./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_dijkstra.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_dijkstra.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 4a9aad6636e75eb788a44e63e1649ee5df89ecae877c31a886978a8e3fdd2e8f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 23:07:23,897 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 23:07:23,968 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-22 23:07:23,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 23:07:23,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 23:07:23,999 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 23:07:24,000 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 23:07:24,000 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 23:07:24,001 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 23:07:24,002 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 23:07:24,003 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 23:07:24,003 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 23:07:24,003 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 23:07:24,005 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 23:07:24,005 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 23:07:24,005 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 23:07:24,006 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 23:07:24,006 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 23:07:24,006 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 23:07:24,006 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 23:07:24,006 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 23:07:24,007 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 23:07:24,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 23:07:24,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 23:07:24,008 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 23:07:24,008 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-22 23:07:24,008 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 23:07:24,008 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 23:07:24,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 23:07:24,008 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 23:07:24,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 23:07:24,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 23:07:24,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 23:07:24,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 23:07:24,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:07:24,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 23:07:24,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 23:07:24,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 23:07:24,010 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 23:07:24,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 23:07:24,011 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 23:07:24,011 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 23:07:24,011 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 23:07:24,011 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 23:07:24,011 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a9aad6636e75eb788a44e63e1649ee5df89ecae877c31a886978a8e3fdd2e8f [2024-11-22 23:07:24,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 23:07:24,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 23:07:24,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 23:07:24,224 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 23:07:24,224 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 23:07:24,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_dijkstra.c [2024-11-22 23:07:25,432 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 23:07:25,584 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 23:07:25,587 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_dijkstra.c [2024-11-22 23:07:25,593 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/390a9efba/d95c9804eef84a27854973a04c6c5847/FLAGfb6adf377 [2024-11-22 23:07:25,608 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/390a9efba/d95c9804eef84a27854973a04c6c5847 [2024-11-22 23:07:25,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 23:07:25,611 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 23:07:25,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 23:07:25,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 23:07:25,620 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 23:07:25,621 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:07:25" (1/1) ... [2024-11-22 23:07:25,622 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6640cb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:25, skipping insertion in model container [2024-11-22 23:07:25,622 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:07:25" (1/1) ... [2024-11-22 23:07:25,645 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 23:07:25,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:07:25,908 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 23:07:25,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:07:25,971 INFO L204 MainTranslator]: Completed translation [2024-11-22 23:07:25,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:25 WrapperNode [2024-11-22 23:07:25,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 23:07:25,973 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 23:07:25,973 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 23:07:25,973 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 23:07:25,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:25" (1/1) ... [2024-11-22 23:07:25,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:25" (1/1) ... [2024-11-22 23:07:26,022 INFO L138 Inliner]: procedures = 17, calls = 172, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 185 [2024-11-22 23:07:26,022 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 23:07:26,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 23:07:26,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 23:07:26,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 23:07:26,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:25" (1/1) ... [2024-11-22 23:07:26,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:25" (1/1) ... [2024-11-22 23:07:26,040 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:25" (1/1) ... [2024-11-22 23:07:26,066 INFO L175 MemorySlicer]: Split 138 memory accesses to 6 slices as follows [2, 29, 22, 20, 35, 30]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 11 writes are split as follows [0, 3, 2, 1, 3, 2]. [2024-11-22 23:07:26,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:25" (1/1) ... [2024-11-22 23:07:26,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:25" (1/1) ... [2024-11-22 23:07:26,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:25" (1/1) ... [2024-11-22 23:07:26,086 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:25" (1/1) ... [2024-11-22 23:07:26,088 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:25" (1/1) ... [2024-11-22 23:07:26,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:25" (1/1) ... [2024-11-22 23:07:26,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 23:07:26,096 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 23:07:26,096 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 23:07:26,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 23:07:26,097 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:25" (1/1) ... [2024-11-22 23:07:26,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:07:26,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:26,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 23:07:26,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 23:07:26,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 23:07:26,177 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_28_to_32_0 [2024-11-22 23:07:26,177 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_28_to_32_0 [2024-11-22 23:07:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 23:07:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 23:07:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 23:07:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 23:07:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 23:07:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-22 23:07:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 23:07:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 23:07:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 23:07:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 23:07:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 23:07:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-22 23:07:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-22 23:07:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 23:07:26,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 23:07:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 23:07:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 23:07:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 23:07:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 23:07:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-22 23:07:26,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-22 23:07:26,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-22 23:07:26,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-22 23:07:26,181 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_36_to_52_0 [2024-11-22 23:07:26,181 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_36_to_52_0 [2024-11-22 23:07:26,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 23:07:26,286 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 23:07:26,290 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 23:07:27,548 INFO L? ?]: Removed 1170 outVars from TransFormulas that were not future-live. [2024-11-22 23:07:27,548 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 23:07:27,576 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 23:07:27,577 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 23:07:27,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:07:27 BoogieIcfgContainer [2024-11-22 23:07:27,577 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 23:07:27,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 23:07:27,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 23:07:27,583 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 23:07:27,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:07:25" (1/3) ... [2024-11-22 23:07:27,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8f1aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:07:27, skipping insertion in model container [2024-11-22 23:07:27,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:25" (2/3) ... [2024-11-22 23:07:27,585 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8f1aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:07:27, skipping insertion in model container [2024-11-22 23:07:27,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:07:27" (3/3) ... [2024-11-22 23:07:27,586 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_dijkstra.c [2024-11-22 23:07:27,600 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 23:07:27,601 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 258 error locations. [2024-11-22 23:07:27,671 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 23:07:27,677 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;@6dba2744, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 23:07:27,677 INFO L334 AbstractCegarLoop]: Starting to check reachability of 258 error locations. [2024-11-22 23:07:27,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 561 states, 286 states have (on average 1.9230769230769231) internal successors, (550), 546 states have internal predecessors, (550), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-22 23:07:27,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 23:07:27,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:27,688 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:07:27,689 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_28_to_32_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-22 23:07:27,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:27,693 INFO L85 PathProgramCache]: Analyzing trace with hash 598093660, now seen corresponding path program 1 times [2024-11-22 23:07:27,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:27,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946792397] [2024-11-22 23:07:27,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:27,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:28,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:28,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946792397] [2024-11-22 23:07:28,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946792397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:28,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:28,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:07:28,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013182761] [2024-11-22 23:07:28,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:28,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:07:28,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:28,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:07:28,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:07:28,152 INFO L87 Difference]: Start difference. First operand has 561 states, 286 states have (on average 1.9230769230769231) internal successors, (550), 546 states have internal predecessors, (550), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:07:28,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:28,340 INFO L93 Difference]: Finished difference Result 1120 states and 1163 transitions. [2024-11-22 23:07:28,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:07:28,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 7 [2024-11-22 23:07:28,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:28,355 INFO L225 Difference]: With dead ends: 1120 [2024-11-22 23:07:28,355 INFO L226 Difference]: Without dead ends: 562 [2024-11-22 23:07:28,368 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 [2024-11-22 23:07:28,371 INFO L432 NwaCegarLoop]: 566 mSDtfsCounter, 11 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:28,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2730 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:07:28,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-22 23:07:28,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 561. [2024-11-22 23:07:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 287 states have (on average 1.9094076655052266) internal successors, (548), 546 states have internal predecessors, (548), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-22 23:07:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 573 transitions. [2024-11-22 23:07:28,426 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 573 transitions. Word has length 7 [2024-11-22 23:07:28,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:28,426 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 573 transitions. [2024-11-22 23:07:28,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:07:28,427 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 573 transitions. [2024-11-22 23:07:28,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-22 23:07:28,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:28,428 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:07:28,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 23:07:28,428 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-22 23:07:28,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:28,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1045221, now seen corresponding path program 1 times [2024-11-22 23:07:28,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:28,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235842965] [2024-11-22 23:07:28,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:28,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:28,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:28,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:28,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235842965] [2024-11-22 23:07:28,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235842965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:28,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:28,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:07:28,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563454905] [2024-11-22 23:07:28,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:28,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:07:28,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:28,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:07:28,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:07:28,578 INFO L87 Difference]: Start difference. First operand 561 states and 573 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 23:07:28,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:28,793 INFO L93 Difference]: Finished difference Result 1083 states and 1104 transitions. [2024-11-22 23:07:28,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:07:28,793 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 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 12 [2024-11-22 23:07:28,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:28,797 INFO L225 Difference]: With dead ends: 1083 [2024-11-22 23:07:28,797 INFO L226 Difference]: Without dead ends: 1081 [2024-11-22 23:07:28,798 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 [2024-11-22 23:07:28,799 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 885 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:28,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 2627 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:07:28,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2024-11-22 23:07:28,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 754. [2024-11-22 23:07:28,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 473 states have (on average 1.9217758985200846) internal successors, (909), 732 states have internal predecessors, (909), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (20), 18 states have call predecessors, (20), 18 states have call successors, (20) [2024-11-22 23:07:28,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 947 transitions. [2024-11-22 23:07:28,823 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 947 transitions. Word has length 12 [2024-11-22 23:07:28,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:28,823 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 947 transitions. [2024-11-22 23:07:28,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 23:07:28,823 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 947 transitions. [2024-11-22 23:07:28,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 23:07:28,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:28,824 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:07:28,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 23:07:28,824 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_28_to_32_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-22 23:07:28,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:28,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1343009412, now seen corresponding path program 1 times [2024-11-22 23:07:28,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:28,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862098329] [2024-11-22 23:07:28,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:28,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:29,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:29,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862098329] [2024-11-22 23:07:29,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862098329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:07:29,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166951155] [2024-11-22 23:07:29,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:29,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:29,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:29,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:29,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 23:07:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:29,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-22 23:07:29,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:29,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:07:29,219 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 [2024-11-22 23:07:29,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:07:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:29,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:07:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:29,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166951155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:07:29,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:07:29,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-22 23:07:29,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887668267] [2024-11-22 23:07:29,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:07:29,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 23:07:29,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:29,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 23:07:29,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-11-22 23:07:29,337 INFO L87 Difference]: Start difference. First operand 754 states and 947 transitions. Second operand has 20 states, 16 states have (on average 1.6875) internal successors, (27), 15 states have internal predecessors, (27), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:07:29,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:29,621 INFO L93 Difference]: Finished difference Result 760 states and 959 transitions. [2024-11-22 23:07:29,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 23:07:29,621 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 1.6875) internal successors, (27), 15 states have internal predecessors, (27), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-22 23:07:29,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:29,624 INFO L225 Difference]: With dead ends: 760 [2024-11-22 23:07:29,624 INFO L226 Difference]: Without dead ends: 759 [2024-11-22 23:07:29,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2024-11-22 23:07:29,625 INFO L432 NwaCegarLoop]: 560 mSDtfsCounter, 34 mSDsluCounter, 5304 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 5864 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:29,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 5864 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:07:29,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2024-11-22 23:07:29,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 755. [2024-11-22 23:07:29,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 474 states have (on average 1.9177215189873418) internal successors, (909), 732 states have internal predecessors, (909), 18 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2024-11-22 23:07:29,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 948 transitions. [2024-11-22 23:07:29,658 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 948 transitions. Word has length 13 [2024-11-22 23:07:29,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:29,658 INFO L471 AbstractCegarLoop]: Abstraction has 755 states and 948 transitions. [2024-11-22 23:07:29,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 1.6875) internal successors, (27), 15 states have internal predecessors, (27), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:07:29,659 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 948 transitions. [2024-11-22 23:07:29,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 23:07:29,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:29,660 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:07:29,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 23:07:29,863 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 [2024-11-22 23:07:29,865 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_36_to_52_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-22 23:07:29,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:29,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1004456195, now seen corresponding path program 1 times [2024-11-22 23:07:29,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:29,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127386013] [2024-11-22 23:07:29,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:29,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:30,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:30,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127386013] [2024-11-22 23:07:30,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127386013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:30,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:30,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 23:07:30,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465228333] [2024-11-22 23:07:30,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:30,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 23:07:30,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:30,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 23:07:30,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:07:30,101 INFO L87 Difference]: Start difference. First operand 755 states and 948 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 23:07:30,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:30,534 INFO L93 Difference]: Finished difference Result 1270 states and 1473 transitions. [2024-11-22 23:07:30,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 23:07:30,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 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 14 [2024-11-22 23:07:30,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:30,539 INFO L225 Difference]: With dead ends: 1270 [2024-11-22 23:07:30,539 INFO L226 Difference]: Without dead ends: 1268 [2024-11-22 23:07:30,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-22 23:07:30,541 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 1600 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 3068 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:30,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1608 Valid, 3068 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 23:07:30,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2024-11-22 23:07:30,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 951. [2024-11-22 23:07:30,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 661 states have (on average 1.91981845688351) internal successors, (1269), 919 states have internal predecessors, (1269), 25 states have call successors, (25), 6 states have call predecessors, (25), 8 states have return successors, (30), 25 states have call predecessors, (30), 25 states have call successors, (30) [2024-11-22 23:07:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1324 transitions. [2024-11-22 23:07:30,563 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1324 transitions. Word has length 14 [2024-11-22 23:07:30,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:30,563 INFO L471 AbstractCegarLoop]: Abstraction has 951 states and 1324 transitions. [2024-11-22 23:07:30,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 23:07:30,564 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1324 transitions. [2024-11-22 23:07:30,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 23:07:30,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:30,565 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 23:07:30,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 23:07:30,565 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_28_to_32_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-22 23:07:30,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:30,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1316381632, now seen corresponding path program 1 times [2024-11-22 23:07:30,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:30,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913198346] [2024-11-22 23:07:30,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:30,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:30,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:30,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913198346] [2024-11-22 23:07:30,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913198346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:07:30,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420814016] [2024-11-22 23:07:30,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:30,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:30,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:30,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:30,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 23:07:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:30,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-22 23:07:30,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:30,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:07:30,842 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 [2024-11-22 23:07:30,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:07:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:30,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:07:30,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:30,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420814016] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:07:30,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:07:30,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-22 23:07:30,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518688038] [2024-11-22 23:07:30,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:07:30,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 23:07:30,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:30,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 23:07:30,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2024-11-22 23:07:30,964 INFO L87 Difference]: Start difference. First operand 951 states and 1324 transitions. Second operand has 20 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:07:31,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:31,267 INFO L93 Difference]: Finished difference Result 982 states and 1363 transitions. [2024-11-22 23:07:31,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 23:07:31,268 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-22 23:07:31,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:31,272 INFO L225 Difference]: With dead ends: 982 [2024-11-22 23:07:31,272 INFO L226 Difference]: Without dead ends: 981 [2024-11-22 23:07:31,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2024-11-22 23:07:31,273 INFO L432 NwaCegarLoop]: 557 mSDtfsCounter, 88 mSDsluCounter, 4263 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 4820 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:31,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 4820 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:07:31,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2024-11-22 23:07:31,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 981. [2024-11-22 23:07:31,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 682 states have (on average 1.8958944281524928) internal successors, (1293), 943 states have internal predecessors, (1293), 28 states have call successors, (28), 9 states have call predecessors, (28), 14 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2024-11-22 23:07:31,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1360 transitions. [2024-11-22 23:07:31,291 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1360 transitions. Word has length 14 [2024-11-22 23:07:31,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:31,292 INFO L471 AbstractCegarLoop]: Abstraction has 981 states and 1360 transitions. [2024-11-22 23:07:31,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:07:31,292 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1360 transitions. [2024-11-22 23:07:31,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-22 23:07:31,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:31,293 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:07:31,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 23:07:31,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:31,497 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_36_to_52_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-22 23:07:31,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:31,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1467175530, now seen corresponding path program 1 times [2024-11-22 23:07:31,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:31,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497759262] [2024-11-22 23:07:31,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:31,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:07:31,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315535091] [2024-11-22 23:07:31,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:31,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:31,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:31,516 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:31,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 23:07:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:31,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-22 23:07:31,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:31,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:07:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:31,671 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:07:31,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:31,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497759262] [2024-11-22 23:07:31,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:07:31,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315535091] [2024-11-22 23:07:31,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315535091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:31,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:31,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 23:07:31,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442077776] [2024-11-22 23:07:31,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:31,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:07:31,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:31,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:07:31,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:07:31,674 INFO L87 Difference]: Start difference. First operand 981 states and 1360 transitions. Second operand has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:07:31,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:31,895 INFO L93 Difference]: Finished difference Result 1316 states and 1521 transitions. [2024-11-22 23:07:31,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 23:07:31,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-11-22 23:07:31,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:31,899 INFO L225 Difference]: With dead ends: 1316 [2024-11-22 23:07:31,900 INFO L226 Difference]: Without dead ends: 1314 [2024-11-22 23:07:31,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-22 23:07:31,900 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 894 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:31,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 2747 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:07:31,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2024-11-22 23:07:31,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1029. [2024-11-22 23:07:31,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 727 states have (on average 1.889958734525447) internal successors, (1374), 988 states have internal predecessors, (1374), 30 states have call successors, (30), 10 states have call predecessors, (30), 15 states have return successors, (41), 30 states have call predecessors, (41), 30 states have call successors, (41) [2024-11-22 23:07:31,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1445 transitions. [2024-11-22 23:07:31,924 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1445 transitions. Word has length 22 [2024-11-22 23:07:31,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:31,924 INFO L471 AbstractCegarLoop]: Abstraction has 1029 states and 1445 transitions. [2024-11-22 23:07:31,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:07:31,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1445 transitions. [2024-11-22 23:07:31,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-22 23:07:31,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:31,925 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:07:31,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 23:07:32,126 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 [2024-11-22 23:07:32,126 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_36_to_52_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-22 23:07:32,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:32,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1887462540, now seen corresponding path program 1 times [2024-11-22 23:07:32,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:32,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725200645] [2024-11-22 23:07:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:32,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:07:32,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:32,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725200645] [2024-11-22 23:07:32,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725200645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:07:32,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848886113] [2024-11-22 23:07:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:32,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:32,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:32,415 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:32,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 23:07:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:32,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 23:07:32,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:32,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:07:32,613 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 [2024-11-22 23:07:32,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:07:32,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:07:32,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:07:32,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-22 23:07:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:33,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848886113] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:07:33,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:07:33,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 25 [2024-11-22 23:07:33,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092112195] [2024-11-22 23:07:33,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:07:33,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 23:07:33,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:33,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 23:07:33,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2024-11-22 23:07:33,008 INFO L87 Difference]: Start difference. First operand 1029 states and 1445 transitions. Second operand has 26 states, 20 states have (on average 2.05) internal successors, (41), 23 states have internal predecessors, (41), 7 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 23:07:34,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:34,410 INFO L93 Difference]: Finished difference Result 1969 states and 2188 transitions. [2024-11-22 23:07:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 23:07:34,411 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 2.05) internal successors, (41), 23 states have internal predecessors, (41), 7 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 22 [2024-11-22 23:07:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:34,416 INFO L225 Difference]: With dead ends: 1969 [2024-11-22 23:07:34,416 INFO L226 Difference]: Without dead ends: 1968 [2024-11-22 23:07:34,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=215, Invalid=1267, Unknown=0, NotChecked=0, Total=1482 [2024-11-22 23:07:34,418 INFO L432 NwaCegarLoop]: 995 mSDtfsCounter, 3344 mSDsluCounter, 12945 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3355 SdHoareTripleChecker+Valid, 13940 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:34,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3355 Valid, 13940 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 23:07:34,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2024-11-22 23:07:34,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1031. [2024-11-22 23:07:34,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 728 states have (on average 1.8873626373626373) internal successors, (1374), 989 states have internal predecessors, (1374), 30 states have call successors, (30), 10 states have call predecessors, (30), 16 states have return successors, (43), 31 states have call predecessors, (43), 30 states have call successors, (43) [2024-11-22 23:07:34,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1447 transitions. [2024-11-22 23:07:34,446 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1447 transitions. Word has length 22 [2024-11-22 23:07:34,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:34,446 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1447 transitions. [2024-11-22 23:07:34,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 2.05) internal successors, (41), 23 states have internal predecessors, (41), 7 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 23:07:34,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1447 transitions. [2024-11-22 23:07:34,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 23:07:34,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:34,448 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] [2024-11-22 23:07:34,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 23:07:34,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:34,653 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_36_to_52_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-22 23:07:34,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:34,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1618203445, now seen corresponding path program 1 times [2024-11-22 23:07:34,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:34,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995947008] [2024-11-22 23:07:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:34,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:07:34,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:34,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995947008] [2024-11-22 23:07:34,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995947008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:07:34,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475769070] [2024-11-22 23:07:34,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:34,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:34,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:34,954 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:34,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 23:07:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:35,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-22 23:07:35,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:35,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:07:35,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:07:35,217 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 [2024-11-22 23:07:35,314 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 23:07:35,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2024-11-22 23:07:35,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:07:35,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:07:35,361 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:07:35,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475769070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:07:35,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 23:07:35,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2024-11-22 23:07:35,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017687667] [2024-11-22 23:07:35,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 23:07:35,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 23:07:35,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:35,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 23:07:35,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2024-11-22 23:07:35,604 INFO L87 Difference]: Start difference. First operand 1031 states and 1447 transitions. Second operand has 23 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 19 states have internal predecessors, (35), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 23:07:36,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:36,754 INFO L93 Difference]: Finished difference Result 1686 states and 2113 transitions. [2024-11-22 23:07:36,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 23:07:36,754 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 19 states have internal predecessors, (35), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2024-11-22 23:07:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:36,762 INFO L225 Difference]: With dead ends: 1686 [2024-11-22 23:07:36,762 INFO L226 Difference]: Without dead ends: 1685 [2024-11-22 23:07:36,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=1273, Unknown=0, NotChecked=0, Total=1482 [2024-11-22 23:07:36,764 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 2470 mSDsluCounter, 7137 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2480 SdHoareTripleChecker+Valid, 7630 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:36,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2480 Valid, 7630 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 23:07:36,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2024-11-22 23:07:36,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1077. [2024-11-22 23:07:36,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 772 states have (on average 1.88860103626943) internal successors, (1458), 1033 states have internal predecessors, (1458), 32 states have call successors, (32), 11 states have call predecessors, (32), 16 states have return successors, (44), 33 states have call predecessors, (44), 32 states have call successors, (44) [2024-11-22 23:07:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1534 transitions. [2024-11-22 23:07:36,790 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1534 transitions. Word has length 23 [2024-11-22 23:07:36,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:36,790 INFO L471 AbstractCegarLoop]: Abstraction has 1077 states and 1534 transitions. [2024-11-22 23:07:36,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 19 states have internal predecessors, (35), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 23:07:36,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1534 transitions. [2024-11-22 23:07:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 23:07:36,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:36,792 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] [2024-11-22 23:07:36,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 23:07:36,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:36,993 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_36_to_52_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-22 23:07:36,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:36,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1206412748, now seen corresponding path program 1 times [2024-11-22 23:07:36,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:36,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299674280] [2024-11-22 23:07:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:36,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:07:37,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610147402] [2024-11-22 23:07:37,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:37,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:37,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:37,012 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:37,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 23:07:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:37,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-22 23:07:37,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:37,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:07:37,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:07:37,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:07:37,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:07:37,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 23:07:37,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-11-22 23:07:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:37,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:07:37,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:37,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299674280] [2024-11-22 23:07:37,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:07:37,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610147402] [2024-11-22 23:07:37,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610147402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:37,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:37,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 23:07:37,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779832782] [2024-11-22 23:07:37,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:37,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 23:07:37,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:37,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 23:07:37,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-22 23:07:37,424 INFO L87 Difference]: Start difference. First operand 1077 states and 1534 transitions. Second operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:07:38,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:38,442 INFO L93 Difference]: Finished difference Result 1596 states and 2061 transitions. [2024-11-22 23:07:38,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 23:07:38,443 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-22 23:07:38,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:38,449 INFO L225 Difference]: With dead ends: 1596 [2024-11-22 23:07:38,449 INFO L226 Difference]: Without dead ends: 1594 [2024-11-22 23:07:38,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2024-11-22 23:07:38,451 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 2064 mSDsluCounter, 3481 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 3959 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:38,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2066 Valid, 3959 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 23:07:38,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2024-11-22 23:07:38,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1321. [2024-11-22 23:07:38,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1004 states have (on average 1.8914342629482073) internal successors, (1899), 1265 states have internal predecessors, (1899), 41 states have call successors, (41), 13 states have call predecessors, (41), 19 states have return successors, (55), 42 states have call predecessors, (55), 41 states have call successors, (55) [2024-11-22 23:07:38,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1995 transitions. [2024-11-22 23:07:38,488 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1995 transitions. Word has length 24 [2024-11-22 23:07:38,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:38,489 INFO L471 AbstractCegarLoop]: Abstraction has 1321 states and 1995 transitions. [2024-11-22 23:07:38,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:07:38,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1995 transitions. [2024-11-22 23:07:38,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-22 23:07:38,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:38,490 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] [2024-11-22 23:07:38,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 23:07:38,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:38,695 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_36_to_52_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-22 23:07:38,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:38,696 INFO L85 PathProgramCache]: Analyzing trace with hash -278517458, now seen corresponding path program 1 times [2024-11-22 23:07:38,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:38,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130533830] [2024-11-22 23:07:38,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:38,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:07:38,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331573438] [2024-11-22 23:07:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:38,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:38,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:38,713 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:38,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 23:07:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:38,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-22 23:07:38,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:38,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:07:38,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:07:38,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:07:38,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-22 23:07:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:39,013 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:07:39,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:39,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130533830] [2024-11-22 23:07:39,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:07:39,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331573438] [2024-11-22 23:07:39,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331573438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:39,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:39,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 23:07:39,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363762002] [2024-11-22 23:07:39,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:39,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 23:07:39,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:39,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 23:07:39,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 23:07:39,015 INFO L87 Difference]: Start difference. First operand 1321 states and 1995 transitions. Second operand has 9 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:07:39,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:39,706 INFO L93 Difference]: Finished difference Result 1594 states and 2059 transitions. [2024-11-22 23:07:39,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 23:07:39,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-22 23:07:39,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:39,712 INFO L225 Difference]: With dead ends: 1594 [2024-11-22 23:07:39,712 INFO L226 Difference]: Without dead ends: 1593 [2024-11-22 23:07:39,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-11-22 23:07:39,713 INFO L432 NwaCegarLoop]: 480 mSDtfsCounter, 1714 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 2968 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:39,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 2968 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 23:07:39,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2024-11-22 23:07:39,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1321. [2024-11-22 23:07:39,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1004 states have (on average 1.8904382470119523) internal successors, (1898), 1265 states have internal predecessors, (1898), 41 states have call successors, (41), 13 states have call predecessors, (41), 19 states have return successors, (55), 42 states have call predecessors, (55), 41 states have call successors, (55) [2024-11-22 23:07:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1994 transitions. [2024-11-22 23:07:39,753 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1994 transitions. Word has length 26 [2024-11-22 23:07:39,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:39,754 INFO L471 AbstractCegarLoop]: Abstraction has 1321 states and 1994 transitions. [2024-11-22 23:07:39,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:07:39,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1994 transitions. [2024-11-22 23:07:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-22 23:07:39,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:39,756 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] [2024-11-22 23:07:39,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 23:07:39,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:39,961 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_36_to_52_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-22 23:07:39,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:39,961 INFO L85 PathProgramCache]: Analyzing trace with hash -44106551, now seen corresponding path program 1 times [2024-11-22 23:07:39,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:39,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170977390] [2024-11-22 23:07:39,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:39,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:07:39,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888064629] [2024-11-22 23:07:39,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:39,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:39,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:39,988 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:39,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 23:07:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:40,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-22 23:07:40,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:40,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:07:40,085 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 [2024-11-22 23:07:40,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:07:40,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:40,333 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:07:40,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:40,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170977390] [2024-11-22 23:07:40,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:07:40,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888064629] [2024-11-22 23:07:40,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888064629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:40,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:40,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 23:07:40,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48602063] [2024-11-22 23:07:40,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:40,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 23:07:40,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:40,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 23:07:40,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-22 23:07:40,334 INFO L87 Difference]: Start difference. First operand 1321 states and 1994 transitions. Second operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:07:41,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:41,188 INFO L93 Difference]: Finished difference Result 1593 states and 2058 transitions. [2024-11-22 23:07:41,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 23:07:41,190 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-22 23:07:41,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:41,195 INFO L225 Difference]: With dead ends: 1593 [2024-11-22 23:07:41,195 INFO L226 Difference]: Without dead ends: 1592 [2024-11-22 23:07:41,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2024-11-22 23:07:41,196 INFO L432 NwaCegarLoop]: 483 mSDtfsCounter, 1717 mSDsluCounter, 4078 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 4561 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:41,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 4561 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 23:07:41,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2024-11-22 23:07:41,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1321. [2024-11-22 23:07:41,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1004 states have (on average 1.8894422310756973) internal successors, (1897), 1265 states have internal predecessors, (1897), 41 states have call successors, (41), 13 states have call predecessors, (41), 19 states have return successors, (55), 42 states have call predecessors, (55), 41 states have call successors, (55) [2024-11-22 23:07:41,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1993 transitions. [2024-11-22 23:07:41,224 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1993 transitions. Word has length 27 [2024-11-22 23:07:41,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:41,224 INFO L471 AbstractCegarLoop]: Abstraction has 1321 states and 1993 transitions. [2024-11-22 23:07:41,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:07:41,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1993 transitions. [2024-11-22 23:07:41,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-22 23:07:41,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:41,227 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] [2024-11-22 23:07:41,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 23:07:41,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 23:07:41,428 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_36_to_52_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-22 23:07:41,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:41,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1367303024, now seen corresponding path program 1 times [2024-11-22 23:07:41,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:41,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109474217] [2024-11-22 23:07:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:41,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:07:41,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224105132] [2024-11-22 23:07:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:41,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:41,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:41,446 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:41,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 23:07:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:41,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-22 23:07:41,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:41,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:07:41,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:07:41,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-22 23:07:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:41,695 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:07:41,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:41,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109474217] [2024-11-22 23:07:41,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:07:41,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224105132] [2024-11-22 23:07:41,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224105132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:41,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:41,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 23:07:41,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366433241] [2024-11-22 23:07:41,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:41,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 23:07:41,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:41,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 23:07:41,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:07:41,696 INFO L87 Difference]: Start difference. First operand 1321 states and 1993 transitions. Second operand has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:07:42,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:42,148 INFO L93 Difference]: Finished difference Result 1592 states and 2057 transitions. [2024-11-22 23:07:42,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 23:07:42,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-11-22 23:07:42,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:42,152 INFO L225 Difference]: With dead ends: 1592 [2024-11-22 23:07:42,152 INFO L226 Difference]: Without dead ends: 1591 [2024-11-22 23:07:42,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-22 23:07:42,153 INFO L432 NwaCegarLoop]: 503 mSDtfsCounter, 1653 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:42,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 2661 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 23:07:42,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2024-11-22 23:07:42,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1321. [2024-11-22 23:07:42,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1004 states have (on average 1.8884462151394423) internal successors, (1896), 1265 states have internal predecessors, (1896), 41 states have call successors, (41), 13 states have call predecessors, (41), 19 states have return successors, (55), 42 states have call predecessors, (55), 41 states have call successors, (55) [2024-11-22 23:07:42,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1992 transitions. [2024-11-22 23:07:42,186 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1992 transitions. Word has length 28 [2024-11-22 23:07:42,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:42,186 INFO L471 AbstractCegarLoop]: Abstraction has 1321 states and 1992 transitions. [2024-11-22 23:07:42,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:07:42,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1992 transitions. [2024-11-22 23:07:42,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-22 23:07:42,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:42,187 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] [2024-11-22 23:07:42,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 23:07:42,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:42,388 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_36_to_52_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-22 23:07:42,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:42,389 INFO L85 PathProgramCache]: Analyzing trace with hash 563279275, now seen corresponding path program 1 times [2024-11-22 23:07:42,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:42,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491096245] [2024-11-22 23:07:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:42,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:07:42,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983756206] [2024-11-22 23:07:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:42,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:42,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:42,408 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:42,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 23:07:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:42,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-22 23:07:42,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:42,500 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 11 [2024-11-22 23:07:42,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:07:42,507 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 [2024-11-22 23:07:42,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:07:42,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 23:07:42,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2024-11-22 23:07:42,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:07:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:42,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:07:42,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:42,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491096245] [2024-11-22 23:07:42,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:07:42,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983756206] [2024-11-22 23:07:42,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983756206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:07:42,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:07:42,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 23:07:42,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570020615] [2024-11-22 23:07:42,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:07:42,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 23:07:42,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:42,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 23:07:42,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-22 23:07:42,866 INFO L87 Difference]: Start difference. First operand 1321 states and 1992 transitions. Second operand has 13 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:07:43,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:43,800 INFO L93 Difference]: Finished difference Result 1591 states and 2056 transitions. [2024-11-22 23:07:43,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 23:07:43,800 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2024-11-22 23:07:43,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:43,804 INFO L225 Difference]: With dead ends: 1591 [2024-11-22 23:07:43,804 INFO L226 Difference]: Without dead ends: 1590 [2024-11-22 23:07:43,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-22 23:07:43,806 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 1758 mSDsluCounter, 3480 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 3954 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:43,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1760 Valid, 3954 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 848 Invalid, 1 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 23:07:43,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2024-11-22 23:07:43,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1321. [2024-11-22 23:07:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1004 states have (on average 1.8874501992031874) internal successors, (1895), 1265 states have internal predecessors, (1895), 41 states have call successors, (41), 13 states have call predecessors, (41), 19 states have return successors, (55), 42 states have call predecessors, (55), 41 states have call successors, (55) [2024-11-22 23:07:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1991 transitions. [2024-11-22 23:07:43,850 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1991 transitions. Word has length 29 [2024-11-22 23:07:43,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:43,851 INFO L471 AbstractCegarLoop]: Abstraction has 1321 states and 1991 transitions. [2024-11-22 23:07:43,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:07:43,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1991 transitions. [2024-11-22 23:07:43,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-22 23:07:43,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:43,852 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:07:43,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 23:07:44,056 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,SelfDestructingSolverStorable12 [2024-11-22 23:07:44,056 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_36_to_52_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-22 23:07:44,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:44,057 INFO L85 PathProgramCache]: Analyzing trace with hash -2076645538, now seen corresponding path program 2 times [2024-11-22 23:07:44,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:44,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069925445] [2024-11-22 23:07:44,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:07:44,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:44,070 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:07:44,070 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:07:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 23:07:44,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:44,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069925445] [2024-11-22 23:07:44,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069925445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:07:44,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38874545] [2024-11-22 23:07:44,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:07:44,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:44,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:44,614 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:44,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 23:07:44,703 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:07:44,704 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:07:44,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-22 23:07:44,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:44,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:07:44,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:07:45,028 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 23:07:45,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2024-11-22 23:07:45,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:07:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 23:07:45,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:07:45,455 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 44 treesize of output 40 [2024-11-22 23:07:45,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38874545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:07:45,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 23:07:45,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12] total 29 [2024-11-22 23:07:45,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551672798] [2024-11-22 23:07:45,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 23:07:45,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-22 23:07:45,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:45,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-22 23:07:45,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1268, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 23:07:45,501 INFO L87 Difference]: Start difference. First operand 1321 states and 1991 transitions. Second operand has 30 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 25 states have internal predecessors, (40), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 23:07:47,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:47,184 INFO L93 Difference]: Finished difference Result 2213 states and 2646 transitions. [2024-11-22 23:07:47,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-22 23:07:47,184 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 25 states have internal predecessors, (40), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 31 [2024-11-22 23:07:47,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:47,191 INFO L225 Difference]: With dead ends: 2213 [2024-11-22 23:07:47,191 INFO L226 Difference]: Without dead ends: 2212 [2024-11-22 23:07:47,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=460, Invalid=2962, Unknown=0, NotChecked=0, Total=3422 [2024-11-22 23:07:47,192 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 5656 mSDsluCounter, 8237 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5664 SdHoareTripleChecker+Valid, 8727 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:47,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5664 Valid, 8727 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 23:07:47,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2024-11-22 23:07:47,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 1079. [2024-11-22 23:07:47,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 773 states have (on average 1.8783958602846054) internal successors, (1452), 1034 states have internal predecessors, (1452), 32 states have call successors, (32), 11 states have call predecessors, (32), 17 states have return successors, (45), 33 states have call predecessors, (45), 32 states have call successors, (45) [2024-11-22 23:07:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1529 transitions. [2024-11-22 23:07:47,222 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1529 transitions. Word has length 31 [2024-11-22 23:07:47,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:47,222 INFO L471 AbstractCegarLoop]: Abstraction has 1079 states and 1529 transitions. [2024-11-22 23:07:47,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 25 states have internal predecessors, (40), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 23:07:47,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1529 transitions. [2024-11-22 23:07:47,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-22 23:07:47,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:47,223 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2024-11-22 23:07:47,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 23:07:47,423 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,SelfDestructingSolverStorable13 [2024-11-22 23:07:47,423 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_28_to_32_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-22 23:07:47,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:47,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1292559712, now seen corresponding path program 2 times [2024-11-22 23:07:47,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:47,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178070312] [2024-11-22 23:07:47,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:07:47,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:47,442 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:07:47,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:07:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:47,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:47,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178070312] [2024-11-22 23:07:47,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178070312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:07:47,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239933020] [2024-11-22 23:07:47,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:07:47,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:47,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:47,914 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:47,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 23:07:48,008 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:07:48,008 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:07:48,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-22 23:07:48,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:48,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:07:48,077 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 [2024-11-22 23:07:48,104 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 [2024-11-22 23:07:48,132 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 [2024-11-22 23:07:48,157 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 [2024-11-22 23:07:48,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:07:48,166 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:48,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:07:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:07:48,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239933020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:07:48,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:07:48,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 17] total 45 [2024-11-22 23:07:48,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363982948] [2024-11-22 23:07:48,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:07:48,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-22 23:07:48,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:48,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-22 23:07:48,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1698, Unknown=0, NotChecked=0, Total=2070 [2024-11-22 23:07:48,407 INFO L87 Difference]: Start difference. First operand 1079 states and 1529 transitions. Second operand has 46 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 35 states have internal predecessors, (73), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:07:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:07:48,985 INFO L93 Difference]: Finished difference Result 1140 states and 1607 transitions. [2024-11-22 23:07:48,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-22 23:07:48,986 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 35 states have internal predecessors, (73), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-22 23:07:48,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:07:48,989 INFO L225 Difference]: With dead ends: 1140 [2024-11-22 23:07:48,989 INFO L226 Difference]: Without dead ends: 1139 [2024-11-22 23:07:48,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1621 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1003, Invalid=3967, Unknown=0, NotChecked=0, Total=4970 [2024-11-22 23:07:48,990 INFO L432 NwaCegarLoop]: 556 mSDtfsCounter, 193 mSDsluCounter, 5911 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 6467 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:07:48,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 6467 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:07:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2024-11-22 23:07:49,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2024-11-22 23:07:49,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 815 states have (on average 1.8404907975460123) internal successors, (1500), 1082 states have internal predecessors, (1500), 38 states have call successors, (38), 17 states have call predecessors, (38), 29 states have return successors, (63), 39 states have call predecessors, (63), 38 states have call successors, (63) [2024-11-22 23:07:49,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1601 transitions. [2024-11-22 23:07:49,021 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1601 transitions. Word has length 32 [2024-11-22 23:07:49,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:07:49,022 INFO L471 AbstractCegarLoop]: Abstraction has 1139 states and 1601 transitions. [2024-11-22 23:07:49,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 35 states have internal predecessors, (73), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:07:49,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1601 transitions. [2024-11-22 23:07:49,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-22 23:07:49,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:07:49,023 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:07:49,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 23:07:49,223 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,SelfDestructingSolverStorable14 [2024-11-22 23:07:49,223 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_36_to_52_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_36_to_52_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_36_to_52_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 256 more)] === [2024-11-22 23:07:49,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:07:49,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2115444349, now seen corresponding path program 1 times [2024-11-22 23:07:49,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:07:49,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158277863] [2024-11-22 23:07:49,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:49,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:07:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:07:49,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287397938] [2024-11-22 23:07:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:07:49,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:07:49,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:07:49,238 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:07:49,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 23:07:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:07:49,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-22 23:07:49,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:07:49,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:07:49,344 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 11 [2024-11-22 23:07:49,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:07:49,484 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 40 treesize of output 17 [2024-11-22 23:07:49,517 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 47 treesize of output 20 [2024-11-22 23:07:49,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 23:07:49,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 30 [2024-11-22 23:07:53,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:07:53,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:07:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:07:53,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:07:53,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:07:53,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158277863] [2024-11-22 23:07:53,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:07:53,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287397938] [2024-11-22 23:07:53,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287397938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:07:53,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:07:53,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-22 23:07:53,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349445247] [2024-11-22 23:07:53,762 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 23:07:53,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 23:07:53,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:07:53,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 23:07:53,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=174, Unknown=1, NotChecked=0, Total=210 [2024-11-22 23:07:53,763 INFO L87 Difference]: Start difference. First operand 1139 states and 1601 transitions. Second operand has 13 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 23:07:57,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:08:01,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:08:05,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:08:09,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:08:13,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:08:18,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:08:22,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:08:26,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:08:30,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:08:34,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:08:38,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:08:42,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 23:08:46,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:08:50,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 23:08:54,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 23:08:59,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]