./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 7c6261a52ba91bad3864c182e4633afd262bc5fe07cf18f92cb66db83623b9ae --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 23:07:19,289 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 23:07:19,342 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-22 23:07:19,346 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 23:07:19,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 23:07:19,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 23:07:19,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 23:07:19,372 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 23:07:19,373 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 23:07:19,374 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 23:07:19,374 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 23:07:19,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 23:07:19,392 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 23:07:19,394 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 23:07:19,394 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 23:07:19,394 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 23:07:19,394 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 23:07:19,395 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 23:07:19,395 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 23:07:19,395 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 23:07:19,395 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 23:07:19,396 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 23:07:19,396 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 23:07:19,397 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 23:07:19,397 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 23:07:19,397 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-22 23:07:19,397 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 23:07:19,397 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 23:07:19,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 23:07:19,397 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 23:07:19,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 23:07:19,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 23:07:19,398 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 23:07:19,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 23:07:19,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:07:19,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 23:07:19,399 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 23:07:19,399 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 23:07:19,399 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 23:07:19,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 23:07:19,399 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 23:07:19,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 23:07:19,403 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 23:07:19,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 23:07:19,404 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c6261a52ba91bad3864c182e4633afd262bc5fe07cf18f92cb66db83623b9ae [2024-11-22 23:07:19,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 23:07:19,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 23:07:19,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 23:07:19,636 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 23:07:19,636 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 23:07:19,637 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv-ll.c [2024-11-22 23:07:21,015 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 23:07:21,250 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 23:07:21,251 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv-ll.c [2024-11-22 23:07:21,259 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a319a35c/71a54e95f40f4cbbb59eae34cb007360/FLAGb228c50a5 [2024-11-22 23:07:21,617 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a319a35c/71a54e95f40f4cbbb59eae34cb007360 [2024-11-22 23:07:21,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 23:07:21,621 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 23:07:21,622 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 23:07:21,628 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 23:07:21,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 23:07:21,637 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:07:21" (1/1) ... [2024-11-22 23:07:21,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a3c286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:21, skipping insertion in model container [2024-11-22 23:07:21,638 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:07:21" (1/1) ... [2024-11-22 23:07:21,681 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 23:07:21,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:07:21,978 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 23:07:22,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:07:22,034 INFO L204 MainTranslator]: Completed translation [2024-11-22 23:07:22,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:22 WrapperNode [2024-11-22 23:07:22,038 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 23:07:22,039 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 23:07:22,045 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 23:07:22,045 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 23:07:22,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:22" (1/1) ... [2024-11-22 23:07:22,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:22" (1/1) ... [2024-11-22 23:07:22,097 INFO L138 Inliner]: procedures = 17, calls = 85, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2024-11-22 23:07:22,099 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 23:07:22,099 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 23:07:22,099 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 23:07:22,100 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 23:07:22,108 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:22" (1/1) ... [2024-11-22 23:07:22,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:22" (1/1) ... [2024-11-22 23:07:22,119 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:22" (1/1) ... [2024-11-22 23:07:22,148 INFO L175 MemorySlicer]: Split 49 memory accesses to 7 slices as follows [2, 8, 10, 8, 6, 10, 5]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 12 writes are split as follows [0, 3, 2, 3, 2, 1, 1]. [2024-11-22 23:07:22,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:22" (1/1) ... [2024-11-22 23:07:22,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:22" (1/1) ... [2024-11-22 23:07:22,167 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:22" (1/1) ... [2024-11-22 23:07:22,172 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:22" (1/1) ... [2024-11-22 23:07:22,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:22" (1/1) ... [2024-11-22 23:07:22,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:22" (1/1) ... [2024-11-22 23:07:22,188 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 23:07:22,189 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 23:07:22,189 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 23:07:22,189 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 23:07:22,190 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:22" (1/1) ... [2024-11-22 23:07:22,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:07:22,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:22,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 23:07:22,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 23:07:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 23:07:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 23:07:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 23:07:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 23:07:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 23:07:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 23:07:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-22 23:07:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-22 23:07:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 23:07:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_41_to_52_0 [2024-11-22 23:07:22,316 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_41_to_52_0 [2024-11-22 23:07:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_32_to_55_0 [2024-11-22 23:07:22,316 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_32_to_55_0 [2024-11-22 23:07:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 23:07:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 23:07:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 23:07:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 23:07:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-22 23:07:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-22 23:07:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-22 23:07:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 23:07:22,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 23:07:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 23:07:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 23:07:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 23:07:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 23:07:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-22 23:07:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-22 23:07:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-22 23:07:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-22 23:07:22,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-22 23:07:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 23:07:22,474 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 23:07:22,475 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 23:07:22,771 INFO L? ?]: Removed 69 outVars from TransFormulas that were not future-live. [2024-11-22 23:07:22,771 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 23:07:22,782 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 23:07:22,782 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 23:07:22,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:07:22 BoogieIcfgContainer [2024-11-22 23:07:22,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 23:07:22,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 23:07:22,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 23:07:22,786 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 23:07:22,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:07:21" (1/3) ... [2024-11-22 23:07:22,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aee7dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:07:22, skipping insertion in model container [2024-11-22 23:07:22,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:22" (2/3) ... [2024-11-22 23:07:22,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aee7dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:07:22, skipping insertion in model container [2024-11-22 23:07:22,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:07:22" (3/3) ... [2024-11-22 23:07:22,788 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_cohendiv-ll.c [2024-11-22 23:07:22,801 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 23:07:22,802 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-22 23:07:22,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 23:07:22,858 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;@654a6a7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 23:07:22,858 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-22 23:07:22,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 58 states have (on average 1.6206896551724137) internal successors, (94), 90 states have internal predecessors, (94), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 23:07:22,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 23:07:22,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:22,866 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:07:22,866 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-22 23:07:22,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:22,870 INFO L85 PathProgramCache]: Analyzing trace with hash 17989141, now seen corresponding path program 1 times [2024-11-22 23:07:22,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:22,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59246860] [2024-11-22 23:07:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:22,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:23,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:23,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59246860] [2024-11-22 23:07:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59246860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:23,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:23,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 23:07:23,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690522831] [2024-11-22 23:07:23,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:23,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 23:07:23,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:23,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 23:07:23,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 23:07:23,051 INFO L87 Difference]: Start difference. First operand has 103 states, 58 states have (on average 1.6206896551724137) internal successors, (94), 90 states have internal predecessors, (94), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2024-11-22 23:07:23,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:23,082 INFO L93 Difference]: Finished difference Result 202 states and 238 transitions. [2024-11-22 23:07:23,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 23:07:23,085 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2024-11-22 23:07:23,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:23,092 INFO L225 Difference]: With dead ends: 202 [2024-11-22 23:07:23,092 INFO L226 Difference]: Without dead ends: 96 [2024-11-22 23:07:23,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 23:07:23,100 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:23,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:07:23,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-22 23:07:23,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-22 23:07:23,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 84 states have internal predecessors, (84), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 23:07:23,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2024-11-22 23:07:23,134 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 8 [2024-11-22 23:07:23,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:23,134 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2024-11-22 23:07:23,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2024-11-22 23:07:23,135 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2024-11-22 23:07:23,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 23:07:23,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:23,135 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:07:23,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 23:07:23,135 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-22 23:07:23,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:23,136 INFO L85 PathProgramCache]: Analyzing trace with hash 75247443, now seen corresponding path program 1 times [2024-11-22 23:07:23,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:23,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058907778] [2024-11-22 23:07:23,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:23,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:07:23,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368989904] [2024-11-22 23:07:23,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:23,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:23,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:23,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:23,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 23:07:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:23,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 23:07:23,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:23,359 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 [2024-11-22 23:07:23,409 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 [2024-11-22 23:07:23,472 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 [2024-11-22 23:07:23,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:23,483 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:07:23,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:23,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058907778] [2024-11-22 23:07:23,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:07:23,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368989904] [2024-11-22 23:07:23,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368989904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:23,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:23,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 23:07:23,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775323328] [2024-11-22 23:07:23,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:23,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 23:07:23,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:23,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 23:07:23,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:07:23,489 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 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) [2024-11-22 23:07:23,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:23,687 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2024-11-22 23:07:23,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 23:07:23,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 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 [2024-11-22 23:07:23,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:23,689 INFO L225 Difference]: With dead ends: 118 [2024-11-22 23:07:23,689 INFO L226 Difference]: Without dead ends: 117 [2024-11-22 23:07:23,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-22 23:07:23,690 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 35 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:23,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 597 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:07:23,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-22 23:07:23,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2024-11-22 23:07:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 96 states have internal predecessors, (102), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-22 23:07:23,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2024-11-22 23:07:23,700 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 8 [2024-11-22 23:07:23,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:23,701 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2024-11-22 23:07:23,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 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) [2024-11-22 23:07:23,701 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2024-11-22 23:07:23,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-22 23:07:23,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:23,701 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:07:23,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 23:07:23,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:23,902 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-22 23:07:23,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:23,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1962296526, now seen corresponding path program 1 times [2024-11-22 23:07:23,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:23,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021984413] [2024-11-22 23:07:23,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:23,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:07:23,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525820084] [2024-11-22 23:07:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:23,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:23,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:23,963 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:23,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 23:07:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:24,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 23:07:24,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:24,062 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 [2024-11-22 23:07:24,082 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 [2024-11-22 23:07:24,132 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 [2024-11-22 23:07:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:24,146 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:07:24,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:24,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021984413] [2024-11-22 23:07:24,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:07:24,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525820084] [2024-11-22 23:07:24,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525820084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:24,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:24,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 23:07:24,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169700244] [2024-11-22 23:07:24,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:24,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 23:07:24,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:24,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 23:07:24,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:07:24,149 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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) [2024-11-22 23:07:24,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:24,306 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2024-11-22 23:07:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 23:07:24,306 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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 9 [2024-11-22 23:07:24,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:24,307 INFO L225 Difference]: With dead ends: 117 [2024-11-22 23:07:24,307 INFO L226 Difference]: Without dead ends: 116 [2024-11-22 23:07:24,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-22 23:07:24,308 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 32 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:24,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 601 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:07:24,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-22 23:07:24,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2024-11-22 23:07:24,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 65 states have (on average 1.5538461538461539) internal successors, (101), 96 states have internal predecessors, (101), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-22 23:07:24,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2024-11-22 23:07:24,323 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 9 [2024-11-22 23:07:24,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:24,324 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2024-11-22 23:07:24,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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) [2024-11-22 23:07:24,324 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2024-11-22 23:07:24,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-22 23:07:24,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:24,324 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:07:24,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 23:07:24,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-22 23:07:24,529 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_32_to_55_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-22 23:07:24,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:24,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1297112058, now seen corresponding path program 1 times [2024-11-22 23:07:24,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:24,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926863813] [2024-11-22 23:07:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:24,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:07:24,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37473527] [2024-11-22 23:07:24,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:24,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:24,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:24,559 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:24,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 23:07:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:24,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 23:07:24,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:24,657 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 [2024-11-22 23:07:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:24,722 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:07:24,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:24,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926863813] [2024-11-22 23:07:24,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:07:24,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37473527] [2024-11-22 23:07:24,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37473527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:24,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:24,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 23:07:24,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873392261] [2024-11-22 23:07:24,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:24,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:07:24,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:24,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:07:24,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:07:24,725 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2024-11-22 23:07:24,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:24,840 INFO L93 Difference]: Finished difference Result 184 states and 199 transitions. [2024-11-22 23:07:24,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 23:07:24,840 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), 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 16 [2024-11-22 23:07:24,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:24,842 INFO L225 Difference]: With dead ends: 184 [2024-11-22 23:07:24,842 INFO L226 Difference]: Without dead ends: 182 [2024-11-22 23:07:24,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-22 23:07:24,843 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 126 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:24,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 435 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:07:24,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-22 23:07:24,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2024-11-22 23:07:24,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 92 states have (on average 1.5543478260869565) internal successors, (143), 125 states have internal predecessors, (143), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2024-11-22 23:07:24,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 180 transitions. [2024-11-22 23:07:24,853 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 180 transitions. Word has length 16 [2024-11-22 23:07:24,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:24,853 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 180 transitions. [2024-11-22 23:07:24,854 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), 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) [2024-11-22 23:07:24,854 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 180 transitions. [2024-11-22 23:07:24,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-22 23:07:24,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:24,854 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:07:24,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 23:07:25,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:25,059 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_32_to_55_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-22 23:07:25,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:25,060 INFO L85 PathProgramCache]: Analyzing trace with hash 984173276, now seen corresponding path program 1 times [2024-11-22 23:07:25,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:25,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770473435] [2024-11-22 23:07:25,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:25,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:07:25,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482503574] [2024-11-22 23:07:25,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:25,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:25,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:25,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:25,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 23:07:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:25,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-22 23:07:25,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:25,240 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 [2024-11-22 23:07:25,242 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 [2024-11-22 23:07:25,253 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 [2024-11-22 23:07:25,258 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 25 treesize of output 17 [2024-11-22 23:07:25,261 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 [2024-11-22 23:07:25,374 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 7 treesize of output 3 [2024-11-22 23:07:25,407 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 [2024-11-22 23:07:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:25,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:07:25,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:25,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770473435] [2024-11-22 23:07:25,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:07:25,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482503574] [2024-11-22 23:07:25,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482503574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:25,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:25,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 23:07:25,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99733001] [2024-11-22 23:07:25,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:25,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 23:07:25,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:25,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 23:07:25,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 23:07:25,425 INFO L87 Difference]: Start difference. First operand 146 states and 180 transitions. Second operand has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 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) [2024-11-22 23:07:29,583 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] [2024-11-22 23:07:29,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:29,638 INFO L93 Difference]: Finished difference Result 178 states and 193 transitions. [2024-11-22 23:07:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 23:07:29,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 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 18 [2024-11-22 23:07:29,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:29,640 INFO L225 Difference]: With dead ends: 178 [2024-11-22 23:07:29,640 INFO L226 Difference]: Without dead ends: 177 [2024-11-22 23:07:29,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-22 23:07:29,645 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 97 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:29,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 569 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 205 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-22 23:07:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-22 23:07:29,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 146. [2024-11-22 23:07:29,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 125 states have internal predecessors, (142), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2024-11-22 23:07:29,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 179 transitions. [2024-11-22 23:07:29,661 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 179 transitions. Word has length 18 [2024-11-22 23:07:29,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:29,661 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 179 transitions. [2024-11-22 23:07:29,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 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) [2024-11-22 23:07:29,661 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 179 transitions. [2024-11-22 23:07:29,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-22 23:07:29,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:29,662 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:07:29,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 23:07:29,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:29,867 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_32_to_55_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-22 23:07:29,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:29,867 INFO L85 PathProgramCache]: Analyzing trace with hash 444600531, now seen corresponding path program 1 times [2024-11-22 23:07:29,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:29,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400240205] [2024-11-22 23:07:29,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:29,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:07:29,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1309093568] [2024-11-22 23:07:29,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:29,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:29,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:29,890 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:29,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 23:07:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:29,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-22 23:07:29,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:30,002 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 [2024-11-22 23:07:30,005 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 [2024-11-22 23:07:30,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-22 23:07:30,019 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 [2024-11-22 23:07:30,022 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 [2024-11-22 23:07:30,112 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 7 treesize of output 3 [2024-11-22 23:07:30,130 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 [2024-11-22 23:07:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:30,142 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:07:30,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:30,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400240205] [2024-11-22 23:07:30,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:07:30,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309093568] [2024-11-22 23:07:30,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309093568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:30,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:30,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 23:07:30,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291132967] [2024-11-22 23:07:30,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:30,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 23:07:30,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:30,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 23:07:30,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 23:07:30,144 INFO L87 Difference]: Start difference. First operand 146 states and 179 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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) [2024-11-22 23:07:34,321 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] [2024-11-22 23:07:34,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:34,392 INFO L93 Difference]: Finished difference Result 177 states and 192 transitions. [2024-11-22 23:07:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 23:07:34,393 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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 19 [2024-11-22 23:07:34,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:34,394 INFO L225 Difference]: With dead ends: 177 [2024-11-22 23:07:34,394 INFO L226 Difference]: Without dead ends: 176 [2024-11-22 23:07:34,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-22 23:07:34,395 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 109 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:34,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 542 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 196 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-22 23:07:34,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-22 23:07:34,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 146. [2024-11-22 23:07:34,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 92 states have (on average 1.5326086956521738) internal successors, (141), 125 states have internal predecessors, (141), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2024-11-22 23:07:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 178 transitions. [2024-11-22 23:07:34,405 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 178 transitions. Word has length 19 [2024-11-22 23:07:34,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:34,406 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 178 transitions. [2024-11-22 23:07:34,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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) [2024-11-22 23:07:34,406 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 178 transitions. [2024-11-22 23:07:34,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-22 23:07:34,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:34,407 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 23:07:34,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 23:07:34,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:34,611 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_41_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-22 23:07:34,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:34,611 INFO L85 PathProgramCache]: Analyzing trace with hash -126620797, now seen corresponding path program 1 times [2024-11-22 23:07:34,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:34,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069010329] [2024-11-22 23:07:34,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:34,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:07:34,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804039385] [2024-11-22 23:07:34,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:34,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:34,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:34,643 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:34,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 23:07:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:34,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-22 23:07:34,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:34,754 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 [2024-11-22 23:07:34,880 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 [2024-11-22 23:07:34,930 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 [2024-11-22 23:07:34,935 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 [2024-11-22 23:07:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:07:34,947 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:07:34,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:34,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069010329] [2024-11-22 23:07:34,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:07:34,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804039385] [2024-11-22 23:07:34,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804039385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:34,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:34,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 23:07:34,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884144823] [2024-11-22 23:07:34,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:34,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 23:07:34,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:34,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 23:07:34,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-22 23:07:34,950 INFO L87 Difference]: Start difference. First operand 146 states and 178 transitions. Second operand has 13 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 23:07:38,964 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] [2024-11-22 23:07:39,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:39,290 INFO L93 Difference]: Finished difference Result 224 states and 281 transitions. [2024-11-22 23:07:39,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 23:07:39,291 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-11-22 23:07:39,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:39,293 INFO L225 Difference]: With dead ends: 224 [2024-11-22 23:07:39,294 INFO L226 Difference]: Without dead ends: 223 [2024-11-22 23:07:39,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-22 23:07:39,294 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 208 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:39,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 679 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 389 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-22 23:07:39,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-22 23:07:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 184. [2024-11-22 23:07:39,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 122 states have (on average 1.5327868852459017) internal successors, (187), 155 states have internal predecessors, (187), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (27), 23 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-22 23:07:39,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2024-11-22 23:07:39,306 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 238 transitions. Word has length 30 [2024-11-22 23:07:39,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:39,307 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 238 transitions. [2024-11-22 23:07:39,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 23:07:39,307 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 238 transitions. [2024-11-22 23:07:39,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-22 23:07:39,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:39,308 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 23:07:39,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 23:07:39,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:39,512 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-22 23:07:39,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:39,512 INFO L85 PathProgramCache]: Analyzing trace with hash -130267762, now seen corresponding path program 1 times [2024-11-22 23:07:39,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:39,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620342426] [2024-11-22 23:07:39,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:39,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:07:39,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [878902775] [2024-11-22 23:07:39,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:39,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:39,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:39,549 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:39,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 23:07:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:39,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 23:07:39,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:39,679 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 [2024-11-22 23:07:39,768 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 [2024-11-22 23:07:39,772 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 [2024-11-22 23:07:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 23:07:39,781 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:07:39,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:39,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620342426] [2024-11-22 23:07:39,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:07:39,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878902775] [2024-11-22 23:07:39,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878902775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:39,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:39,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 23:07:39,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314511925] [2024-11-22 23:07:39,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:39,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 23:07:39,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:39,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 23:07:39,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:07:39,783 INFO L87 Difference]: Start difference. First operand 184 states and 238 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 23:07:43,795 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] [2024-11-22 23:07:44,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:44,069 INFO L93 Difference]: Finished difference Result 192 states and 248 transitions. [2024-11-22 23:07:44,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 23:07:44,070 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-22 23:07:44,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:44,071 INFO L225 Difference]: With dead ends: 192 [2024-11-22 23:07:44,071 INFO L226 Difference]: Without dead ends: 191 [2024-11-22 23:07:44,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-22 23:07:44,072 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 143 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:44,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 112 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 317 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-22 23:07:44,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-22 23:07:44,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 188. [2024-11-22 23:07:44,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 125 states have (on average 1.52) internal successors, (190), 157 states have internal predecessors, (190), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2024-11-22 23:07:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 242 transitions. [2024-11-22 23:07:44,093 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 242 transitions. Word has length 30 [2024-11-22 23:07:44,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:44,095 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 242 transitions. [2024-11-22 23:07:44,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 23:07:44,095 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 242 transitions. [2024-11-22 23:07:44,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-22 23:07:44,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:44,096 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 23:07:44,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 23:07:44,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:44,297 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_41_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-22 23:07:44,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:44,298 INFO L85 PathProgramCache]: Analyzing trace with hash 369722665, now seen corresponding path program 1 times [2024-11-22 23:07:44,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:44,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717018905] [2024-11-22 23:07:44,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:44,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:07:44,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979737898] [2024-11-22 23:07:44,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:44,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:44,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:44,333 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:44,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 23:07:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:44,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-22 23:07:44,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:44,439 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 [2024-11-22 23:07:44,452 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 [2024-11-22 23:07:44,473 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 [2024-11-22 23:07:44,476 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 19 treesize of output 11 [2024-11-22 23:07:44,677 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 [2024-11-22 23:07:44,700 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 [2024-11-22 23:07:44,765 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 [2024-11-22 23:07:44,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:07:44,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:07:44,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:44,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717018905] [2024-11-22 23:07:44,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:07:44,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979737898] [2024-11-22 23:07:44,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979737898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:44,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:44,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 23:07:44,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769218932] [2024-11-22 23:07:44,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:44,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 23:07:44,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:44,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 23:07:44,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-22 23:07:44,792 INFO L87 Difference]: Start difference. First operand 188 states and 242 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:07:48,800 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] [2024-11-22 23:07:53,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:07:57,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:08:01,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:08:05,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:08:05,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:05,399 INFO L93 Difference]: Finished difference Result 246 states and 279 transitions. [2024-11-22 23:08:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 23:08:05,400 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2024-11-22 23:08:05,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:05,401 INFO L225 Difference]: With dead ends: 246 [2024-11-22 23:08:05,401 INFO L226 Difference]: Without dead ends: 245 [2024-11-22 23:08:05,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2024-11-22 23:08:05,402 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 213 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 31 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:05,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 760 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 590 Invalid, 5 Unknown, 0 Unchecked, 20.4s Time] [2024-11-22 23:08:05,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-22 23:08:05,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 188. [2024-11-22 23:08:05,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 125 states have (on average 1.512) internal successors, (189), 157 states have internal predecessors, (189), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2024-11-22 23:08:05,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 241 transitions. [2024-11-22 23:08:05,413 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 241 transitions. Word has length 31 [2024-11-22 23:08:05,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:05,414 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 241 transitions. [2024-11-22 23:08:05,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:08:05,414 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 241 transitions. [2024-11-22 23:08:05,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-22 23:08:05,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:05,415 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 23:08:05,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 23:08:05,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-22 23:08:05,619 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-22 23:08:05,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:05,620 INFO L85 PathProgramCache]: Analyzing trace with hash 256666811, now seen corresponding path program 1 times [2024-11-22 23:08:05,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:05,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602180058] [2024-11-22 23:08:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:05,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:08:05,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340563539] [2024-11-22 23:08:05,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:05,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:05,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:05,640 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:08:05,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 23:08:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:05,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 23:08:05,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:08:05,755 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 [2024-11-22 23:08:05,768 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 [2024-11-22 23:08:05,858 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 [2024-11-22 23:08:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 23:08:05,869 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:08:05,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:05,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602180058] [2024-11-22 23:08:05,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:08:05,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340563539] [2024-11-22 23:08:05,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340563539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:05,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:05,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 23:08:05,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537073755] [2024-11-22 23:08:05,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:05,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 23:08:05,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:05,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 23:08:05,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:08:05,872 INFO L87 Difference]: Start difference. First operand 188 states and 241 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 23:08:09,880 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] [2024-11-22 23:08:10,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:10,167 INFO L93 Difference]: Finished difference Result 192 states and 246 transitions. [2024-11-22 23:08:10,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 23:08:10,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-22 23:08:10,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:10,172 INFO L225 Difference]: With dead ends: 192 [2024-11-22 23:08:10,172 INFO L226 Difference]: Without dead ends: 191 [2024-11-22 23:08:10,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-22 23:08:10,172 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 141 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:10,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 116 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 313 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-22 23:08:10,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-22 23:08:10,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2024-11-22 23:08:10,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 126 states have (on average 1.507936507936508) internal successors, (190), 158 states have internal predecessors, (190), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2024-11-22 23:08:10,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 242 transitions. [2024-11-22 23:08:10,188 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 242 transitions. Word has length 31 [2024-11-22 23:08:10,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:10,188 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 242 transitions. [2024-11-22 23:08:10,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 23:08:10,188 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 242 transitions. [2024-11-22 23:08:10,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-22 23:08:10,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:10,189 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 23:08:10,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 23:08:10,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 23:08:10,391 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-22 23:08:10,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:10,391 INFO L85 PathProgramCache]: Analyzing trace with hash -633263312, now seen corresponding path program 1 times [2024-11-22 23:08:10,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:10,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254694176] [2024-11-22 23:08:10,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:10,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:08:10,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345739256] [2024-11-22 23:08:10,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:10,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:10,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:10,424 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:08:10,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 23:08:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:10,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 23:08:10,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:08:10,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:08:10,534 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 25 treesize of output 17 [2024-11-22 23:08:10,537 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 [2024-11-22 23:08:10,540 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 [2024-11-22 23:08:10,594 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 7 treesize of output 3 [2024-11-22 23:08:10,605 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 17 treesize of output 9 [2024-11-22 23:08:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 23:08:10,614 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:08:10,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:10,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254694176] [2024-11-22 23:08:10,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:08:10,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345739256] [2024-11-22 23:08:10,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345739256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:10,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:10,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 23:08:10,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376135749] [2024-11-22 23:08:10,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:10,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:08:10,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:10,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:08:10,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:08:10,615 INFO L87 Difference]: Start difference. First operand 189 states and 242 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 23:08:10,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:10,925 INFO L93 Difference]: Finished difference Result 192 states and 245 transitions. [2024-11-22 23:08:10,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 23:08:10,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-11-22 23:08:10,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:10,926 INFO L225 Difference]: With dead ends: 192 [2024-11-22 23:08:10,926 INFO L226 Difference]: Without dead ends: 191 [2024-11-22 23:08:10,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:08:10,927 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 62 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:10,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 162 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 23:08:10,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-22 23:08:10,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2024-11-22 23:08:10,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 127 states have (on average 1.5039370078740157) internal successors, (191), 159 states have internal predecessors, (191), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2024-11-22 23:08:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 243 transitions. [2024-11-22 23:08:10,937 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 243 transitions. Word has length 32 [2024-11-22 23:08:10,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:10,937 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 243 transitions. [2024-11-22 23:08:10,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 23:08:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 243 transitions. [2024-11-22 23:08:10,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-22 23:08:10,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:10,938 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 23:08:10,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 23:08:11,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 23:08:11,143 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-22 23:08:11,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:11,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1843673949, now seen corresponding path program 1 times [2024-11-22 23:08:11,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:11,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973265512] [2024-11-22 23:08:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:11,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:08:11,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889477966] [2024-11-22 23:08:11,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:11,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:11,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:11,167 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:08:11,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 23:08:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:11,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-22 23:08:11,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:08:11,269 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 [2024-11-22 23:08:11,272 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 [2024-11-22 23:08:11,281 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 [2024-11-22 23:08:11,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-22 23:08:11,287 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 [2024-11-22 23:08:11,459 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 7 treesize of output 3 [2024-11-22 23:08:11,470 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 [2024-11-22 23:08:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 23:08:11,479 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:08:11,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:11,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973265512] [2024-11-22 23:08:11,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:08:11,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889477966] [2024-11-22 23:08:11,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889477966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:11,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:11,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 23:08:11,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520079570] [2024-11-22 23:08:11,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:11,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 23:08:11,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:11,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 23:08:11,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:08:11,481 INFO L87 Difference]: Start difference. First operand 190 states and 243 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 23:08:11,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:11,881 INFO L93 Difference]: Finished difference Result 192 states and 244 transitions. [2024-11-22 23:08:11,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 23:08:11,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-22 23:08:11,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:11,885 INFO L225 Difference]: With dead ends: 192 [2024-11-22 23:08:11,885 INFO L226 Difference]: Without dead ends: 184 [2024-11-22 23:08:11,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 23:08:11,886 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 64 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:11,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 164 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 23:08:11,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-22 23:08:11,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-11-22 23:08:11,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 122 states have (on average 1.5163934426229508) internal successors, (185), 154 states have internal predecessors, (185), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (27), 23 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-22 23:08:11,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 236 transitions. [2024-11-22 23:08:11,896 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 236 transitions. Word has length 33 [2024-11-22 23:08:11,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:11,896 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 236 transitions. [2024-11-22 23:08:11,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 23:08:11,896 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 236 transitions. [2024-11-22 23:08:11,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-22 23:08:11,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:11,897 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:08:11,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 23:08:12,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 23:08:12,101 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_41_to_52_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-22 23:08:12,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:12,101 INFO L85 PathProgramCache]: Analyzing trace with hash -484394221, now seen corresponding path program 1 times [2024-11-22 23:08:12,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:12,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996683974] [2024-11-22 23:08:12,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:12,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:08:12,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425810955] [2024-11-22 23:08:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:12,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:12,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:12,139 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:08:12,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 23:08:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:12,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-22 23:08:12,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:08:12,248 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 [2024-11-22 23:08:12,264 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 [2024-11-22 23:08:12,510 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 [2024-11-22 23:08:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 23:08:12,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:08:12,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:12,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996683974] [2024-11-22 23:08:12,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:08:12,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425810955] [2024-11-22 23:08:12,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425810955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:08:12,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:08:12,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-22 23:08:12,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738469965] [2024-11-22 23:08:12,597 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 23:08:12,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 23:08:12,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:12,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 23:08:12,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-22 23:08:12,598 INFO L87 Difference]: Start difference. First operand 184 states and 236 transitions. Second operand has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 23:08:12,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:12,919 INFO L93 Difference]: Finished difference Result 209 states and 245 transitions. [2024-11-22 23:08:12,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 23:08:12,919 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2024-11-22 23:08:12,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:12,920 INFO L225 Difference]: With dead ends: 209 [2024-11-22 23:08:12,920 INFO L226 Difference]: Without dead ends: 208 [2024-11-22 23:08:12,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-22 23:08:12,921 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 151 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:12,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 561 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 23:08:12,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-22 23:08:12,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 184. [2024-11-22 23:08:12,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 122 states have (on average 1.5) internal successors, (183), 154 states have internal predecessors, (183), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (27), 23 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-22 23:08:12,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 234 transitions. [2024-11-22 23:08:12,934 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 234 transitions. Word has length 38 [2024-11-22 23:08:12,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:12,934 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 234 transitions. [2024-11-22 23:08:12,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 23:08:12,934 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 234 transitions. [2024-11-22 23:08:12,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-22 23:08:12,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:12,935 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:08:12,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 23:08:13,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 23:08:13,139 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_41_to_52_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-22 23:08:13,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:13,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2131318881, now seen corresponding path program 1 times [2024-11-22 23:08:13,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:13,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206151231] [2024-11-22 23:08:13,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:13,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:08:13,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236748200] [2024-11-22 23:08:13,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:13,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:13,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:13,185 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:08:13,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 23:08:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:13,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-22 23:08:13,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:08:13,305 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 [2024-11-22 23:08:13,317 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 [2024-11-22 23:08:13,568 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 [2024-11-22 23:08:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 23:08:13,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:08:13,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:13,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206151231] [2024-11-22 23:08:13,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:08:13,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236748200] [2024-11-22 23:08:13,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236748200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:08:13,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:08:13,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-22 23:08:13,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302329489] [2024-11-22 23:08:13,693 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 23:08:13,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 23:08:13,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:13,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 23:08:13,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-22 23:08:13,694 INFO L87 Difference]: Start difference. First operand 184 states and 234 transitions. Second operand has 13 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 23:08:14,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:14,017 INFO L93 Difference]: Finished difference Result 208 states and 243 transitions. [2024-11-22 23:08:14,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 23:08:14,018 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2024-11-22 23:08:14,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:14,019 INFO L225 Difference]: With dead ends: 208 [2024-11-22 23:08:14,019 INFO L226 Difference]: Without dead ends: 207 [2024-11-22 23:08:14,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-22 23:08:14,020 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 104 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:14,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 658 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:08:14,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-22 23:08:14,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 184. [2024-11-22 23:08:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 122 states have (on average 1.4836065573770492) internal successors, (181), 154 states have internal predecessors, (181), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (27), 23 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-22 23:08:14,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 232 transitions. [2024-11-22 23:08:14,030 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 232 transitions. Word has length 39 [2024-11-22 23:08:14,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:14,030 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 232 transitions. [2024-11-22 23:08:14,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-22 23:08:14,030 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 232 transitions. [2024-11-22 23:08:14,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-22 23:08:14,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:14,031 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:08:14,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-22 23:08:14,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 23:08:14,231 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_41_to_52_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-22 23:08:14,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:14,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1646375787, now seen corresponding path program 1 times [2024-11-22 23:08:14,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:14,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521074763] [2024-11-22 23:08:14,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:14,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat