./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_ps5.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 6f3643eb7577eb0ba12bcd7a7f20ec9e29deb69664963fe3575fff225cd03ad0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 05:01:43,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 05:01:43,162 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 05:01:43,166 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 05:01:43,166 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 05:01:43,184 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 05:01:43,185 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 05:01:43,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 05:01:43,185 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 05:01:43,186 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 05:01:43,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 05:01:43,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 05:01:43,187 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 05:01:43,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 05:01:43,188 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 05:01:43,188 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 05:01:43,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 05:01:43,189 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 05:01:43,189 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 05:01:43,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 05:01:43,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 05:01:43,190 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 05:01:43,190 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 05:01:43,191 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 05:01:43,191 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 05:01:43,191 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 05:01:43,192 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 05:01:43,192 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 05:01:43,192 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 05:01:43,193 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 05:01:43,193 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 05:01:43,193 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 05:01:43,194 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 05:01:43,194 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 05:01:43,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 05:01:43,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 05:01:43,195 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 05:01:43,195 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 05:01:43,195 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 05:01:43,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 05:01:43,196 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 05:01:43,196 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 05:01:43,196 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 05:01:43,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 05:01:43,197 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f3643eb7577eb0ba12bcd7a7f20ec9e29deb69664963fe3575fff225cd03ad0 [2024-11-17 05:01:43,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 05:01:43,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 05:01:43,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 05:01:43,504 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 05:01:43,505 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 05:01:43,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps5.c [2024-11-17 05:01:44,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 05:01:45,087 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 05:01:45,088 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5.c [2024-11-17 05:01:45,096 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d3142668/2788b355d31b4a67bbf238fab6634fb6/FLAG9cd9739df [2024-11-17 05:01:45,475 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d3142668/2788b355d31b4a67bbf238fab6634fb6 [2024-11-17 05:01:45,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 05:01:45,479 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 05:01:45,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 05:01:45,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 05:01:45,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 05:01:45,489 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 05:01:45" (1/1) ... [2024-11-17 05:01:45,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58bd0d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:45, skipping insertion in model container [2024-11-17 05:01:45,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 05:01:45" (1/1) ... [2024-11-17 05:01:45,512 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 05:01:45,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 05:01:45,729 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 05:01:45,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 05:01:45,766 INFO L204 MainTranslator]: Completed translation [2024-11-17 05:01:45,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:45 WrapperNode [2024-11-17 05:01:45,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 05:01:45,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 05:01:45,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 05:01:45,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 05:01:45,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:45" (1/1) ... [2024-11-17 05:01:45,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:45" (1/1) ... [2024-11-17 05:01:45,803 INFO L138 Inliner]: procedures = 16, calls = 79, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 127 [2024-11-17 05:01:45,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 05:01:45,805 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 05:01:45,805 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 05:01:45,805 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 05:01:45,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:45" (1/1) ... [2024-11-17 05:01:45,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:45" (1/1) ... [2024-11-17 05:01:45,818 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:45" (1/1) ... [2024-11-17 05:01:45,864 INFO L175 MemorySlicer]: Split 56 memory accesses to 6 slices as follows [2, 36, 6, 5, 3, 4]. 64 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 0, 6, 0, 0, 0]. The 7 writes are split as follows [0, 2, 0, 2, 1, 2]. [2024-11-17 05:01:45,864 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:45" (1/1) ... [2024-11-17 05:01:45,864 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:45" (1/1) ... [2024-11-17 05:01:45,871 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:45" (1/1) ... [2024-11-17 05:01:45,871 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:45" (1/1) ... [2024-11-17 05:01:45,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:45" (1/1) ... [2024-11-17 05:01:45,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:45" (1/1) ... [2024-11-17 05:01:45,878 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 05:01:45,879 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 05:01:45,879 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 05:01:45,879 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 05:01:45,880 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:45" (1/1) ... [2024-11-17 05:01:45,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 05:01:45,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:45,941 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) [2024-11-17 05:01:45,956 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 [2024-11-17 05:01:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 05:01:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_33_0 [2024-11-17 05:01:46,005 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_33_0 [2024-11-17 05:01:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 05:01:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 05:01:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 05:01:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 05:01:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-17 05:01:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-17 05:01:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 05:01:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 05:01:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 05:01:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 05:01:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 05:01:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-17 05:01:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-17 05:01:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 05:01:46,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 05:01:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 05:01:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 05:01:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 05:01:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 05:01:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-17 05:01:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-17 05:01:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-17 05:01:46,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-17 05:01:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 05:01:46,139 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 05:01:46,141 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 05:01:47,232 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L73: call ULTIMATE.dealloc(main_~#k~0#1.base, main_~#k~0#1.offset);havoc main_~#k~0#1.base, main_~#k~0#1.offset;call ULTIMATE.dealloc(main_~#y~0#1.base, main_~#y~0#1.offset);havoc main_~#y~0#1.base, main_~#y~0#1.offset;call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset;call ULTIMATE.dealloc(main_~#c~0#1.base, main_~#c~0#1.offset);havoc main_~#c~0#1.base, main_~#c~0#1.offset; [2024-11-17 05:01:47,273 INFO L? ?]: Removed 367 outVars from TransFormulas that were not future-live. [2024-11-17 05:01:47,273 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 05:01:47,290 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 05:01:47,291 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 05:01:47,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 05:01:47 BoogieIcfgContainer [2024-11-17 05:01:47,291 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 05:01:47,293 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 05:01:47,293 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 05:01:47,296 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 05:01:47,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 05:01:45" (1/3) ... [2024-11-17 05:01:47,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e22721e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 05:01:47, skipping insertion in model container [2024-11-17 05:01:47,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:01:45" (2/3) ... [2024-11-17 05:01:47,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e22721e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 05:01:47, skipping insertion in model container [2024-11-17 05:01:47,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 05:01:47" (3/3) ... [2024-11-17 05:01:47,299 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps5.c [2024-11-17 05:01:47,315 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 05:01:47,315 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2024-11-17 05:01:47,383 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 05:01:47,390 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;@22181b8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 05:01:47,390 INFO L334 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2024-11-17 05:01:47,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 134 states have (on average 1.6492537313432836) internal successors, (221), 219 states have internal predecessors, (221), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-17 05:01:47,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-17 05:01:47,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:47,400 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 05:01:47,401 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_25_to_33_0Err45ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:01:47,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:47,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1135451895, now seen corresponding path program 1 times [2024-11-17 05:01:47,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:47,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047006994] [2024-11-17 05:01:47,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:47,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:01:47,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:47,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047006994] [2024-11-17 05:01:47,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047006994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:47,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:47,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:01:47,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531772668] [2024-11-17 05:01:47,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:47,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:01:47,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:47,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:01:47,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:01:47,932 INFO L87 Difference]: Start difference. First operand has 226 states, 134 states have (on average 1.6492537313432836) internal successors, (221), 219 states have internal predecessors, (221), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 05:01:48,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:48,569 INFO L93 Difference]: Finished difference Result 625 states and 655 transitions. [2024-11-17 05:01:48,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:01:48,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-17 05:01:48,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:48,580 INFO L225 Difference]: With dead ends: 625 [2024-11-17 05:01:48,581 INFO L226 Difference]: Without dead ends: 396 [2024-11-17 05:01:48,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:01:48,587 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 321 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:48,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 879 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-17 05:01:48,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-17 05:01:48,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 273. [2024-11-17 05:01:48,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 181 states have (on average 1.6022099447513811) internal successors, (290), 265 states have internal predecessors, (290), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:48,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 301 transitions. [2024-11-17 05:01:48,654 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 301 transitions. Word has length 6 [2024-11-17 05:01:48,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:48,655 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 301 transitions. [2024-11-17 05:01:48,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 05:01:48,656 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 301 transitions. [2024-11-17 05:01:48,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-17 05:01:48,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:48,657 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:48,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 05:01:48,658 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_25_to_33_0Err35ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:01:48,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:48,659 INFO L85 PathProgramCache]: Analyzing trace with hash 448697727, now seen corresponding path program 1 times [2024-11-17 05:01:48,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:48,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710462030] [2024-11-17 05:01:48,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:48,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:48,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:01:48,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:48,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710462030] [2024-11-17 05:01:48,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710462030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:48,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:48,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:01:48,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976066287] [2024-11-17 05:01:48,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:48,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:01:48,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:48,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:01:48,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:01:48,896 INFO L87 Difference]: Start difference. First operand 273 states and 301 transitions. Second operand has 6 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-11-17 05:01:49,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:49,266 INFO L93 Difference]: Finished difference Result 396 states and 401 transitions. [2024-11-17 05:01:49,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:01:49,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 21 [2024-11-17 05:01:49,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:49,269 INFO L225 Difference]: With dead ends: 396 [2024-11-17 05:01:49,269 INFO L226 Difference]: Without dead ends: 388 [2024-11-17 05:01:49,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:01:49,271 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 267 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:49,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 849 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:01:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-17 05:01:49,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 273. [2024-11-17 05:01:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 181 states have (on average 1.558011049723757) internal successors, (282), 265 states have internal predecessors, (282), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:49,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 293 transitions. [2024-11-17 05:01:49,313 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 293 transitions. Word has length 21 [2024-11-17 05:01:49,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:49,313 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 293 transitions. [2024-11-17 05:01:49,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-11-17 05:01:49,313 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 293 transitions. [2024-11-17 05:01:49,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-17 05:01:49,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:49,314 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:49,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 05:01:49,315 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_25_to_33_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:01:49,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:49,318 INFO L85 PathProgramCache]: Analyzing trace with hash -399616077, now seen corresponding path program 1 times [2024-11-17 05:01:49,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:49,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553080133] [2024-11-17 05:01:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:49,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:49,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502051119] [2024-11-17 05:01:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:49,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:49,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:49,366 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) [2024-11-17 05:01:49,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 05:01:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:49,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-17 05:01:49,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:49,507 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 [2024-11-17 05:01:49,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:01:49,727 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:49,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:49,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553080133] [2024-11-17 05:01:49,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:49,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502051119] [2024-11-17 05:01:49,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502051119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:49,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:49,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 05:01:49,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858810067] [2024-11-17 05:01:49,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:49,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 05:01:49,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:49,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 05:01:49,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:01:49,730 INFO L87 Difference]: Start difference. First operand 273 states and 293 transitions. Second operand has 8 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 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) [2024-11-17 05:01:50,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:50,297 INFO L93 Difference]: Finished difference Result 388 states and 393 transitions. [2024-11-17 05:01:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:01:50,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 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 32 [2024-11-17 05:01:50,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:50,299 INFO L225 Difference]: With dead ends: 388 [2024-11-17 05:01:50,300 INFO L226 Difference]: Without dead ends: 387 [2024-11-17 05:01:50,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-17 05:01:50,301 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 354 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:50,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 842 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-17 05:01:50,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-17 05:01:50,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 273. [2024-11-17 05:01:50,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 181 states have (on average 1.5524861878453038) internal successors, (281), 265 states have internal predecessors, (281), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:50,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 292 transitions. [2024-11-17 05:01:50,328 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 292 transitions. Word has length 32 [2024-11-17 05:01:50,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:50,328 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 292 transitions. [2024-11-17 05:01:50,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 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) [2024-11-17 05:01:50,329 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 292 transitions. [2024-11-17 05:01:50,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-17 05:01:50,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:50,329 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:50,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 05:01:50,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:50,531 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_25_to_33_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:01:50,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:50,531 INFO L85 PathProgramCache]: Analyzing trace with hash 496803541, now seen corresponding path program 1 times [2024-11-17 05:01:50,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:50,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595445589] [2024-11-17 05:01:50,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:50,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:50,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035668293] [2024-11-17 05:01:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:50,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:50,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:50,555 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) [2024-11-17 05:01:50,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 05:01:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:50,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-17 05:01:50,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:50,660 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 [2024-11-17 05:01:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:01:50,814 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:50,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:50,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595445589] [2024-11-17 05:01:50,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:50,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035668293] [2024-11-17 05:01:50,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035668293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:50,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:50,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:01:50,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597469507] [2024-11-17 05:01:50,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:50,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:01:50,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:50,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:01:50,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:01:50,821 INFO L87 Difference]: Start difference. First operand 273 states and 292 transitions. Second operand has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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) [2024-11-17 05:01:51,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:51,259 INFO L93 Difference]: Finished difference Result 387 states and 392 transitions. [2024-11-17 05:01:51,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:01:51,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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 33 [2024-11-17 05:01:51,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:51,261 INFO L225 Difference]: With dead ends: 387 [2024-11-17 05:01:51,261 INFO L226 Difference]: Without dead ends: 386 [2024-11-17 05:01:51,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:01:51,263 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 242 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:51,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1027 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 05:01:51,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-17 05:01:51,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 273. [2024-11-17 05:01:51,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 181 states have (on average 1.5469613259668509) internal successors, (280), 265 states have internal predecessors, (280), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 291 transitions. [2024-11-17 05:01:51,281 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 291 transitions. Word has length 33 [2024-11-17 05:01:51,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:51,282 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 291 transitions. [2024-11-17 05:01:51,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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) [2024-11-17 05:01:51,283 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 291 transitions. [2024-11-17 05:01:51,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-17 05:01:51,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:51,284 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:51,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 05:01:51,484 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,SelfDestructingSolverStorable3 [2024-11-17 05:01:51,485 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_25_to_33_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:01:51,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash 686834291, now seen corresponding path program 1 times [2024-11-17 05:01:51,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:51,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788864194] [2024-11-17 05:01:51,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:51,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:51,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:01:51,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:51,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788864194] [2024-11-17 05:01:51,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788864194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:51,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:51,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:01:51,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313782534] [2024-11-17 05:01:51,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:51,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:01:51,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:51,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:01:51,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:01:51,684 INFO L87 Difference]: Start difference. First operand 273 states and 291 transitions. Second operand has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-11-17 05:01:51,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:51,918 INFO L93 Difference]: Finished difference Result 386 states and 391 transitions. [2024-11-17 05:01:51,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:01:51,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 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 35 [2024-11-17 05:01:51,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:51,920 INFO L225 Difference]: With dead ends: 386 [2024-11-17 05:01:51,920 INFO L226 Difference]: Without dead ends: 380 [2024-11-17 05:01:51,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:01:51,922 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 217 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:51,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 865 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:01:51,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-17 05:01:51,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 273. [2024-11-17 05:01:51,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 181 states have (on average 1.5138121546961325) internal successors, (274), 265 states have internal predecessors, (274), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 285 transitions. [2024-11-17 05:01:51,932 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 285 transitions. Word has length 35 [2024-11-17 05:01:51,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:51,932 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 285 transitions. [2024-11-17 05:01:51,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-11-17 05:01:51,932 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 285 transitions. [2024-11-17 05:01:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-17 05:01:51,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:51,933 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:51,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 05:01:51,934 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_25_to_33_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:01:51,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:51,934 INFO L85 PathProgramCache]: Analyzing trace with hash -352809780, now seen corresponding path program 1 times [2024-11-17 05:01:51,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:51,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966366938] [2024-11-17 05:01:51,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:51,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:01:51,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1306047634] [2024-11-17 05:01:51,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:51,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:51,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:01:51,958 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) [2024-11-17 05:01:51,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 05:01:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:52,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 05:01:52,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:01:52,085 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 [2024-11-17 05:01:52,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:01:52,276 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:01:52,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:52,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966366938] [2024-11-17 05:01:52,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:01:52,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306047634] [2024-11-17 05:01:52,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306047634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:52,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:52,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 05:01:52,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165877298] [2024-11-17 05:01:52,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:52,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 05:01:52,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:52,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 05:01:52,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:01:52,280 INFO L87 Difference]: Start difference. First operand 273 states and 285 transitions. Second operand has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2024-11-17 05:01:52,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:52,715 INFO L93 Difference]: Finished difference Result 380 states and 385 transitions. [2024-11-17 05:01:52,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:01:52,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 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 43 [2024-11-17 05:01:52,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:52,717 INFO L225 Difference]: With dead ends: 380 [2024-11-17 05:01:52,717 INFO L226 Difference]: Without dead ends: 378 [2024-11-17 05:01:52,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-17 05:01:52,718 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 214 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:52,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1026 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 05:01:52,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-11-17 05:01:52,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 273. [2024-11-17 05:01:52,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 181 states have (on average 1.5027624309392265) internal successors, (272), 265 states have internal predecessors, (272), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:52,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 283 transitions. [2024-11-17 05:01:52,727 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 283 transitions. Word has length 43 [2024-11-17 05:01:52,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:52,727 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 283 transitions. [2024-11-17 05:01:52,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2024-11-17 05:01:52,728 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 283 transitions. [2024-11-17 05:01:52,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-17 05:01:52,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:52,728 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:52,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 05:01:52,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:01:52,930 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_25_to_33_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:01:52,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:52,930 INFO L85 PathProgramCache]: Analyzing trace with hash -771161849, now seen corresponding path program 1 times [2024-11-17 05:01:52,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:52,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461234618] [2024-11-17 05:01:52,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:52,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:01:53,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:53,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461234618] [2024-11-17 05:01:53,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461234618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:53,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:53,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:01:53,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300986467] [2024-11-17 05:01:53,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:53,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:01:53,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:53,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:01:53,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:01:53,126 INFO L87 Difference]: Start difference. First operand 273 states and 283 transitions. Second operand has 6 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-11-17 05:01:53,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:53,235 INFO L93 Difference]: Finished difference Result 378 states and 382 transitions. [2024-11-17 05:01:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:01:53,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 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 46 [2024-11-17 05:01:53,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:53,237 INFO L225 Difference]: With dead ends: 378 [2024-11-17 05:01:53,237 INFO L226 Difference]: Without dead ends: 376 [2024-11-17 05:01:53,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:01:53,238 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 206 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:53,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1031 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:01:53,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-17 05:01:53,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 273. [2024-11-17 05:01:53,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 181 states have (on average 1.4917127071823204) internal successors, (270), 265 states have internal predecessors, (270), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:53,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 281 transitions. [2024-11-17 05:01:53,248 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 281 transitions. Word has length 46 [2024-11-17 05:01:53,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:53,249 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 281 transitions. [2024-11-17 05:01:53,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-11-17 05:01:53,249 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 281 transitions. [2024-11-17 05:01:53,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-17 05:01:53,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:53,252 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:53,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 05:01:53,252 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_25_to_33_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:01:53,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:53,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1942805829, now seen corresponding path program 1 times [2024-11-17 05:01:53,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:53,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297615402] [2024-11-17 05:01:53,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:53,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:01:53,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:53,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297615402] [2024-11-17 05:01:53,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297615402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:53,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:53,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:01:53,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672652427] [2024-11-17 05:01:53,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:53,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:01:53,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:53,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:01:53,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:01:53,546 INFO L87 Difference]: Start difference. First operand 273 states and 281 transitions. Second operand has 7 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 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) [2024-11-17 05:01:55,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:55,620 INFO L93 Difference]: Finished difference Result 376 states and 380 transitions. [2024-11-17 05:01:55,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:01:55,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 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 48 [2024-11-17 05:01:55,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:55,622 INFO L225 Difference]: With dead ends: 376 [2024-11-17 05:01:55,622 INFO L226 Difference]: Without dead ends: 375 [2024-11-17 05:01:55,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:01:55,623 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 202 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:55,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1098 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-17 05:01:55,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-17 05:01:55,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 273. [2024-11-17 05:01:55,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 181 states have (on average 1.4861878453038675) internal successors, (269), 265 states have internal predecessors, (269), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 280 transitions. [2024-11-17 05:01:55,631 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 280 transitions. Word has length 48 [2024-11-17 05:01:55,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:55,631 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 280 transitions. [2024-11-17 05:01:55,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 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) [2024-11-17 05:01:55,632 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 280 transitions. [2024-11-17 05:01:55,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-17 05:01:55,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:55,633 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:55,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 05:01:55,633 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_25_to_33_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:01:55,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:55,633 INFO L85 PathProgramCache]: Analyzing trace with hash 97438567, now seen corresponding path program 1 times [2024-11-17 05:01:55,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:55,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55691078] [2024-11-17 05:01:55,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:55,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:01:55,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:55,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55691078] [2024-11-17 05:01:55,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55691078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:55,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:55,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:01:55,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365698936] [2024-11-17 05:01:55,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:55,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:01:55,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:55,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:01:55,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:01:55,874 INFO L87 Difference]: Start difference. First operand 273 states and 280 transitions. Second operand has 7 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 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) [2024-11-17 05:01:57,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:57,147 INFO L93 Difference]: Finished difference Result 375 states and 379 transitions. [2024-11-17 05:01:57,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:01:57,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 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 49 [2024-11-17 05:01:57,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:57,149 INFO L225 Difference]: With dead ends: 375 [2024-11-17 05:01:57,149 INFO L226 Difference]: Without dead ends: 374 [2024-11-17 05:01:57,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:01:57,150 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 199 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:57,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1102 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-17 05:01:57,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-11-17 05:01:57,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 273. [2024-11-17 05:01:57,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 181 states have (on average 1.4806629834254144) internal successors, (268), 265 states have internal predecessors, (268), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:57,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 279 transitions. [2024-11-17 05:01:57,159 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 279 transitions. Word has length 49 [2024-11-17 05:01:57,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:57,160 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 279 transitions. [2024-11-17 05:01:57,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 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) [2024-11-17 05:01:57,160 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 279 transitions. [2024-11-17 05:01:57,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-17 05:01:57,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:57,161 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:57,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 05:01:57,161 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_25_to_33_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:01:57,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:57,162 INFO L85 PathProgramCache]: Analyzing trace with hash -850817275, now seen corresponding path program 1 times [2024-11-17 05:01:57,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:57,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570055463] [2024-11-17 05:01:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:57,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:01:57,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:57,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570055463] [2024-11-17 05:01:57,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570055463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:57,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:57,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:01:57,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377488469] [2024-11-17 05:01:57,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:57,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:01:57,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:57,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:01:57,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:01:57,372 INFO L87 Difference]: Start difference. First operand 273 states and 279 transitions. Second operand has 7 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-11-17 05:01:58,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:58,412 INFO L93 Difference]: Finished difference Result 374 states and 379 transitions. [2024-11-17 05:01:58,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:01:58,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 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 51 [2024-11-17 05:01:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:58,414 INFO L225 Difference]: With dead ends: 374 [2024-11-17 05:01:58,414 INFO L226 Difference]: Without dead ends: 373 [2024-11-17 05:01:58,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:01:58,415 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 172 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:58,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 856 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-17 05:01:58,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-17 05:01:58,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 273. [2024-11-17 05:01:58,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 181 states have (on average 1.4751381215469612) internal successors, (267), 265 states have internal predecessors, (267), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:58,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 278 transitions. [2024-11-17 05:01:58,429 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 278 transitions. Word has length 51 [2024-11-17 05:01:58,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:58,429 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 278 transitions. [2024-11-17 05:01:58,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-11-17 05:01:58,430 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 278 transitions. [2024-11-17 05:01:58,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-17 05:01:58,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:58,431 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:58,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 05:01:58,431 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_25_to_33_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:01:58,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:58,432 INFO L85 PathProgramCache]: Analyzing trace with hash -605531742, now seen corresponding path program 1 times [2024-11-17 05:01:58,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:58,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042590274] [2024-11-17 05:01:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:58,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:01:58,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:58,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042590274] [2024-11-17 05:01:58,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042590274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:58,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:58,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:01:58,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105755806] [2024-11-17 05:01:58,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:58,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:01:58,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:58,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:01:58,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:01:58,644 INFO L87 Difference]: Start difference. First operand 273 states and 278 transitions. Second operand has 7 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 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) [2024-11-17 05:01:59,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:59,634 INFO L93 Difference]: Finished difference Result 373 states and 378 transitions. [2024-11-17 05:01:59,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:01:59,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 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 52 [2024-11-17 05:01:59,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:01:59,636 INFO L225 Difference]: With dead ends: 373 [2024-11-17 05:01:59,636 INFO L226 Difference]: Without dead ends: 372 [2024-11-17 05:01:59,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:01:59,637 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 166 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-17 05:01:59,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 961 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-17 05:01:59,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-17 05:01:59,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 273. [2024-11-17 05:01:59,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 181 states have (on average 1.4696132596685083) internal successors, (266), 265 states have internal predecessors, (266), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:01:59,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 277 transitions. [2024-11-17 05:01:59,645 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 277 transitions. Word has length 52 [2024-11-17 05:01:59,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:01:59,645 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 277 transitions. [2024-11-17 05:01:59,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 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) [2024-11-17 05:01:59,645 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 277 transitions. [2024-11-17 05:01:59,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-17 05:01:59,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:01:59,646 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:01:59,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 05:01:59,646 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_25_to_33_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:01:59,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:01:59,646 INFO L85 PathProgramCache]: Analyzing trace with hash 730865173, now seen corresponding path program 1 times [2024-11-17 05:01:59,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:01:59,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868910689] [2024-11-17 05:01:59,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:01:59,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:01:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:59,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-17 05:01:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:01:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:01:59,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:01:59,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868910689] [2024-11-17 05:01:59,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868910689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:01:59,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:01:59,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:01:59,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558618416] [2024-11-17 05:01:59,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:01:59,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:01:59,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:01:59,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:01:59,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:01:59,903 INFO L87 Difference]: Start difference. First operand 273 states and 277 transitions. Second operand has 7 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 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) [2024-11-17 05:01:59,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:01:59,999 INFO L93 Difference]: Finished difference Result 371 states and 375 transitions. [2024-11-17 05:01:59,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:01:59,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 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 60 [2024-11-17 05:02:00,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:00,001 INFO L225 Difference]: With dead ends: 371 [2024-11-17 05:02:00,001 INFO L226 Difference]: Without dead ends: 370 [2024-11-17 05:02:00,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:02:00,002 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 155 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:00,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1257 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:02:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-17 05:02:00,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 274. [2024-11-17 05:02:00,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 182 states have (on average 1.467032967032967) internal successors, (267), 266 states have internal predecessors, (267), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:02:00,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 278 transitions. [2024-11-17 05:02:00,013 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 278 transitions. Word has length 60 [2024-11-17 05:02:00,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:00,013 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 278 transitions. [2024-11-17 05:02:00,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 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) [2024-11-17 05:02:00,014 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 278 transitions. [2024-11-17 05:02:00,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-17 05:02:00,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:00,015 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:00,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 05:02:00,016 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_25_to_33_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:00,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:00,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1181983880, now seen corresponding path program 1 times [2024-11-17 05:02:00,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:00,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681952060] [2024-11-17 05:02:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:00,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:00,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-17 05:02:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:00,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:00,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681952060] [2024-11-17 05:02:00,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681952060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:00,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:00,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:02:00,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888114401] [2024-11-17 05:02:00,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:00,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:02:00,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:02:00,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:00,209 INFO L87 Difference]: Start difference. First operand 274 states and 278 transitions. Second operand has 7 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-17 05:02:00,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:00,287 INFO L93 Difference]: Finished difference Result 370 states and 374 transitions. [2024-11-17 05:02:00,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:02:00,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 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 61 [2024-11-17 05:02:00,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:00,289 INFO L225 Difference]: With dead ends: 370 [2024-11-17 05:02:00,289 INFO L226 Difference]: Without dead ends: 369 [2024-11-17 05:02:00,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:02:00,290 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 152 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:00,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1102 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 05:02:00,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-11-17 05:02:00,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 275. [2024-11-17 05:02:00,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 183 states have (on average 1.46448087431694) internal successors, (268), 267 states have internal predecessors, (268), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 05:02:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 279 transitions. [2024-11-17 05:02:00,300 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 279 transitions. Word has length 61 [2024-11-17 05:02:00,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:00,300 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 279 transitions. [2024-11-17 05:02:00,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-17 05:02:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 279 transitions. [2024-11-17 05:02:00,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-17 05:02:00,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:00,302 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:00,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 05:02:00,302 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:00,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:00,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2016246044, now seen corresponding path program 1 times [2024-11-17 05:02:00,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:00,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902829312] [2024-11-17 05:02:00,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:00,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:00,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 05:02:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:00,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-17 05:02:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:00,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:00,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902829312] [2024-11-17 05:02:00,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902829312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:00,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:00,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:00,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651115457] [2024-11-17 05:02:00,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:00,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:00,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:00,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:00,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:00,554 INFO L87 Difference]: Start difference. First operand 275 states and 279 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:00,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:00,993 INFO L93 Difference]: Finished difference Result 366 states and 371 transitions. [2024-11-17 05:02:00,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:02:00,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2024-11-17 05:02:00,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:00,997 INFO L225 Difference]: With dead ends: 366 [2024-11-17 05:02:00,997 INFO L226 Difference]: Without dead ends: 356 [2024-11-17 05:02:00,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:00,998 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 281 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:00,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 562 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 05:02:00,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-11-17 05:02:01,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 292. [2024-11-17 05:02:01,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 199 states have (on average 1.4271356783919598) internal successors, (284), 282 states have internal predecessors, (284), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-17 05:02:01,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 296 transitions. [2024-11-17 05:02:01,006 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 296 transitions. Word has length 63 [2024-11-17 05:02:01,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:01,006 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 296 transitions. [2024-11-17 05:02:01,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 296 transitions. [2024-11-17 05:02:01,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-17 05:02:01,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:01,007 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:01,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 05:02:01,007 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_25_to_33_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:01,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:01,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2015142406, now seen corresponding path program 1 times [2024-11-17 05:02:01,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:01,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341265647] [2024-11-17 05:02:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:01,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:01,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-17 05:02:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:01,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:01,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:01,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341265647] [2024-11-17 05:02:01,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341265647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:01,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:01,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:01,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31587194] [2024-11-17 05:02:01,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:01,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:01,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:01,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:01,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:01,171 INFO L87 Difference]: Start difference. First operand 292 states and 296 transitions. Second operand has 6 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-17 05:02:01,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:01,346 INFO L93 Difference]: Finished difference Result 362 states and 367 transitions. [2024-11-17 05:02:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:02:01,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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 63 [2024-11-17 05:02:01,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:01,348 INFO L225 Difference]: With dead ends: 362 [2024-11-17 05:02:01,348 INFO L226 Difference]: Without dead ends: 360 [2024-11-17 05:02:01,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:02:01,349 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 142 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:01,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 915 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:02:01,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-17 05:02:01,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 295. [2024-11-17 05:02:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 202 states have (on average 1.4207920792079207) internal successors, (287), 285 states have internal predecessors, (287), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-17 05:02:01,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 299 transitions. [2024-11-17 05:02:01,358 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 299 transitions. Word has length 63 [2024-11-17 05:02:01,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:01,358 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 299 transitions. [2024-11-17 05:02:01,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-17 05:02:01,359 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 299 transitions. [2024-11-17 05:02:01,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-17 05:02:01,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:01,359 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:01,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 05:02:01,360 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_25_to_33_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:01,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:01,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1945454320, now seen corresponding path program 1 times [2024-11-17 05:02:01,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:01,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617437228] [2024-11-17 05:02:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:01,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:01,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958969447] [2024-11-17 05:02:01,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:01,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:01,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:01,390 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) [2024-11-17 05:02:01,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 05:02:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:01,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-17 05:02:01,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:01,504 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 [2024-11-17 05:02:01,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-17 05:02:01,664 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 [2024-11-17 05:02:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:01,677 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:01,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:01,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617437228] [2024-11-17 05:02:01,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:01,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958969447] [2024-11-17 05:02:01,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958969447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:01,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:01,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 05:02:01,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360717583] [2024-11-17 05:02:01,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:01,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 05:02:01,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:01,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 05:02:01,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:02:01,679 INFO L87 Difference]: Start difference. First operand 295 states and 299 transitions. Second operand has 8 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-17 05:02:02,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:02,026 INFO L93 Difference]: Finished difference Result 361 states and 367 transitions. [2024-11-17 05:02:02,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 05:02:02,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 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 66 [2024-11-17 05:02:02,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:02,029 INFO L225 Difference]: With dead ends: 361 [2024-11-17 05:02:02,029 INFO L226 Difference]: Without dead ends: 359 [2024-11-17 05:02:02,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-17 05:02:02,030 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 359 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:02,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 722 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:02:02,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-11-17 05:02:02,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 293. [2024-11-17 05:02:02,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 202 states have (on average 1.4108910891089108) internal successors, (285), 283 states have internal predecessors, (285), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-17 05:02:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 297 transitions. [2024-11-17 05:02:02,039 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 297 transitions. Word has length 66 [2024-11-17 05:02:02,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:02,039 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 297 transitions. [2024-11-17 05:02:02,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-17 05:02:02,040 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 297 transitions. [2024-11-17 05:02:02,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-17 05:02:02,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:02,040 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:02,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 05:02:02,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-17 05:02:02,245 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_25_to_33_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:02,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:02,245 INFO L85 PathProgramCache]: Analyzing trace with hash -179541789, now seen corresponding path program 1 times [2024-11-17 05:02:02,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:02,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776648025] [2024-11-17 05:02:02,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:02,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:02,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536431239] [2024-11-17 05:02:02,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:02,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:02,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:02,271 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) [2024-11-17 05:02:02,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 05:02:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:02,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-17 05:02:02,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:02,385 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 [2024-11-17 05:02:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:02,532 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:02,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:02,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776648025] [2024-11-17 05:02:02,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:02,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536431239] [2024-11-17 05:02:02,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536431239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:02,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:02,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 05:02:02,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578300106] [2024-11-17 05:02:02,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:02,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 05:02:02,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:02,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 05:02:02,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:02:02,533 INFO L87 Difference]: Start difference. First operand 293 states and 297 transitions. Second operand has 8 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 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) [2024-11-17 05:02:02,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:02,876 INFO L93 Difference]: Finished difference Result 379 states and 388 transitions. [2024-11-17 05:02:02,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:02:02,876 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 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 67 [2024-11-17 05:02:02,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:02,878 INFO L225 Difference]: With dead ends: 379 [2024-11-17 05:02:02,878 INFO L226 Difference]: Without dead ends: 378 [2024-11-17 05:02:02,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:02:02,879 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 151 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:02,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1038 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:02:02,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-11-17 05:02:02,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 334. [2024-11-17 05:02:02,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 241 states have (on average 1.4439834024896265) internal successors, (348), 323 states have internal predecessors, (348), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:02:02,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 362 transitions. [2024-11-17 05:02:02,888 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 362 transitions. Word has length 67 [2024-11-17 05:02:02,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:02,888 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 362 transitions. [2024-11-17 05:02:02,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 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) [2024-11-17 05:02:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 362 transitions. [2024-11-17 05:02:02,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-17 05:02:02,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:02,889 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:02,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 05:02:03,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-17 05:02:03,094 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_25_to_33_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:03,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:03,094 INFO L85 PathProgramCache]: Analyzing trace with hash -740967839, now seen corresponding path program 1 times [2024-11-17 05:02:03,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:03,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965570554] [2024-11-17 05:02:03,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:03,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:03,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045570147] [2024-11-17 05:02:03,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:03,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:03,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:03,123 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) [2024-11-17 05:02:03,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 05:02:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:03,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 05:02:03,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:03,247 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 [2024-11-17 05:02:03,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-17 05:02:03,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-17 05:02:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:03,461 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:03,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:03,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965570554] [2024-11-17 05:02:03,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:03,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045570147] [2024-11-17 05:02:03,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045570147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:03,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:03,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 05:02:03,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581501410] [2024-11-17 05:02:03,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:03,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 05:02:03,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:03,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 05:02:03,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:02:03,463 INFO L87 Difference]: Start difference. First operand 334 states and 362 transitions. Second operand has 9 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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) [2024-11-17 05:02:03,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:03,756 INFO L93 Difference]: Finished difference Result 366 states and 371 transitions. [2024-11-17 05:02:03,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 05:02:03,758 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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 69 [2024-11-17 05:02:03,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:03,760 INFO L225 Difference]: With dead ends: 366 [2024-11-17 05:02:03,760 INFO L226 Difference]: Without dead ends: 365 [2024-11-17 05:02:03,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-17 05:02:03,761 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 360 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:03,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 800 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:02:03,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-17 05:02:03,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 333. [2024-11-17 05:02:03,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 241 states have (on average 1.4398340248962656) internal successors, (347), 322 states have internal predecessors, (347), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:02:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 361 transitions. [2024-11-17 05:02:03,773 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 361 transitions. Word has length 69 [2024-11-17 05:02:03,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:03,773 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 361 transitions. [2024-11-17 05:02:03,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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) [2024-11-17 05:02:03,774 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 361 transitions. [2024-11-17 05:02:03,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-17 05:02:03,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:03,774 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:03,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 05:02:03,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-17 05:02:03,975 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_25_to_33_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:03,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:03,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1495166547, now seen corresponding path program 1 times [2024-11-17 05:02:03,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:03,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623219698] [2024-11-17 05:02:03,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:03,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:04,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417684487] [2024-11-17 05:02:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:04,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:04,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:04,002 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) [2024-11-17 05:02:04,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 05:02:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:04,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 05:02:04,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:04,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 05:02:04,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-17 05:02:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:04,302 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:04,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:04,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623219698] [2024-11-17 05:02:04,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:04,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417684487] [2024-11-17 05:02:04,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417684487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:04,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:04,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 05:02:04,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218685622] [2024-11-17 05:02:04,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:04,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 05:02:04,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:04,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 05:02:04,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:02:04,304 INFO L87 Difference]: Start difference. First operand 333 states and 361 transitions. Second operand has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 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) [2024-11-17 05:02:04,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:04,658 INFO L93 Difference]: Finished difference Result 378 states and 385 transitions. [2024-11-17 05:02:04,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 05:02:04,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 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 70 [2024-11-17 05:02:04,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:04,659 INFO L225 Difference]: With dead ends: 378 [2024-11-17 05:02:04,659 INFO L226 Difference]: Without dead ends: 377 [2024-11-17 05:02:04,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-17 05:02:04,660 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 157 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:04,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1322 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:02:04,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-17 05:02:04,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 336. [2024-11-17 05:02:04,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 244 states have (on average 1.4344262295081966) internal successors, (350), 325 states have internal predecessors, (350), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:02:04,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 364 transitions. [2024-11-17 05:02:04,669 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 364 transitions. Word has length 70 [2024-11-17 05:02:04,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:04,670 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 364 transitions. [2024-11-17 05:02:04,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 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) [2024-11-17 05:02:04,670 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 364 transitions. [2024-11-17 05:02:04,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-17 05:02:04,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:04,670 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:04,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 05:02:04,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:04,875 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_25_to_33_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:04,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:04,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1958991883, now seen corresponding path program 1 times [2024-11-17 05:02:04,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:04,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338100080] [2024-11-17 05:02:04,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:04,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:04,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534296214] [2024-11-17 05:02:04,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:04,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:04,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:04,899 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) [2024-11-17 05:02:04,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 05:02:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:05,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-17 05:02:05,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:05,018 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 [2024-11-17 05:02:05,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-17 05:02:05,216 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 36 treesize of output 16 [2024-11-17 05:02:05,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:05,237 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:05,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:05,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338100080] [2024-11-17 05:02:05,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:05,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534296214] [2024-11-17 05:02:05,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534296214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:05,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:05,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-17 05:02:05,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011389859] [2024-11-17 05:02:05,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:05,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 05:02:05,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:05,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 05:02:05,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:02:05,239 INFO L87 Difference]: Start difference. First operand 336 states and 364 transitions. Second operand has 10 states, 8 states have (on average 8.625) internal successors, (69), 9 states have internal predecessors, (69), 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) [2024-11-17 05:02:05,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:05,512 INFO L93 Difference]: Finished difference Result 368 states and 373 transitions. [2024-11-17 05:02:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 05:02:05,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.625) internal successors, (69), 9 states have internal predecessors, (69), 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 72 [2024-11-17 05:02:05,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:05,514 INFO L225 Difference]: With dead ends: 368 [2024-11-17 05:02:05,514 INFO L226 Difference]: Without dead ends: 367 [2024-11-17 05:02:05,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-17 05:02:05,515 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 401 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:05,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 957 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:02:05,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-17 05:02:05,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 335. [2024-11-17 05:02:05,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 244 states have (on average 1.430327868852459) internal successors, (349), 324 states have internal predecessors, (349), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:02:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 363 transitions. [2024-11-17 05:02:05,524 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 363 transitions. Word has length 72 [2024-11-17 05:02:05,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:05,524 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 363 transitions. [2024-11-17 05:02:05,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.625) internal successors, (69), 9 states have internal predecessors, (69), 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) [2024-11-17 05:02:05,524 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 363 transitions. [2024-11-17 05:02:05,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-17 05:02:05,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:05,525 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:05,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 05:02:05,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:05,726 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_25_to_33_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:05,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:05,726 INFO L85 PathProgramCache]: Analyzing trace with hash 599206206, now seen corresponding path program 1 times [2024-11-17 05:02:05,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:05,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930524318] [2024-11-17 05:02:05,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:05,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:05,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045970448] [2024-11-17 05:02:05,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:05,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:05,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:05,750 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) [2024-11-17 05:02:05,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 05:02:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:05,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-17 05:02:05,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:05,875 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 [2024-11-17 05:02:05,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-17 05:02:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:06,077 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:06,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:06,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930524318] [2024-11-17 05:02:06,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:06,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045970448] [2024-11-17 05:02:06,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045970448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:06,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:06,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-17 05:02:06,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767710961] [2024-11-17 05:02:06,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:06,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 05:02:06,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:06,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 05:02:06,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:02:06,079 INFO L87 Difference]: Start difference. First operand 335 states and 363 transitions. Second operand has 10 states, 8 states have (on average 8.75) internal successors, (70), 9 states have internal predecessors, (70), 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) [2024-11-17 05:02:06,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:06,489 INFO L93 Difference]: Finished difference Result 377 states and 382 transitions. [2024-11-17 05:02:06,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 05:02:06,490 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.75) internal successors, (70), 9 states have internal predecessors, (70), 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 73 [2024-11-17 05:02:06,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:06,492 INFO L225 Difference]: With dead ends: 377 [2024-11-17 05:02:06,492 INFO L226 Difference]: Without dead ends: 376 [2024-11-17 05:02:06,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-17 05:02:06,493 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 157 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:06,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1205 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 05:02:06,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-17 05:02:06,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 338. [2024-11-17 05:02:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 247 states have (on average 1.4251012145748987) internal successors, (352), 327 states have internal predecessors, (352), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:02:06,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 366 transitions. [2024-11-17 05:02:06,506 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 366 transitions. Word has length 73 [2024-11-17 05:02:06,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:06,506 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 366 transitions. [2024-11-17 05:02:06,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.75) internal successors, (70), 9 states have internal predecessors, (70), 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) [2024-11-17 05:02:06,506 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 366 transitions. [2024-11-17 05:02:06,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-17 05:02:06,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:06,507 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:06,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 05:02:06,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:06,708 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:06,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:06,708 INFO L85 PathProgramCache]: Analyzing trace with hash 311545532, now seen corresponding path program 1 times [2024-11-17 05:02:06,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:06,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645366045] [2024-11-17 05:02:06,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:06,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:06,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-17 05:02:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:06,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:06,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645366045] [2024-11-17 05:02:06,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645366045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:06,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:06,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:02:06,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557721197] [2024-11-17 05:02:06,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:06,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:02:06,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:06,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:02:06,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:06,937 INFO L87 Difference]: Start difference. First operand 338 states and 366 transitions. Second operand has 7 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-11-17 05:02:07,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:07,497 INFO L93 Difference]: Finished difference Result 362 states and 372 transitions. [2024-11-17 05:02:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:02:07,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 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 75 [2024-11-17 05:02:07,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:07,500 INFO L225 Difference]: With dead ends: 362 [2024-11-17 05:02:07,500 INFO L226 Difference]: Without dead ends: 361 [2024-11-17 05:02:07,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:02:07,501 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 140 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:07,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1076 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-17 05:02:07,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-11-17 05:02:07,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 340. [2024-11-17 05:02:07,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 249 states have (on average 1.4216867469879517) internal successors, (354), 329 states have internal predecessors, (354), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:02:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 368 transitions. [2024-11-17 05:02:07,512 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 368 transitions. Word has length 75 [2024-11-17 05:02:07,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:07,512 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 368 transitions. [2024-11-17 05:02:07,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-11-17 05:02:07,512 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 368 transitions. [2024-11-17 05:02:07,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-17 05:02:07,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:07,513 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:07,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-17 05:02:07,514 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:07,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:07,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1067976872, now seen corresponding path program 1 times [2024-11-17 05:02:07,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:07,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615784756] [2024-11-17 05:02:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:07,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:07,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-17 05:02:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:07,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:07,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:07,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615784756] [2024-11-17 05:02:07,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615784756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:07,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:07,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:02:07,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125581897] [2024-11-17 05:02:07,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:07,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:02:07,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:07,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:02:07,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:07,894 INFO L87 Difference]: Start difference. First operand 340 states and 368 transitions. Second operand has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-11-17 05:02:08,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:08,404 INFO L93 Difference]: Finished difference Result 361 states and 371 transitions. [2024-11-17 05:02:08,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:02:08,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 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 76 [2024-11-17 05:02:08,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:08,406 INFO L225 Difference]: With dead ends: 361 [2024-11-17 05:02:08,406 INFO L226 Difference]: Without dead ends: 360 [2024-11-17 05:02:08,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 05:02:08,407 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 134 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:08,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1215 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 05:02:08,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-17 05:02:08,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 341. [2024-11-17 05:02:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 250 states have (on average 1.42) internal successors, (355), 330 states have internal predecessors, (355), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:02:08,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 369 transitions. [2024-11-17 05:02:08,416 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 369 transitions. Word has length 76 [2024-11-17 05:02:08,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:08,416 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 369 transitions. [2024-11-17 05:02:08,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-11-17 05:02:08,416 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 369 transitions. [2024-11-17 05:02:08,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-17 05:02:08,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:08,417 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:08,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-17 05:02:08,417 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:08,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:08,418 INFO L85 PathProgramCache]: Analyzing trace with hash 368406801, now seen corresponding path program 1 times [2024-11-17 05:02:08,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:08,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621652590] [2024-11-17 05:02:08,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:08,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:08,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 05:02:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:08,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-17 05:02:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:08,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:08,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621652590] [2024-11-17 05:02:08,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621652590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:08,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:08,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 05:02:08,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743039480] [2024-11-17 05:02:08,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:08,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 05:02:08,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:08,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 05:02:08,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:02:08,606 INFO L87 Difference]: Start difference. First operand 341 states and 369 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:09,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:09,233 INFO L93 Difference]: Finished difference Result 371 states and 375 transitions. [2024-11-17 05:02:09,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:02:09,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 78 [2024-11-17 05:02:09,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:09,235 INFO L225 Difference]: With dead ends: 371 [2024-11-17 05:02:09,235 INFO L226 Difference]: Without dead ends: 370 [2024-11-17 05:02:09,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:02:09,235 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 200 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:09,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 860 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-17 05:02:09,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-17 05:02:09,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 341. [2024-11-17 05:02:09,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 250 states have (on average 1.416) internal successors, (354), 330 states have internal predecessors, (354), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:02:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 368 transitions. [2024-11-17 05:02:09,244 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 368 transitions. Word has length 78 [2024-11-17 05:02:09,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:09,245 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 368 transitions. [2024-11-17 05:02:09,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:09,245 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 368 transitions. [2024-11-17 05:02:09,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-17 05:02:09,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:09,246 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:09,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-17 05:02:09,246 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:09,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:09,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1464290897, now seen corresponding path program 1 times [2024-11-17 05:02:09,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:09,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072543058] [2024-11-17 05:02:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:09,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:09,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 05:02:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:09,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-17 05:02:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:09,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:09,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072543058] [2024-11-17 05:02:09,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072543058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:09,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:09,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 05:02:09,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053495691] [2024-11-17 05:02:09,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:09,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 05:02:09,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:09,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 05:02:09,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:02:09,456 INFO L87 Difference]: Start difference. First operand 341 states and 368 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:09,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:09,758 INFO L93 Difference]: Finished difference Result 370 states and 374 transitions. [2024-11-17 05:02:09,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:02:09,759 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 79 [2024-11-17 05:02:09,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:09,760 INFO L225 Difference]: With dead ends: 370 [2024-11-17 05:02:09,760 INFO L226 Difference]: Without dead ends: 369 [2024-11-17 05:02:09,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:02:09,761 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 288 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:09,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 682 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:02:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-11-17 05:02:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 341. [2024-11-17 05:02:09,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 250 states have (on average 1.412) internal successors, (353), 330 states have internal predecessors, (353), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:02:09,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 367 transitions. [2024-11-17 05:02:09,770 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 367 transitions. Word has length 79 [2024-11-17 05:02:09,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:09,770 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 367 transitions. [2024-11-17 05:02:09,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:09,770 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 367 transitions. [2024-11-17 05:02:09,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-17 05:02:09,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:09,771 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:09,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-17 05:02:09,771 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_25_to_33_0Err45ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:09,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:09,772 INFO L85 PathProgramCache]: Analyzing trace with hash 227458507, now seen corresponding path program 1 times [2024-11-17 05:02:09,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:09,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058122944] [2024-11-17 05:02:09,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:09,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:10,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-17 05:02:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:10,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:10,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058122944] [2024-11-17 05:02:10,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058122944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:02:10,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009590833] [2024-11-17 05:02:10,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:10,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:10,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:10,105 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) [2024-11-17 05:02:10,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 05:02:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:10,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-17 05:02:10,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:10,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 15 [2024-11-17 05:02:10,468 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 [2024-11-17 05:02:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:10,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:02:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:10,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009590833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 05:02:10,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 05:02:10,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2024-11-17 05:02:10,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328808382] [2024-11-17 05:02:10,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 05:02:10,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-17 05:02:10,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:10,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-17 05:02:10,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-17 05:02:10,694 INFO L87 Difference]: Start difference. First operand 341 states and 367 transitions. Second operand has 21 states, 19 states have (on average 11.789473684210526) internal successors, (224), 17 states have internal predecessors, (224), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 05:02:11,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:11,716 INFO L93 Difference]: Finished difference Result 373 states and 381 transitions. [2024-11-17 05:02:11,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 05:02:11,717 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 11.789473684210526) internal successors, (224), 17 states have internal predecessors, (224), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 81 [2024-11-17 05:02:11,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:11,718 INFO L225 Difference]: With dead ends: 373 [2024-11-17 05:02:11,718 INFO L226 Difference]: Without dead ends: 372 [2024-11-17 05:02:11,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 151 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2024-11-17 05:02:11,719 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 891 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:11,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1718 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-17 05:02:11,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-17 05:02:11,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 340. [2024-11-17 05:02:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 250 states have (on average 1.408) internal successors, (352), 329 states have internal predecessors, (352), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:02:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 366 transitions. [2024-11-17 05:02:11,731 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 366 transitions. Word has length 81 [2024-11-17 05:02:11,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:11,731 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 366 transitions. [2024-11-17 05:02:11,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 11.789473684210526) internal successors, (224), 17 states have internal predecessors, (224), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 05:02:11,732 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 366 transitions. [2024-11-17 05:02:11,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-17 05:02:11,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:11,732 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:11,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-17 05:02:11,933 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,SelfDestructingSolverStorable25 [2024-11-17 05:02:11,933 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:11,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:11,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1565726157, now seen corresponding path program 1 times [2024-11-17 05:02:11,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:11,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349693044] [2024-11-17 05:02:11,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:11,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:11,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339222503] [2024-11-17 05:02:11,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:11,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:11,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:11,955 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) [2024-11-17 05:02:11,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 05:02:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:12,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 05:02:12,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:12,080 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 [2024-11-17 05:02:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:12,190 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:12,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:12,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349693044] [2024-11-17 05:02:12,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:12,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339222503] [2024-11-17 05:02:12,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339222503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:12,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:12,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 05:02:12,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139998457] [2024-11-17 05:02:12,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:12,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 05:02:12,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:12,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 05:02:12,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 05:02:12,192 INFO L87 Difference]: Start difference. First operand 340 states and 366 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:12,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:12,507 INFO L93 Difference]: Finished difference Result 368 states and 372 transitions. [2024-11-17 05:02:12,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 05:02:12,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2024-11-17 05:02:12,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:12,508 INFO L225 Difference]: With dead ends: 368 [2024-11-17 05:02:12,508 INFO L226 Difference]: Without dead ends: 362 [2024-11-17 05:02:12,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:12,509 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 136 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:12,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 552 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:02:12,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-17 05:02:12,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 340. [2024-11-17 05:02:12,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 250 states have (on average 1.384) internal successors, (346), 329 states have internal predecessors, (346), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:02:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 360 transitions. [2024-11-17 05:02:12,518 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 360 transitions. Word has length 81 [2024-11-17 05:02:12,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:12,518 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 360 transitions. [2024-11-17 05:02:12,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:12,518 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 360 transitions. [2024-11-17 05:02:12,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-17 05:02:12,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:12,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:12,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-17 05:02:12,719 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,SelfDestructingSolverStorable26 [2024-11-17 05:02:12,720 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_25_to_33_0Err44ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:12,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:12,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1538720791, now seen corresponding path program 1 times [2024-11-17 05:02:12,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:12,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257911353] [2024-11-17 05:02:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:12,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:13,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-17 05:02:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:13,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:13,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257911353] [2024-11-17 05:02:13,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257911353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:02:13,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197438445] [2024-11-17 05:02:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:13,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:13,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:13,046 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) [2024-11-17 05:02:13,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 05:02:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:13,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-17 05:02:13,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:13,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-17 05:02:13,346 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 [2024-11-17 05:02:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:13,360 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:13,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197438445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:13,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 05:02:13,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2024-11-17 05:02:13,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897697476] [2024-11-17 05:02:13,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:13,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 05:02:13,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:13,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 05:02:13,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-17 05:02:13,362 INFO L87 Difference]: Start difference. First operand 340 states and 360 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:16,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 05:02:20,903 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] [2024-11-17 05:02:20,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:20,958 INFO L93 Difference]: Finished difference Result 344 states and 368 transitions. [2024-11-17 05:02:20,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-17 05:02:20,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2024-11-17 05:02:20,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:20,960 INFO L225 Difference]: With dead ends: 344 [2024-11-17 05:02:20,960 INFO L226 Difference]: Without dead ends: 342 [2024-11-17 05:02:20,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2024-11-17 05:02:20,961 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 386 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:20,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 815 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 555 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2024-11-17 05:02:20,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-17 05:02:20,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 338. [2024-11-17 05:02:20,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 250 states have (on average 1.376) internal successors, (344), 327 states have internal predecessors, (344), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:02:20,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 358 transitions. [2024-11-17 05:02:20,970 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 358 transitions. Word has length 82 [2024-11-17 05:02:20,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:20,971 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 358 transitions. [2024-11-17 05:02:20,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:20,971 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 358 transitions. [2024-11-17 05:02:20,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-17 05:02:20,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:20,971 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:20,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-17 05:02:21,174 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,SelfDestructingSolverStorable27 [2024-11-17 05:02:21,175 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_25_to_33_0Err43ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:21,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:21,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1241927673, now seen corresponding path program 1 times [2024-11-17 05:02:21,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:21,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941248254] [2024-11-17 05:02:21,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:21,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:21,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278513782] [2024-11-17 05:02:21,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:21,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:21,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:21,217 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) [2024-11-17 05:02:21,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 05:02:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:21,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-17 05:02:21,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:21,351 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 [2024-11-17 05:02:21,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-17 05:02:21,533 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 [2024-11-17 05:02:21,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:21,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:02:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:22,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:22,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941248254] [2024-11-17 05:02:22,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:22,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278513782] [2024-11-17 05:02:22,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278513782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 05:02:22,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 05:02:22,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-11-17 05:02:22,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582636327] [2024-11-17 05:02:22,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 05:02:22,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 05:02:22,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:22,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 05:02:22,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-17 05:02:22,050 INFO L87 Difference]: Start difference. First operand 338 states and 358 transitions. Second operand has 17 states, 14 states have (on average 11.285714285714286) internal successors, (158), 14 states have internal predecessors, (158), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:24,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-17 05:02:25,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:25,652 INFO L93 Difference]: Finished difference Result 364 states and 372 transitions. [2024-11-17 05:02:25,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-17 05:02:25,653 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 11.285714285714286) internal successors, (158), 14 states have internal predecessors, (158), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 84 [2024-11-17 05:02:25,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:25,654 INFO L225 Difference]: With dead ends: 364 [2024-11-17 05:02:25,654 INFO L226 Difference]: Without dead ends: 363 [2024-11-17 05:02:25,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 147 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2024-11-17 05:02:25,655 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 847 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:25,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1095 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 664 Invalid, 2 Unknown, 0 Unchecked, 3.4s Time] [2024-11-17 05:02:25,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-17 05:02:25,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2024-11-17 05:02:25,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 250 states have (on average 1.372) internal successors, (343), 326 states have internal predecessors, (343), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-17 05:02:25,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 357 transitions. [2024-11-17 05:02:25,665 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 357 transitions. Word has length 84 [2024-11-17 05:02:25,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:25,666 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 357 transitions. [2024-11-17 05:02:25,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 11.285714285714286) internal successors, (158), 14 states have internal predecessors, (158), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:25,666 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 357 transitions. [2024-11-17 05:02:25,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-17 05:02:25,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:25,667 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:25,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-17 05:02:25,867 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,SelfDestructingSolverStorable28 [2024-11-17 05:02:25,868 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_25_to_33_0Err42ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:25,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:25,869 INFO L85 PathProgramCache]: Analyzing trace with hash 154947880, now seen corresponding path program 1 times [2024-11-17 05:02:25,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:25,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491834557] [2024-11-17 05:02:25,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:25,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:25,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122704821] [2024-11-17 05:02:25,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:25,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:25,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:25,897 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:25,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 05:02:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:26,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-17 05:02:26,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:26,028 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 [2024-11-17 05:02:26,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-17 05:02:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:26,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:02:30,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:30,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491834557] [2024-11-17 05:02:30,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:30,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122704821] [2024-11-17 05:02:30,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122704821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:02:30,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-17 05:02:30,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-17 05:02:30,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934228607] [2024-11-17 05:02:30,751 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-17 05:02:30,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 05:02:30,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:30,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 05:02:30,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2024-11-17 05:02:30,752 INFO L87 Difference]: Start difference. First operand 337 states and 357 transitions. Second operand has 11 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:31,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:31,493 INFO L93 Difference]: Finished difference Result 460 states and 466 transitions. [2024-11-17 05:02:31,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 05:02:31,494 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2024-11-17 05:02:31,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:31,495 INFO L225 Difference]: With dead ends: 460 [2024-11-17 05:02:31,495 INFO L226 Difference]: Without dead ends: 459 [2024-11-17 05:02:31,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=99, Invalid=362, Unknown=1, NotChecked=0, Total=462 [2024-11-17 05:02:31,496 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 439 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:31,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1248 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-17 05:02:31,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-17 05:02:31,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 395. [2024-11-17 05:02:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 304 states have (on average 1.4078947368421053) internal successors, (428), 381 states have internal predecessors, (428), 8 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-17 05:02:31,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 448 transitions. [2024-11-17 05:02:31,510 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 448 transitions. Word has length 85 [2024-11-17 05:02:31,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:31,511 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 448 transitions. [2024-11-17 05:02:31,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:31,511 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 448 transitions. [2024-11-17 05:02:31,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-17 05:02:31,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:31,512 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:31,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-17 05:02:31,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:31,713 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_25_to_33_0Err41ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:31,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:31,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1418940186, now seen corresponding path program 1 times [2024-11-17 05:02:31,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:31,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101720627] [2024-11-17 05:02:31,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:31,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:31,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [580206855] [2024-11-17 05:02:31,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:31,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:31,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:31,743 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:31,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-17 05:02:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:31,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-17 05:02:31,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:31,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:02:32,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-17 05:02:32,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-17 05:02:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:32,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:02:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:49,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:49,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101720627] [2024-11-17 05:02:49,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:49,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580206855] [2024-11-17 05:02:49,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580206855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 05:02:49,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 05:02:49,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2024-11-17 05:02:49,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778144347] [2024-11-17 05:02:49,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 05:02:49,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-17 05:02:49,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:49,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-17 05:02:49,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=305, Unknown=4, NotChecked=0, Total=380 [2024-11-17 05:02:49,215 INFO L87 Difference]: Start difference. First operand 395 states and 448 transitions. Second operand has 20 states, 17 states have (on average 9.705882352941176) internal successors, (165), 17 states have internal predecessors, (165), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:53,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:53,391 INFO L93 Difference]: Finished difference Result 419 states and 457 transitions. [2024-11-17 05:02:53,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-17 05:02:53,392 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 9.705882352941176) internal successors, (165), 17 states have internal predecessors, (165), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 87 [2024-11-17 05:02:53,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:53,394 INFO L225 Difference]: With dead ends: 419 [2024-11-17 05:02:53,394 INFO L226 Difference]: Without dead ends: 418 [2024-11-17 05:02:53,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 151 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=224, Invalid=702, Unknown=4, NotChecked=0, Total=930 [2024-11-17 05:02:53,395 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 727 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:53,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1870 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-17 05:02:53,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-17 05:02:53,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 396. [2024-11-17 05:02:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 305 states have (on average 1.4) internal successors, (427), 381 states have internal predecessors, (427), 8 states have call successors, (8), 5 states have call predecessors, (8), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-17 05:02:53,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 449 transitions. [2024-11-17 05:02:53,410 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 449 transitions. Word has length 87 [2024-11-17 05:02:53,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:53,410 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 449 transitions. [2024-11-17 05:02:53,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 9.705882352941176) internal successors, (165), 17 states have internal predecessors, (165), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:53,411 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 449 transitions. [2024-11-17 05:02:53,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-17 05:02:53,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:53,411 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:53,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-17 05:02:53,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:53,612 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_25_to_33_0Err40ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:53,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:53,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1037472732, now seen corresponding path program 1 times [2024-11-17 05:02:53,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:53,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079851105] [2024-11-17 05:02:53,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:53,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:53,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016584810] [2024-11-17 05:02:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:53,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:53,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:53,638 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:53,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-17 05:02:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:53,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-17 05:02:53,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:53,802 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 [2024-11-17 05:02:53,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-17 05:02:54,032 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:54,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 05:02:55,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:55,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079851105] [2024-11-17 05:02:55,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:55,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016584810] [2024-11-17 05:02:55,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016584810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 05:02:55,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-17 05:02:55,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-17 05:02:55,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518901394] [2024-11-17 05:02:55,031 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-17 05:02:55,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 05:02:55,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:55,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 05:02:55,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-17 05:02:55,032 INFO L87 Difference]: Start difference. First operand 396 states and 449 transitions. Second operand has 12 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:55,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:55,677 INFO L93 Difference]: Finished difference Result 459 states and 466 transitions. [2024-11-17 05:02:55,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 05:02:55,678 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2024-11-17 05:02:55,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:55,679 INFO L225 Difference]: With dead ends: 459 [2024-11-17 05:02:55,680 INFO L226 Difference]: Without dead ends: 458 [2024-11-17 05:02:55,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2024-11-17 05:02:55,680 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 475 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:55,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1261 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-17 05:02:55,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-11-17 05:02:55,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 396. [2024-11-17 05:02:55,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 305 states have (on average 1.3967213114754098) internal successors, (426), 381 states have internal predecessors, (426), 8 states have call successors, (8), 5 states have call predecessors, (8), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-17 05:02:55,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 448 transitions. [2024-11-17 05:02:55,693 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 448 transitions. Word has length 88 [2024-11-17 05:02:55,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:55,694 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 448 transitions. [2024-11-17 05:02:55,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:02:55,694 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 448 transitions. [2024-11-17 05:02:55,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-17 05:02:55,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:55,695 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:55,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-17 05:02:55,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:55,899 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:55,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:55,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1979261478, now seen corresponding path program 1 times [2024-11-17 05:02:55,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:55,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389443241] [2024-11-17 05:02:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:55,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:55,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848097937] [2024-11-17 05:02:55,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:55,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:55,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:55,946 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:55,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-17 05:02:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:56,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 05:02:56,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:56,075 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 [2024-11-17 05:02:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:56,219 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:02:56,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:02:56,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389443241] [2024-11-17 05:02:56,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:02:56,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848097937] [2024-11-17 05:02:56,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848097937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:02:56,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:02:56,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 05:02:56,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757267596] [2024-11-17 05:02:56,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:02:56,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 05:02:56,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:02:56,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 05:02:56,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 05:02:56,220 INFO L87 Difference]: Start difference. First operand 396 states and 448 transitions. Second operand has 6 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:56,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:02:56,502 INFO L93 Difference]: Finished difference Result 418 states and 454 transitions. [2024-11-17 05:02:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 05:02:56,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 89 [2024-11-17 05:02:56,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:02:56,504 INFO L225 Difference]: With dead ends: 418 [2024-11-17 05:02:56,504 INFO L226 Difference]: Without dead ends: 416 [2024-11-17 05:02:56,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:02:56,505 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 145 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:02:56,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 569 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:02:56,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-17 05:02:56,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 396. [2024-11-17 05:02:56,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 305 states have (on average 1.3901639344262295) internal successors, (424), 381 states have internal predecessors, (424), 8 states have call successors, (8), 5 states have call predecessors, (8), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-17 05:02:56,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 446 transitions. [2024-11-17 05:02:56,516 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 446 transitions. Word has length 89 [2024-11-17 05:02:56,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:02:56,516 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 446 transitions. [2024-11-17 05:02:56,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 05:02:56,516 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 446 transitions. [2024-11-17 05:02:56,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-17 05:02:56,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:02:56,517 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:02:56,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-17 05:02:56,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:56,718 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_25_to_33_0Err39ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-11-17 05:02:56,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:02:56,718 INFO L85 PathProgramCache]: Analyzing trace with hash -578880446, now seen corresponding path program 1 times [2024-11-17 05:02:56,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:02:56,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134169522] [2024-11-17 05:02:56,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:56,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:02:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:02:56,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [866329875] [2024-11-17 05:02:56,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:02:56,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:02:56,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:02:56,745 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:02:56,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-17 05:02:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:02:56,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-17 05:02:56,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:02:56,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:02:56,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-17 05:02:57,100 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 36 treesize of output 16 [2024-11-17 05:02:57,123 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:02:57,123 INFO L311 TraceCheckSpWp]: Computing backward predicates...