresponding path program 2 times [2024-11-13 14:30:28,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:28,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090967477] [2024-11-13 14:30:28,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:28,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:30:28,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210686292] [2024-11-13 14:30:28,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:30:28,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:28,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:30:28,091 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:30:28,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 14:30:28,419 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:30:28,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:30:28,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-13 14:30:28,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:30:28,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:30:28,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:30:30,053 INFO L349 Elim1Store]: treesize reduction 18, result has 60.9 percent of original size [2024-11-13 14:30:30,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 73 [2024-11-13 14:30:31,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 50 [2024-11-13 14:30:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:31,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:30:38,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:38,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090967477] [2024-11-13 14:30:38,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:30:38,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210686292] [2024-11-13 14:30:38,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210686292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:30:38,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:30:38,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2024-11-13 14:30:38,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738935062] [2024-11-13 14:30:38,323 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:30:38,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 14:30:38,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:38,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 14:30:38,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=770, Unknown=1, NotChecked=0, Total=930 [2024-11-13 14:30:38,324 INFO L87 Difference]: Start difference. First operand 285 states and 327 transitions. Second operand has 24 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 20 states have internal predecessors, (76), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:30:42,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:30:46,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:30:54,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:31:04,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:31:09,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:31:18,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:31:18,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:18,896 INFO L93 Difference]: Finished difference Result 285 states and 327 transitions. [2024-11-13 14:31:18,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-13 14:31:18,897 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 20 states have internal predecessors, (76), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 83 [2024-11-13 14:31:18,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:18,898 INFO L225 Difference]: With dead ends: 285 [2024-11-13 14:31:18,899 INFO L226 Difference]: Without dead ends: 282 [2024-11-13 14:31:18,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=691, Invalid=2277, Unknown=2, NotChecked=0, Total=2970 [2024-11-13 14:31:18,900 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 223 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 18 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:18,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 804 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 774 Invalid, 6 Unknown, 0 Unchecked, 28.2s Time] [2024-11-13 14:31:18,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-13 14:31:18,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2024-11-13 14:31:18,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 237 states have (on average 1.1561181434599157) internal successors, (274), 256 states have internal predecessors, (274), 12 states have call successors, (12), 9 states have call predecessors, (12), 15 states have return successors, (29), 16 states have call predecessors, (29), 12 states have call successors, (29) [2024-11-13 14:31:18,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 315 transitions. [2024-11-13 14:31:18,954 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 315 transitions. Word has length 83 [2024-11-13 14:31:18,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:18,954 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 315 transitions. [2024-11-13 14:31:18,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 20 states have internal predecessors, (76), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:31:18,954 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 315 transitions. [2024-11-13 14:31:18,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 14:31:18,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:18,955 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:18,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-13 14:31:19,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:19,156 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:31:19,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:19,156 INFO L85 PathProgramCache]: Analyzing trace with hash -242539803, now seen corresponding path program 1 times [2024-11-13 14:31:19,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:19,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417877398] [2024-11-13 14:31:19,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:19,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:19,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:31:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:20,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:31:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:20,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-13 14:31:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:20,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:31:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 14:31:20,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:20,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417877398] [2024-11-13 14:31:20,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417877398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:20,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736605580] [2024-11-13 14:31:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:20,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:20,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:20,295 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:20,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 14:31:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:20,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 14:31:20,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:20,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:31:20,773 WARN L873 $PredicateComparison]: unable to prove that (exists ((func_to_recursive_line_26_to_34_0_~y.offset Int)) (let ((.cse1 (select |c_old(#memory_int#3)| |c_func_to_recursive_line_26_to_34_0_#in~y.base|)) (.cse0 (select (select |c_#memory_int#3| |c_func_to_recursive_line_26_to_34_0_#in~y.base|) func_to_recursive_line_26_to_34_0_~y.offset))) (and (<= .cse0 (+ (select .cse1 func_to_recursive_line_26_to_34_0_~y.offset) 1)) (= (store |c_old(#memory_int#3)| |c_func_to_recursive_line_26_to_34_0_#in~y.base| (store .cse1 func_to_recursive_line_26_to_34_0_~y.offset .cse0)) |c_#memory_int#3|)))) is different from true [2024-11-13 14:31:20,920 INFO L349 Elim1Store]: treesize reduction 16, result has 55.6 percent of original size [2024-11-13 14:31:20,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 32 [2024-11-13 14:31:20,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:31:20,979 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 2 not checked. [2024-11-13 14:31:20,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:31:21,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736605580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:21,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:31:21,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 19 [2024-11-13 14:31:21,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115712759] [2024-11-13 14:31:21,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:31:21,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 14:31:21,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:21,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 14:31:21,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=379, Unknown=1, NotChecked=40, Total=506 [2024-11-13 14:31:21,452 INFO L87 Difference]: Start difference. First operand 282 states and 315 transitions. Second operand has 20 states, 17 states have (on average 7.647058823529412) internal successors, (130), 19 states have internal predecessors, (130), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 14:31:22,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:22,411 INFO L93 Difference]: Finished difference Result 295 states and 329 transitions. [2024-11-13 14:31:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:31:22,411 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 7.647058823529412) internal successors, (130), 19 states have internal predecessors, (130), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) Word has length 83 [2024-11-13 14:31:22,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:22,413 INFO L225 Difference]: With dead ends: 295 [2024-11-13 14:31:22,413 INFO L226 Difference]: Without dead ends: 294 [2024-11-13 14:31:22,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=612, Unknown=1, NotChecked=52, Total=812 [2024-11-13 14:31:22,415 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 82 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:22,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 243 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 470 Invalid, 0 Unknown, 101 Unchecked, 0.7s Time] [2024-11-13 14:31:22,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-13 14:31:22,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 284. [2024-11-13 14:31:22,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 239 states have (on average 1.1548117154811715) internal successors, (276), 258 states have internal predecessors, (276), 12 states have call successors, (12), 9 states have call predecessors, (12), 15 states have return successors, (29), 16 states have call predecessors, (29), 12 states have call successors, (29) [2024-11-13 14:31:22,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 317 transitions. [2024-11-13 14:31:22,490 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 317 transitions. Word has length 83 [2024-11-13 14:31:22,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:22,491 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 317 transitions. [2024-11-13 14:31:22,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 7.647058823529412) internal successors, (130), 19 states have internal predecessors, (130), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 14:31:22,493 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 317 transitions. [2024-11-13 14:31:22,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-13 14:31:22,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:22,495 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:22,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-13 14:31:22,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:22,696 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:31:22,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:22,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1071200759, now seen corresponding path program 1 times [2024-11-13 14:31:22,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:22,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423130896] [2024-11-13 14:31:22,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:22,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:31:22,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134144319] [2024-11-13 14:31:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:22,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:22,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:22,737 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:22,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-13 14:31:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:23,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:31:23,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:23,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:31:23,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-13 14:31:23,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 14:31:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:31:23,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:31:24,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-11-13 14:31:24,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:24,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423130896] [2024-11-13 14:31:24,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:31:24,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134144319] [2024-11-13 14:31:24,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134144319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:24,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:31:24,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-13 14:31:24,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293201157] [2024-11-13 14:31:24,098 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:31:24,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:31:24,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:24,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:31:24,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:31:24,099 INFO L87 Difference]: Start difference. First operand 284 states and 317 transitions. Second operand has 11 states, 9 states have (on average 8.11111111111111) internal successors, (73), 11 states have internal predecessors, (73), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:31:24,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:24,614 INFO L93 Difference]: Finished difference Result 284 states and 317 transitions. [2024-11-13 14:31:24,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:31:24,615 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 8.11111111111111) internal successors, (73), 11 states have internal predecessors, (73), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 84 [2024-11-13 14:31:24,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:24,618 INFO L225 Difference]: With dead ends: 284 [2024-11-13 14:31:24,619 INFO L226 Difference]: Without dead ends: 282 [2024-11-13 14:31:24,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:31:24,620 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 34 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:24,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 305 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:31:24,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-13 14:31:24,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 268. [2024-11-13 14:31:24,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 226 states have (on average 1.1415929203539823) internal successors, (258), 244 states have internal predecessors, (258), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-13 14:31:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 293 transitions. [2024-11-13 14:31:24,691 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 293 transitions. Word has length 84 [2024-11-13 14:31:24,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:24,691 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 293 transitions. [2024-11-13 14:31:24,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 8.11111111111111) internal successors, (73), 11 states have internal predecessors, (73), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:31:24,692 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 293 transitions. [2024-11-13 14:31:24,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-13 14:31:24,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:24,692 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-13 14:31:24,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-13 14:31:24,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-13 14:31:24,897 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting func_to_recursive_line_26_to_34_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:31:24,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:24,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1456163300, now seen corresponding path program 2 times [2024-11-13 14:31:24,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:24,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773545232] [2024-11-13 14:31:24,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:24,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:31:24,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626366802] [2024-11-13 14:31:24,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:31:24,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:24,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:24,941 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:24,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-13 14:31:25,266 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:31:25,266 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:31:25,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 14:31:25,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:25,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:31:25,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:31:25,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:31:26,049 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:26,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:31:28,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:28,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773545232] [2024-11-13 14:31:28,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:31:28,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626366802] [2024-11-13 14:31:28,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626366802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:28,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:31:28,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-13 14:31:28,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457341797] [2024-11-13 14:31:28,937 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:31:28,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 14:31:28,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:28,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 14:31:28,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2024-11-13 14:31:28,938 INFO L87 Difference]: Start difference. First operand 268 states and 293 transitions. Second operand has 16 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:31:30,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:30,430 INFO L93 Difference]: Finished difference Result 282 states and 303 transitions. [2024-11-13 14:31:30,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 14:31:30,430 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 85 [2024-11-13 14:31:30,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:30,431 INFO L225 Difference]: With dead ends: 282 [2024-11-13 14:31:30,431 INFO L226 Difference]: Without dead ends: 281 [2024-11-13 14:31:30,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2024-11-13 14:31:30,432 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 159 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:30,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 852 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:31:30,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-13 14:31:30,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 268. [2024-11-13 14:31:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 226 states have (on average 1.1371681415929205) internal successors, (257), 244 states have internal predecessors, (257), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-13 14:31:30,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 292 transitions. [2024-11-13 14:31:30,481 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 292 transitions. Word has length 85 [2024-11-13 14:31:30,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:30,482 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 292 transitions. [2024-11-13 14:31:30,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:31:30,482 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 292 transitions. [2024-11-13 14:31:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-13 14:31:30,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:30,482 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:30,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-13 14:31:30,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-13 14:31:30,683 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:31:30,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:30,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1152514777, now seen corresponding path program 1 times [2024-11-13 14:31:30,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:30,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319195338] [2024-11-13 14:31:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:30,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:31:30,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789778976] [2024-11-13 14:31:30,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:30,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:30,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:30,707 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:30,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-13 14:31:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:30,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:31:30,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:30,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:31:31,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:31:31,336 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:31:31,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:31:34,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:34,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319195338] [2024-11-13 14:31:34,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:31:34,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789778976] [2024-11-13 14:31:34,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789778976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:34,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:31:34,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-13 14:31:34,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308252367] [2024-11-13 14:31:34,437 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:31:34,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:31:34,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:34,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:31:34,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=169, Unknown=1, NotChecked=0, Total=210 [2024-11-13 14:31:34,438 INFO L87 Difference]: Start difference. First operand 268 states and 292 transitions. Second operand has 11 states, 9 states have (on average 8.222222222222221) internal successors, (74), 11 states have internal predecessors, (74), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:31:34,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:34,761 INFO L93 Difference]: Finished difference Result 277 states and 302 transitions. [2024-11-13 14:31:34,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:31:34,762 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 8.222222222222221) internal successors, (74), 11 states have internal predecessors, (74), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 85 [2024-11-13 14:31:34,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:34,763 INFO L225 Difference]: With dead ends: 277 [2024-11-13 14:31:34,763 INFO L226 Difference]: Without dead ends: 276 [2024-11-13 14:31:34,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2024-11-13 14:31:34,764 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 29 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:34,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 292 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:31:34,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-13 14:31:34,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 270. [2024-11-13 14:31:34,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 228 states have (on average 1.1359649122807018) internal successors, (259), 246 states have internal predecessors, (259), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-13 14:31:34,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 294 transitions. [2024-11-13 14:31:34,831 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 294 transitions. Word has length 85 [2024-11-13 14:31:34,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:34,831 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 294 transitions. [2024-11-13 14:31:34,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 8.222222222222221) internal successors, (74), 11 states have internal predecessors, (74), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:31:34,831 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 294 transitions. [2024-11-13 14:31:34,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-13 14:31:34,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:34,832 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:34,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-13 14:31:35,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-13 14:31:35,033 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:31:35,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:35,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1368219655, now seen corresponding path program 1 times [2024-11-13 14:31:35,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:35,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970424446] [2024-11-13 14:31:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:35,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:31:35,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650154881] [2024-11-13 14:31:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:35,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:35,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:35,069 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:35,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-13 14:31:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:35,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-13 14:31:35,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:35,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:31:35,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:31:36,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:31:36,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:31:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:31:36,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:31:47,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2024-11-13 14:31:53,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:53,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970424446] [2024-11-13 14:31:53,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:31:53,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650154881] [2024-11-13 14:31:53,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650154881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:53,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:31:53,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-13 14:31:53,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200081650] [2024-11-13 14:31:53,808 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:31:53,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 14:31:53,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:53,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 14:31:53,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=609, Unknown=2, NotChecked=0, Total=702 [2024-11-13 14:31:53,809 INFO L87 Difference]: Start difference. First operand 270 states and 294 transitions. Second operand has 17 states, 14 states have (on average 5.357142857142857) internal successors, (75), 16 states have internal predecessors, (75), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:31:54,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:54,817 INFO L93 Difference]: Finished difference Result 276 states and 301 transitions. [2024-11-13 14:31:54,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 14:31:54,818 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 5.357142857142857) internal successors, (75), 16 states have internal predecessors, (75), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 86 [2024-11-13 14:31:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:54,819 INFO L225 Difference]: With dead ends: 276 [2024-11-13 14:31:54,819 INFO L226 Difference]: Without dead ends: 274 [2024-11-13 14:31:54,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=105, Invalid=649, Unknown=2, NotChecked=0, Total=756 [2024-11-13 14:31:54,820 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 22 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:54,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 363 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 14:31:54,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-13 14:31:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 272. [2024-11-13 14:31:54,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 230 states have (on average 1.1347826086956523) internal successors, (261), 248 states have internal predecessors, (261), 12 states have call successors, (12), 9 states have call predecessors, (12), 14 states have return successors, (23), 14 states have call predecessors, (23), 12 states have call successors, (23) [2024-11-13 14:31:54,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 296 transitions. [2024-11-13 14:31:54,884 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 296 transitions. Word has length 86 [2024-11-13 14:31:54,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:54,884 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 296 transitions. [2024-11-13 14:31:54,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 5.357142857142857) internal successors, (75), 16 states have internal predecessors, (75), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:31:54,884 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 296 transitions. [2024-11-13 14:31:54,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-13 14:31:54,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:54,885 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:54,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-13 14:31:55,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:55,086 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:31:55,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:55,087 INFO L85 PathProgramCache]: Analyzing trace with hash -599093765, now seen corresponding path program 1 times [2024-11-13 14:31:55,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:55,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338253246] [2024-11-13 14:31:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:55,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:31:55,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610195725] [2024-11-13 14:31:55,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:55,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:55,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:55,117 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:55,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-13 14:31:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:55,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-13 14:31:55,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:55,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:31:55,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:31:56,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-13 14:31:56,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:31:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:31:57,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:31:59,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2024-11-13 14:32:04,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:04,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338253246] [2024-11-13 14:32:04,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:32:04,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610195725] [2024-11-13 14:32:04,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610195725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:04,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:32:04,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-11-13 14:32:04,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572920715] [2024-11-13 14:32:04,260 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:32:04,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 14:32:04,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:04,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 14:32:04,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=649, Unknown=1, NotChecked=0, Total=756 [2024-11-13 14:32:04,261 INFO L87 Difference]: Start difference. First operand 272 states and 296 transitions. Second operand has 18 states, 15 states have (on average 5.133333333333334) internal successors, (77), 17 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:32:05,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:32:05,193 INFO L93 Difference]: Finished difference Result 276 states and 299 transitions. [2024-11-13 14:32:05,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 14:32:05,193 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 5.133333333333334) internal successors, (77), 17 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 88 [2024-11-13 14:32:05,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:32:05,195 INFO L225 Difference]: With dead ends: 276 [2024-11-13 14:32:05,195 INFO L226 Difference]: Without dead ends: 251 [2024-11-13 14:32:05,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=106, Invalid=649, Unknown=1, NotChecked=0, Total=756 [2024-11-13 14:32:05,196 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 17 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:32:05,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 370 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 14:32:05,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-13 14:32:05,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2024-11-13 14:32:05,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 211 states have (on average 1.1421800947867298) internal successors, (241), 229 states have internal predecessors, (241), 12 states have call successors, (12), 9 states have call predecessors, (12), 12 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-13 14:32:05,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 274 transitions. [2024-11-13 14:32:05,285 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 274 transitions. Word has length 88 [2024-11-13 14:32:05,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:32:05,286 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 274 transitions. [2024-11-13 14:32:05,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 5.133333333333334) internal successors, (77), 17 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:32:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 274 transitions. [2024-11-13 14:32:05,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-13 14:32:05,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:32:05,289 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-13 14:32:05,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-13 14:32:05,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:05,490 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting func_to_recursive_line_26_to_34_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:32:05,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:05,490 INFO L85 PathProgramCache]: Analyzing trace with hash 346772866, now seen corresponding path program 2 times [2024-11-13 14:32:05,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:05,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779802248] [2024-11-13 14:32:05,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:05,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:32:05,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746686035] [2024-11-13 14:32:05,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:32:05,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:05,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:05,524 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:05,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-13 14:32:05,807 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:32:05,807 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:32:05,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 14:32:05,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:06,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 21 [2024-11-13 14:32:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-13 14:32:06,052 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:32:06,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:06,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779802248] [2024-11-13 14:32:06,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:32:06,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746686035] [2024-11-13 14:32:06,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746686035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:32:06,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:32:06,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:32:06,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957429398] [2024-11-13 14:32:06,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:32:06,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:32:06,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:06,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:32:06,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:32:06,054 INFO L87 Difference]: Start difference. First operand 251 states and 274 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:32:06,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:32:06,362 INFO L93 Difference]: Finished difference Result 251 states and 274 transitions. [2024-11-13 14:32:06,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:32:06,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2024-11-13 14:32:06,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:32:06,365 INFO L225 Difference]: With dead ends: 251 [2024-11-13 14:32:06,365 INFO L226 Difference]: Without dead ends: 249 [2024-11-13 14:32:06,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:32:06,366 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 40 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:32:06,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 227 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:32:06,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-13 14:32:06,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2024-11-13 14:32:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 211 states have (on average 1.1090047393364928) internal successors, (234), 227 states have internal predecessors, (234), 12 states have call successors, (12), 9 states have call predecessors, (12), 12 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-13 14:32:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 267 transitions. [2024-11-13 14:32:06,420 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 267 transitions. Word has length 91 [2024-11-13 14:32:06,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:32:06,420 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 267 transitions. [2024-11-13 14:32:06,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:32:06,420 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 267 transitions. [2024-11-13 14:32:06,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-13 14:32:06,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:32:06,421 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-13 14:32:06,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-13 14:32:06,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:06,621 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting func_to_recursive_line_26_to_34_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:32:06,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:06,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1314212429, now seen corresponding path program 2 times [2024-11-13 14:32:06,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:06,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141339739] [2024-11-13 14:32:06,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:06,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:32:06,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7752528] [2024-11-13 14:32:06,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:32:06,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:06,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:06,658 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:06,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-13 14:32:07,543 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:32:07,544 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:32:07,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-13 14:32:07,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:07,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:32:07,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:32:07,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:32:07,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:32:08,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:32:08,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:32:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:08,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 14:32:11,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:11,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141339739] [2024-11-13 14:32:11,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:32:11,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7752528] [2024-11-13 14:32:11,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7752528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:32:11,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:32:11,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 14] total 36 [2024-11-13 14:32:11,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076958558] [2024-11-13 14:32:11,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:32:11,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-13 14:32:11,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:11,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-13 14:32:11,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1192, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 14:32:11,532 INFO L87 Difference]: Start difference. First operand 249 states and 267 transitions. Second operand has 37 states, 34 states have (on average 4.088235294117647) internal successors, (139), 33 states have internal predecessors, (139), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:32:29,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:32:29,754 INFO L93 Difference]: Finished difference Result 249 states and 267 transitions. [2024-11-13 14:32:29,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-13 14:32:29,755 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 4.088235294117647) internal successors, (139), 33 states have internal predecessors, (139), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 94 [2024-11-13 14:32:29,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:32:29,756 INFO L225 Difference]: With dead ends: 249 [2024-11-13 14:32:29,756 INFO L226 Difference]: Without dead ends: 248 [2024-11-13 14:32:29,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1381 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=749, Invalid=5102, Unknown=1, NotChecked=0, Total=5852 [2024-11-13 14:32:29,757 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 461 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:32:29,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 904 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-13 14:32:29,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-13 14:32:29,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-11-13 14:32:29,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 211 states have (on average 1.0900473933649288) internal successors, (230), 226 states have internal predecessors, (230), 12 states have call successors, (12), 9 states have call predecessors, (12), 12 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-13 14:32:29,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 263 transitions. [2024-11-13 14:32:29,807 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 263 transitions. Word has length 94 [2024-11-13 14:32:29,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:32:29,808 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 263 transitions. [2024-11-13 14:32:29,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 4.088235294117647) internal successors, (139), 33 states have internal predecessors, (139), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:32:29,808 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 263 transitions. [2024-11-13 14:32:29,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-13 14:32:29,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:32:29,809 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:29,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-13 14:32:30,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-11-13 14:32:30,010 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:32:30,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:30,010 INFO L85 PathProgramCache]: Analyzing trace with hash 149752553, now seen corresponding path program 2 times [2024-11-13 14:32:30,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:30,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063151362] [2024-11-13 14:32:30,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:30,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:32:30,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811676738] [2024-11-13 14:32:30,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:32:30,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:30,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:30,046 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:30,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-13 14:32:30,447 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:32:30,447 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:32:30,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 14:32:30,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:30,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:32:31,282 INFO L349 Elim1Store]: treesize reduction 162, result has 37.5 percent of original size [2024-11-13 14:32:31,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 91 treesize of output 170 [2024-11-13 14:32:32,881 INFO L349 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2024-11-13 14:32:32,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 22 [2024-11-13 14:32:32,956 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:32:32,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:32:32,969 INFO L349 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2024-11-13 14:32:32,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 25 [2024-11-13 14:32:32,997 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:32:33,018 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-13 14:32:33,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 29 [2024-11-13 14:32:33,038 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-13 14:32:33,068 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-13 14:32:33,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 14:32:33,750 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:32:33,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-13 14:32:33,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 49 [2024-11-13 14:32:33,853 INFO L349 Elim1Store]: treesize reduction 4, result has 91.8 percent of original size [2024-11-13 14:32:33,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2024-11-13 14:32:34,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2024-11-13 14:32:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-13 14:32:34,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:47,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:47,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063151362] [2024-11-13 14:32:47,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:32:47,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811676738] [2024-11-13 14:32:47,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811676738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:47,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:32:47,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-13 14:32:47,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827255122] [2024-11-13 14:32:47,335 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:32:47,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 14:32:47,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:47,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 14:32:47,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=246, Unknown=3, NotChecked=0, Total=306 [2024-11-13 14:32:47,336 INFO L87 Difference]: Start difference. First operand 248 states and 263 transitions. Second operand has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 13 states have internal predecessors, (73), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:32:47,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:32:47,974 INFO L93 Difference]: Finished difference Result 276 states and 297 transitions. [2024-11-13 14:32:47,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:32:47,975 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 13 states have internal predecessors, (73), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 116 [2024-11-13 14:32:47,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:32:47,976 INFO L225 Difference]: With dead ends: 276 [2024-11-13 14:32:47,976 INFO L226 Difference]: Without dead ends: 275 [2024-11-13 14:32:47,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=68, Invalid=271, Unknown=3, NotChecked=0, Total=342 [2024-11-13 14:32:47,977 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 67 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:32:47,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 259 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:32:47,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-13 14:32:48,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 258. [2024-11-13 14:32:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 220 states have (on average 1.0863636363636364) internal successors, (239), 234 states have internal predecessors, (239), 12 states have call successors, (12), 9 states have call predecessors, (12), 13 states have return successors, (27), 14 states have call predecessors, (27), 12 states have call successors, (27) [2024-11-13 14:32:48,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 278 transitions. [2024-11-13 14:32:48,029 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 278 transitions. Word has length 116 [2024-11-13 14:32:48,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:32:48,029 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 278 transitions. [2024-11-13 14:32:48,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 13 states have internal predecessors, (73), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:32:48,030 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 278 transitions. [2024-11-13 14:32:48,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-13 14:32:48,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:32:48,031 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:48,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-13 14:32:48,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-11-13 14:32:48,231 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:32:48,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:48,231 INFO L85 PathProgramCache]: Analyzing trace with hash -2116683029, now seen corresponding path program 2 times [2024-11-13 14:32:48,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:48,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838900274] [2024-11-13 14:32:48,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:48,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:32:48,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799437070] [2024-11-13 14:32:48,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:32:48,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:48,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:48,268 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:48,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-13 14:32:48,648 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:32:48,648 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:32:48,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-13 14:32:48,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:48,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:32:48,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:32:50,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:32:50,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:32:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-13 14:32:51,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:33:02,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-13 14:33:02,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2024-11-13 14:33:02,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:33:02,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838900274] [2024-11-13 14:33:02,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:33:02,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799437070] [2024-11-13 14:33:02,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799437070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:33:02,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:33:02,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2024-11-13 14:33:02,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166599613] [2024-11-13 14:33:02,600 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:33:02,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:33:02,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:33:02,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:33:02,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=672, Unknown=1, NotChecked=0, Total=756 [2024-11-13 14:33:02,601 INFO L87 Difference]: Start difference. First operand 258 states and 278 transitions. Second operand has 19 states, 15 states have (on average 5.0) internal successors, (75), 18 states have internal predecessors, (75), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:33:03,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:33:03,440 INFO L93 Difference]: Finished difference Result 273 states and 296 transitions. [2024-11-13 14:33:03,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 14:33:03,440 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 5.0) internal successors, (75), 18 states have internal predecessors, (75), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 118 [2024-11-13 14:33:03,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:33:03,441 INFO L225 Difference]: With dead ends: 273 [2024-11-13 14:33:03,442 INFO L226 Difference]: Without dead ends: 271 [2024-11-13 14:33:03,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=93, Invalid=718, Unknown=1, NotChecked=0, Total=812 [2024-11-13 14:33:03,442 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 34 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:33:03,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 335 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:33:03,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-13 14:33:03,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 261. [2024-11-13 14:33:03,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 223 states have (on average 1.0852017937219731) internal successors, (242), 237 states have internal predecessors, (242), 12 states have call successors, (12), 9 states have call predecessors, (12), 13 states have return successors, (27), 14 states have call predecessors, (27), 12 states have call successors, (27) [2024-11-13 14:33:03,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 281 transitions. [2024-11-13 14:33:03,506 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 281 transitions. Word has length 118 [2024-11-13 14:33:03,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:33:03,506 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 281 transitions. [2024-11-13 14:33:03,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 5.0) internal successors, (75), 18 states have internal predecessors, (75), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:33:03,506 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 281 transitions. [2024-11-13 14:33:03,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-13 14:33:03,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:33:03,507 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2024-11-13 14:33:03,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-13 14:33:03,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-11-13 14:33:03,711 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting func_to_recursive_line_26_to_34_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-13 14:33:03,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:03,712 INFO L85 PathProgramCache]: Analyzing trace with hash -925380680, now seen corresponding path program 3 times [2024-11-13 14:33:03,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:03,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648739821] [2024-11-13 14:33:03,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:03,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:33:03,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169581738] [2024-11-13 14:33:03,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:33:03,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:33:03,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:33:03,748 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:33:03,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee6dd7-1c93-4690-88fc-e601e64208be/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-13 14:33:04,058 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 14:33:04,058 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:33:04,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 14:33:04,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:33:16,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 46 [2024-11-13 14:33:17,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 35 [2024-11-13 14:33:36,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2024-11-13 14:34:11,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 61 [2024-11-13 14:34:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 88 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-13 14:34:11,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:35:26,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:35:26,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648739821] [2024-11-13 14:35:26,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:35:26,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169581738] [2024-11-13 14:35:26,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169581738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:35:26,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:35:26,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-11-13 14:35:26,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093568256] [2024-11-13 14:35:26,663 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:35:26,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 14:35:26,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:35:26,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:35:26,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=857, Unknown=19, NotChecked=0, Total=992 [2024-11-13 14:35:26,664 INFO L87 Difference]: Start difference. First operand 261 states and 281 transitions. Second operand has 21 states, 20 states have (on average 3.85) internal successors, (77), 20 states have internal predecessors, (77), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:35:31,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:35:35,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:35:40,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:35:44,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:35:49,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:35:57,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:36:01,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:36:05,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:36:09,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:36:15,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:36:19,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:36:23,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:36:27,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:36:53,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:36:57,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:37:09,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:37:27,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:37:31,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:37:35,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:37:54,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 14:37:58,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]