./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 494d69f416dd1b0b56dc0371ee72744b83dbc298da37778d271d6f779b4cdcdc --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 20:01:20,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 20:01:20,571 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 20:01:20,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 20:01:20,579 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 20:01:20,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 20:01:20,610 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 20:01:20,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 20:01:20,611 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 20:01:20,612 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 20:01:20,612 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 20:01:20,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 20:01:20,613 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 20:01:20,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 20:01:20,617 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 20:01:20,618 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 20:01:20,618 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 20:01:20,618 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 20:01:20,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 20:01:20,619 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 20:01:20,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 20:01:20,620 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 20:01:20,621 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 20:01:20,621 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 20:01:20,622 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 20:01:20,622 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 20:01:20,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 20:01:20,622 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 20:01:20,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 20:01:20,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 20:01:20,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 20:01:20,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 20:01:20,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 20:01:20,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 20:01:20,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 20:01:20,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 20:01:20,627 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 20:01:20,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 20:01:20,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 20:01:20,628 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 20:01:20,628 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 20:01:20,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 20:01:20,628 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/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 494d69f416dd1b0b56dc0371ee72744b83dbc298da37778d271d6f779b4cdcdc Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 20:01:20,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 20:01:21,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 20:01:21,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 20:01:21,024 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 20:01:21,025 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 20:01:21,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c [2024-09-12 20:01:22,635 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 20:01:22,838 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 20:01:22,839 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c [2024-09-12 20:01:22,847 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/127ba9d00/c7ceaf216e5d4d2299f004949127e9b9/FLAG3339847ab [2024-09-12 20:01:22,859 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/127ba9d00/c7ceaf216e5d4d2299f004949127e9b9 [2024-09-12 20:01:22,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 20:01:22,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 20:01:22,864 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 20:01:22,864 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 20:01:22,869 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 20:01:22,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 08:01:22" (1/1) ... [2024-09-12 20:01:22,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f04d5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:22, skipping insertion in model container [2024-09-12 20:01:22,871 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 08:01:22" (1/1) ... [2024-09-12 20:01:22,895 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 20:01:23,039 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c[1019,1032] [2024-09-12 20:01:23,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 20:01:23,097 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 20:01:23,109 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c[1019,1032] [2024-09-12 20:01:23,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 20:01:23,161 INFO L204 MainTranslator]: Completed translation [2024-09-12 20:01:23,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:23 WrapperNode [2024-09-12 20:01:23,161 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 20:01:23,162 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 20:01:23,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 20:01:23,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 20:01:23,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:23" (1/1) ... [2024-09-12 20:01:23,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:23" (1/1) ... [2024-09-12 20:01:23,188 INFO L138 Inliner]: procedures = 16, calls = 106, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 20:01:23,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 20:01:23,189 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 20:01:23,190 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 20:01:23,190 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 20:01:23,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:23" (1/1) ... [2024-09-12 20:01:23,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:23" (1/1) ... [2024-09-12 20:01:23,204 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:23" (1/1) ... [2024-09-12 20:01:23,237 INFO L175 MemorySlicer]: Split 66 memory accesses to 9 slices as follows [2, 7, 7, 8, 8, 8, 8, 8, 10]. 15 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0]. The 14 writes are split as follows [0, 1, 1, 2, 2, 2, 2, 2, 2]. [2024-09-12 20:01:23,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:23" (1/1) ... [2024-09-12 20:01:23,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:23" (1/1) ... [2024-09-12 20:01:23,254 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:23" (1/1) ... [2024-09-12 20:01:23,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:23" (1/1) ... [2024-09-12 20:01:23,258 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:23" (1/1) ... [2024-09-12 20:01:23,259 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:23" (1/1) ... [2024-09-12 20:01:23,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 20:01:23,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 20:01:23,269 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 20:01:23,269 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 20:01:23,270 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:23" (1/1) ... [2024-09-12 20:01:23,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 20:01:23,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:23,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-12 20:01:23,309 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-12 20:01:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 20:01:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_48_0 [2024-09-12 20:01:23,348 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_48_0 [2024-09-12 20:01:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 20:01:23,349 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 20:01:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 20:01:23,349 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 20:01:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 20:01:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 20:01:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-12 20:01:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-12 20:01:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-12 20:01:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-09-12 20:01:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-09-12 20:01:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-09-12 20:01:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-09-12 20:01:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-12 20:01:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 20:01:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 20:01:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-12 20:01:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-12 20:01:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-12 20:01:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-09-12 20:01:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-09-12 20:01:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-09-12 20:01:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-09-12 20:01:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 20:01:23,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 20:01:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 20:01:23,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 20:01:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 20:01:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 20:01:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-12 20:01:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-12 20:01:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-12 20:01:23,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-09-12 20:01:23,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-09-12 20:01:23,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-09-12 20:01:23,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-09-12 20:01:23,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 20:01:23,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 20:01:23,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 20:01:23,470 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 20:01:23,472 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 20:01:24,354 INFO L? ?]: Removed 164 outVars from TransFormulas that were not future-live. [2024-09-12 20:01:24,354 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 20:01:24,383 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 20:01:24,383 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-12 20:01:24,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 08:01:24 BoogieIcfgContainer [2024-09-12 20:01:24,383 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 20:01:24,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 20:01:24,396 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 20:01:24,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 20:01:24,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 08:01:22" (1/3) ... [2024-09-12 20:01:24,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46848eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 08:01:24, skipping insertion in model container [2024-09-12 20:01:24,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:23" (2/3) ... [2024-09-12 20:01:24,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46848eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 08:01:24, skipping insertion in model container [2024-09-12 20:01:24,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 08:01:24" (3/3) ... [2024-09-12 20:01:24,402 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd-ll.c [2024-09-12 20:01:24,418 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 20:01:24,419 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2024-09-12 20:01:24,481 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 20:01:24,488 INFO L336 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=All, 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;@25f314b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 20:01:24,489 INFO L337 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2024-09-12 20:01:24,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 81 states have (on average 1.7654320987654322) internal successors, (143), 139 states have internal predecessors, (143), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 20:01:24,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 20:01:24,506 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:24,507 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:24,507 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:01:24,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash -915319873, now seen corresponding path program 1 times [2024-09-12 20:01:24,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:24,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643220775] [2024-09-12 20:01:24,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:24,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:24,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:01:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:24,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:01:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:24,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:01:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:01:24,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:24,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643220775] [2024-09-12 20:01:24,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643220775] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:24,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:24,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 20:01:24,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103367824] [2024-09-12 20:01:24,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:24,829 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 20:01:24,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:24,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 20:01:24,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 20:01:24,853 INFO L87 Difference]: Start difference. First operand has 157 states, 81 states have (on average 1.7654320987654322) internal successors, (143), 139 states have internal predecessors, (143), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:01:24,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:24,916 INFO L93 Difference]: Finished difference Result 308 states and 342 transitions. [2024-09-12 20:01:24,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 20:01:24,919 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-12 20:01:24,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:24,932 INFO L225 Difference]: With dead ends: 308 [2024-09-12 20:01:24,932 INFO L226 Difference]: Without dead ends: 153 [2024-09-12 20:01:24,939 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 20:01:24,942 INFO L434 NwaCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:24,943 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 20:01:24,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-09-12 20:01:25,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2024-09-12 20:01:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 79 states have (on average 1.7468354430379747) internal successors, (138), 137 states have internal predecessors, (138), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 20:01:25,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 162 transitions. [2024-09-12 20:01:25,049 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 162 transitions. Word has length 21 [2024-09-12 20:01:25,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:25,050 INFO L474 AbstractCegarLoop]: Abstraction has 153 states and 162 transitions. [2024-09-12 20:01:25,051 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:01:25,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:25,052 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 162 transitions. [2024-09-12 20:01:25,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 20:01:25,054 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:25,054 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:25,055 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 20:01:25,056 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:01:25,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:25,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1559183547, now seen corresponding path program 1 times [2024-09-12 20:01:25,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:25,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528391778] [2024-09-12 20:01:25,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:25,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:25,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560088132] [2024-09-12 20:01:25,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:25,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:25,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:25,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:25,167 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 20:01:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:25,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 20:01:25,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:25,420 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 [2024-09-12 20:01:25,427 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 [2024-09-12 20:01:25,485 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 [2024-09-12 20:01:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:01:25,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:25,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:25,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528391778] [2024-09-12 20:01:25,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:25,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560088132] [2024-09-12 20:01:25,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560088132] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:25,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:25,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:01:25,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96688472] [2024-09-12 20:01:25,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:25,505 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:01:25,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:25,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:01:25,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:01:25,507 INFO L87 Difference]: Start difference. First operand 153 states and 162 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 20:01:25,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:25,790 INFO L93 Difference]: Finished difference Result 250 states and 266 transitions. [2024-09-12 20:01:25,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:01:25,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-09-12 20:01:25,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:25,793 INFO L225 Difference]: With dead ends: 250 [2024-09-12 20:01:25,793 INFO L226 Difference]: Without dead ends: 249 [2024-09-12 20:01:25,794 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:01:25,799 INFO L434 NwaCegarLoop]: 142 mSDtfsCounter, 159 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:25,799 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 689 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:01:25,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-09-12 20:01:25,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 182. [2024-09-12 20:01:25,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 104 states have (on average 1.7403846153846154) internal successors, (181), 162 states have internal predecessors, (181), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2024-09-12 20:01:25,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 212 transitions. [2024-09-12 20:01:25,839 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 212 transitions. Word has length 21 [2024-09-12 20:01:25,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:25,840 INFO L474 AbstractCegarLoop]: Abstraction has 182 states and 212 transitions. [2024-09-12 20:01:25,840 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 20:01:25,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 212 transitions. [2024-09-12 20:01:25,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 20:01:25,841 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:25,841 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:25,860 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-12 20:01:26,045 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:26,046 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:01:26,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:26,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1090049806, now seen corresponding path program 1 times [2024-09-12 20:01:26,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:26,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351009194] [2024-09-12 20:01:26,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:26,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:26,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482147731] [2024-09-12 20:01:26,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:26,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:26,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:26,102 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:26,104 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 20:01:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:26,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-12 20:01:26,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:26,262 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 [2024-09-12 20:01:26,266 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 [2024-09-12 20:01:26,347 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 [2024-09-12 20:01:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:01:26,380 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:26,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:26,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351009194] [2024-09-12 20:01:26,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:26,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482147731] [2024-09-12 20:01:26,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482147731] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:26,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:26,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:01:26,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060036954] [2024-09-12 20:01:26,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:26,382 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:01:26,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:26,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:01:26,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:01:26,386 INFO L87 Difference]: Start difference. First operand 182 states and 212 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 20:01:26,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:26,606 INFO L93 Difference]: Finished difference Result 249 states and 265 transitions. [2024-09-12 20:01:26,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:01:26,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2024-09-12 20:01:26,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:26,612 INFO L225 Difference]: With dead ends: 249 [2024-09-12 20:01:26,612 INFO L226 Difference]: Without dead ends: 248 [2024-09-12 20:01:26,612 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:01:26,613 INFO L434 NwaCegarLoop]: 143 mSDtfsCounter, 156 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:26,614 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 691 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:01:26,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-12 20:01:26,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 182. [2024-09-12 20:01:26,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 104 states have (on average 1.7307692307692308) internal successors, (180), 162 states have internal predecessors, (180), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2024-09-12 20:01:26,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 211 transitions. [2024-09-12 20:01:26,647 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 211 transitions. Word has length 22 [2024-09-12 20:01:26,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:26,647 INFO L474 AbstractCegarLoop]: Abstraction has 182 states and 211 transitions. [2024-09-12 20:01:26,647 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 20:01:26,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:26,648 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 211 transitions. [2024-09-12 20:01:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-12 20:01:26,649 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:26,649 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:26,667 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 20:01:26,851 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:26,852 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_33_to_48_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:01:26,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:26,853 INFO L85 PathProgramCache]: Analyzing trace with hash -568194275, now seen corresponding path program 1 times [2024-09-12 20:01:26,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:26,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238730367] [2024-09-12 20:01:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:26,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:26,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960450534] [2024-09-12 20:01:26,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:26,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:26,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:26,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:26,934 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 20:01:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:27,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-12 20:01:27,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:27,076 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 [2024-09-12 20:01:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:01:27,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:27,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:27,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238730367] [2024-09-12 20:01:27,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:27,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960450534] [2024-09-12 20:01:27,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960450534] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:27,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:27,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:01:27,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577547726] [2024-09-12 20:01:27,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:27,113 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:01:27,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:27,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:01:27,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:01:27,117 INFO L87 Difference]: Start difference. First operand 182 states and 211 transitions. Second operand has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 20:01:27,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:27,362 INFO L93 Difference]: Finished difference Result 296 states and 335 transitions. [2024-09-12 20:01:27,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:01:27,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2024-09-12 20:01:27,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:27,367 INFO L225 Difference]: With dead ends: 296 [2024-09-12 20:01:27,367 INFO L226 Difference]: Without dead ends: 294 [2024-09-12 20:01:27,368 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:01:27,369 INFO L434 NwaCegarLoop]: 149 mSDtfsCounter, 167 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:27,369 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 712 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:01:27,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-09-12 20:01:27,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 221. [2024-09-12 20:01:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 137 states have (on average 1.7153284671532847) internal successors, (235), 196 states have internal predecessors, (235), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (22), 18 states have call predecessors, (22), 18 states have call successors, (22) [2024-09-12 20:01:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 277 transitions. [2024-09-12 20:01:27,395 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 277 transitions. Word has length 23 [2024-09-12 20:01:27,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:27,395 INFO L474 AbstractCegarLoop]: Abstraction has 221 states and 277 transitions. [2024-09-12 20:01:27,395 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 20:01:27,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:27,396 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 277 transitions. [2024-09-12 20:01:27,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-12 20:01:27,396 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:27,397 INFO L216 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] [2024-09-12 20:01:27,414 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-12 20:01:27,600 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:27,601 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_33_to_48_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:01:27,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:27,601 INFO L85 PathProgramCache]: Analyzing trace with hash -573848193, now seen corresponding path program 1 times [2024-09-12 20:01:27,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:27,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217445645] [2024-09-12 20:01:27,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:27,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:27,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017005718] [2024-09-12 20:01:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:27,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:27,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:27,666 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:27,667 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 20:01:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:27,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-12 20:01:27,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:27,816 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 [2024-09-12 20:01:27,821 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 11 treesize of output 7 [2024-09-12 20:01:27,830 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 [2024-09-12 20:01:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:01:27,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:27,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:27,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217445645] [2024-09-12 20:01:27,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:27,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017005718] [2024-09-12 20:01:27,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017005718] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:27,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:27,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:01:27,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013334339] [2024-09-12 20:01:27,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:27,969 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:01:27,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:27,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:01:27,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:01:27,970 INFO L87 Difference]: Start difference. First operand 221 states and 277 transitions. Second operand has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 20:01:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:28,432 INFO L93 Difference]: Finished difference Result 281 states and 326 transitions. [2024-09-12 20:01:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:01:28,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2024-09-12 20:01:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:28,434 INFO L225 Difference]: With dead ends: 281 [2024-09-12 20:01:28,434 INFO L226 Difference]: Without dead ends: 279 [2024-09-12 20:01:28,435 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:01:28,435 INFO L434 NwaCegarLoop]: 141 mSDtfsCounter, 144 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:28,436 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 797 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:01:28,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-09-12 20:01:28,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 221. [2024-09-12 20:01:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 137 states have (on average 1.7007299270072993) internal successors, (233), 196 states have internal predecessors, (233), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (22), 18 states have call predecessors, (22), 18 states have call successors, (22) [2024-09-12 20:01:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 275 transitions. [2024-09-12 20:01:28,469 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 275 transitions. Word has length 25 [2024-09-12 20:01:28,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:28,470 INFO L474 AbstractCegarLoop]: Abstraction has 221 states and 275 transitions. [2024-09-12 20:01:28,470 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 20:01:28,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:28,470 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 275 transitions. [2024-09-12 20:01:28,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-12 20:01:28,471 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:28,471 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:28,490 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 20:01:28,675 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:28,676 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:01:28,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:28,676 INFO L85 PathProgramCache]: Analyzing trace with hash 320774268, now seen corresponding path program 1 times [2024-09-12 20:01:28,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:28,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591739423] [2024-09-12 20:01:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:28,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:28,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012714526] [2024-09-12 20:01:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:28,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:28,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:28,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:28,725 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 20:01:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:28,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-12 20:01:28,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:28,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:01:28,876 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 [2024-09-12 20:01:28,882 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 [2024-09-12 20:01:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:01:29,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:29,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:29,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591739423] [2024-09-12 20:01:29,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:29,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012714526] [2024-09-12 20:01:29,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012714526] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:29,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:29,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 20:01:29,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855885652] [2024-09-12 20:01:29,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:29,033 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 20:01:29,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:29,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 20:01:29,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:01:29,034 INFO L87 Difference]: Start difference. First operand 221 states and 275 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 20:01:29,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:29,415 INFO L93 Difference]: Finished difference Result 285 states and 329 transitions. [2024-09-12 20:01:29,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 20:01:29,417 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2024-09-12 20:01:29,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:29,419 INFO L225 Difference]: With dead ends: 285 [2024-09-12 20:01:29,419 INFO L226 Difference]: Without dead ends: 283 [2024-09-12 20:01:29,419 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:01:29,420 INFO L434 NwaCegarLoop]: 138 mSDtfsCounter, 145 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:29,423 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1053 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:01:29,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-09-12 20:01:29,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 225. [2024-09-12 20:01:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 140 states have (on average 1.6857142857142857) internal successors, (236), 199 states have internal predecessors, (236), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (22), 18 states have call predecessors, (22), 18 states have call successors, (22) [2024-09-12 20:01:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 278 transitions. [2024-09-12 20:01:29,454 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 278 transitions. Word has length 30 [2024-09-12 20:01:29,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:29,454 INFO L474 AbstractCegarLoop]: Abstraction has 225 states and 278 transitions. [2024-09-12 20:01:29,454 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 20:01:29,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:29,455 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 278 transitions. [2024-09-12 20:01:29,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 20:01:29,456 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:29,456 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:29,473 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 20:01:29,659 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 20:01:29,660 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_33_to_48_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:01:29,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:29,660 INFO L85 PathProgramCache]: Analyzing trace with hash -111061819, now seen corresponding path program 1 times [2024-09-12 20:01:29,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:29,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017701729] [2024-09-12 20:01:29,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:29,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:29,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141066757] [2024-09-12 20:01:29,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:29,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:29,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:29,702 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:29,703 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 20:01:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:29,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 20:01:29,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:29,837 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 [2024-09-12 20:01:29,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:01:30,060 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 [2024-09-12 20:01:30,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 20:01:30,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:30,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:30,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017701729] [2024-09-12 20:01:30,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:30,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141066757] [2024-09-12 20:01:30,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141066757] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:30,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:30,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-09-12 20:01:30,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351067269] [2024-09-12 20:01:30,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:30,082 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 20:01:30,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:30,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 20:01:30,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:01:30,083 INFO L87 Difference]: Start difference. First operand 225 states and 278 transitions. Second operand has 11 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:01:30,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:30,589 INFO L93 Difference]: Finished difference Result 400 states and 472 transitions. [2024-09-12 20:01:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 20:01:30,590 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2024-09-12 20:01:30,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:30,593 INFO L225 Difference]: With dead ends: 400 [2024-09-12 20:01:30,593 INFO L226 Difference]: Without dead ends: 399 [2024-09-12 20:01:30,594 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-12 20:01:30,594 INFO L434 NwaCegarLoop]: 133 mSDtfsCounter, 290 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:30,595 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1192 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:01:30,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-09-12 20:01:30,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 303. [2024-09-12 20:01:30,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 207 states have (on average 1.714975845410628) internal successors, (355), 267 states have internal predecessors, (355), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (32), 26 states have call predecessors, (32), 25 states have call successors, (32) [2024-09-12 20:01:30,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 415 transitions. [2024-09-12 20:01:30,643 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 415 transitions. Word has length 33 [2024-09-12 20:01:30,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:30,643 INFO L474 AbstractCegarLoop]: Abstraction has 303 states and 415 transitions. [2024-09-12 20:01:30,643 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:01:30,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:30,644 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 415 transitions. [2024-09-12 20:01:30,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 20:01:30,645 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:30,646 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:30,663 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-12 20:01:30,846 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:30,847 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_33_to_48_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:01:30,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:30,847 INFO L85 PathProgramCache]: Analyzing trace with hash 852051026, now seen corresponding path program 1 times [2024-09-12 20:01:30,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:30,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173120182] [2024-09-12 20:01:30,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:30,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:30,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579865857] [2024-09-12 20:01:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:30,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:30,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:30,881 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:30,884 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 20:01:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:31,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 20:01:31,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:31,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:01:31,046 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 [2024-09-12 20:01:31,183 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 [2024-09-12 20:01:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 20:01:31,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:31,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:31,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173120182] [2024-09-12 20:01:31,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:31,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579865857] [2024-09-12 20:01:31,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579865857] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:31,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:31,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-09-12 20:01:31,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355743896] [2024-09-12 20:01:31,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:31,207 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 20:01:31,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:31,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 20:01:31,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:01:31,208 INFO L87 Difference]: Start difference. First operand 303 states and 415 transitions. Second operand has 11 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:01:31,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:31,668 INFO L93 Difference]: Finished difference Result 399 states and 470 transitions. [2024-09-12 20:01:31,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 20:01:31,669 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2024-09-12 20:01:31,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:31,672 INFO L225 Difference]: With dead ends: 399 [2024-09-12 20:01:31,672 INFO L226 Difference]: Without dead ends: 398 [2024-09-12 20:01:31,672 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-12 20:01:31,673 INFO L434 NwaCegarLoop]: 134 mSDtfsCounter, 286 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:31,673 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1198 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:01:31,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-09-12 20:01:31,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 303. [2024-09-12 20:01:31,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 207 states have (on average 1.7053140096618358) internal successors, (353), 267 states have internal predecessors, (353), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (32), 26 states have call predecessors, (32), 25 states have call successors, (32) [2024-09-12 20:01:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 413 transitions. [2024-09-12 20:01:31,718 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 413 transitions. Word has length 34 [2024-09-12 20:01:31,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:31,718 INFO L474 AbstractCegarLoop]: Abstraction has 303 states and 413 transitions. [2024-09-12 20:01:31,718 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:01:31,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 413 transitions. [2024-09-12 20:01:31,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-12 20:01:31,719 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:31,719 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:31,737 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 20:01:31,923 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:31,924 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_33_to_48_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:01:31,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:31,924 INFO L85 PathProgramCache]: Analyzing trace with hash 643778151, now seen corresponding path program 1 times [2024-09-12 20:01:31,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:31,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695014964] [2024-09-12 20:01:31,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:31,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:31,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35428163] [2024-09-12 20:01:31,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:31,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:31,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:31,968 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:31,969 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 20:01:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:32,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 20:01:32,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:32,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:01:32,174 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 [2024-09-12 20:01:32,316 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 [2024-09-12 20:01:32,320 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 [2024-09-12 20:01:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:01:32,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:01:32,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:32,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695014964] [2024-09-12 20:01:32,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:32,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35428163] [2024-09-12 20:01:32,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35428163] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:01:32,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:01:32,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-09-12 20:01:32,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299340711] [2024-09-12 20:01:32,452 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:01:32,452 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 20:01:32,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:32,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 20:01:32,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-09-12 20:01:32,454 INFO L87 Difference]: Start difference. First operand 303 states and 413 transitions. Second operand has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 20:01:36,469 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] [2024-09-12 20:01:40,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:01:44,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:01:48,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:01:52,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:01:56,947 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] [2024-09-12 20:01:57,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:57,071 INFO L93 Difference]: Finished difference Result 400 states and 467 transitions. [2024-09-12 20:01:57,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 20:01:57,072 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2024-09-12 20:01:57,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:57,074 INFO L225 Difference]: With dead ends: 400 [2024-09-12 20:01:57,075 INFO L226 Difference]: Without dead ends: 399 [2024-09-12 20:01:57,075 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-09-12 20:01:57,076 INFO L434 NwaCegarLoop]: 135 mSDtfsCounter, 463 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 28 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:57,076 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1088 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 303 Invalid, 6 Unknown, 0 Unchecked, 24.4s Time] [2024-09-12 20:01:57,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-09-12 20:01:57,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 307. [2024-09-12 20:01:57,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 210 states have (on average 1.6857142857142857) internal successors, (354), 270 states have internal predecessors, (354), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (32), 26 states have call predecessors, (32), 25 states have call successors, (32) [2024-09-12 20:01:57,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 414 transitions. [2024-09-12 20:01:57,135 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 414 transitions. Word has length 35 [2024-09-12 20:01:57,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:57,135 INFO L474 AbstractCegarLoop]: Abstraction has 307 states and 414 transitions. [2024-09-12 20:01:57,135 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 20:01:57,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:57,136 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 414 transitions. [2024-09-12 20:01:57,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-12 20:01:57,136 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:57,137 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:57,155 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 20:01:57,340 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:57,341 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_33_to_48_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:01:57,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:57,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1517713676, now seen corresponding path program 1 times [2024-09-12 20:01:57,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:57,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677788270] [2024-09-12 20:01:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:57,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:57,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871549253] [2024-09-12 20:01:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:57,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:57,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:57,368 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:57,369 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 20:01:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:57,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 20:01:57,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:57,522 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 [2024-09-12 20:01:57,666 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 [2024-09-12 20:01:57,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 20:01:57,950 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 29 treesize of output 25 [2024-09-12 20:01:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:01:57,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:01:58,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:58,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677788270] [2024-09-12 20:01:58,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:58,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871549253] [2024-09-12 20:01:58,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871549253] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:01:58,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:01:58,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-09-12 20:01:58,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443993424] [2024-09-12 20:01:58,486 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:01:58,487 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 20:01:58,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:58,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 20:01:58,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-09-12 20:01:58,488 INFO L87 Difference]: Start difference. First operand 307 states and 414 transitions. Second operand has 13 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 20:02:02,506 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] [2024-09-12 20:02:03,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:03,390 INFO L93 Difference]: Finished difference Result 399 states and 465 transitions. [2024-09-12 20:02:03,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 20:02:03,390 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2024-09-12 20:02:03,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:03,393 INFO L225 Difference]: With dead ends: 399 [2024-09-12 20:02:03,393 INFO L226 Difference]: Without dead ends: 398 [2024-09-12 20:02:03,394 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-09-12 20:02:03,394 INFO L434 NwaCegarLoop]: 136 mSDtfsCounter, 570 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:03,394 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1153 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 336 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-09-12 20:02:03,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-09-12 20:02:03,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 307. [2024-09-12 20:02:03,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 210 states have (on average 1.6761904761904762) internal successors, (352), 270 states have internal predecessors, (352), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (32), 26 states have call predecessors, (32), 25 states have call successors, (32) [2024-09-12 20:02:03,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 412 transitions. [2024-09-12 20:02:03,457 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 412 transitions. Word has length 36 [2024-09-12 20:02:03,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:03,458 INFO L474 AbstractCegarLoop]: Abstraction has 307 states and 412 transitions. [2024-09-12 20:02:03,458 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 20:02:03,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:03,458 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 412 transitions. [2024-09-12 20:02:03,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-12 20:02:03,459 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:03,459 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:03,474 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-12 20:02:03,663 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-12 20:02:03,664 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_33_to_48_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:03,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:03,664 INFO L85 PathProgramCache]: Analyzing trace with hash 195516425, now seen corresponding path program 1 times [2024-09-12 20:02:03,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:03,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574138697] [2024-09-12 20:02:03,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:03,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:03,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095442651] [2024-09-12 20:02:03,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:03,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:03,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:03,693 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:03,695 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 20:02:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:03,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 20:02:03,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:03,843 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 [2024-09-12 20:02:03,904 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 [2024-09-12 20:02:03,911 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 [2024-09-12 20:02:04,087 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 [2024-09-12 20:02:04,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:04,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:04,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:04,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574138697] [2024-09-12 20:02:04,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:04,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095442651] [2024-09-12 20:02:04,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095442651] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:04,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:04,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 20:02:04,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012525182] [2024-09-12 20:02:04,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:04,108 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 20:02:04,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:04,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 20:02:04,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:02:04,109 INFO L87 Difference]: Start difference. First operand 307 states and 412 transitions. Second operand has 10 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:02:04,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:04,718 INFO L93 Difference]: Finished difference Result 394 states and 459 transitions. [2024-09-12 20:02:04,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 20:02:04,719 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2024-09-12 20:02:04,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:04,721 INFO L225 Difference]: With dead ends: 394 [2024-09-12 20:02:04,721 INFO L226 Difference]: Without dead ends: 393 [2024-09-12 20:02:04,722 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-09-12 20:02:04,723 INFO L434 NwaCegarLoop]: 130 mSDtfsCounter, 513 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:04,724 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 850 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:02:04,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-09-12 20:02:04,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 307. [2024-09-12 20:02:04,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 210 states have (on average 1.6666666666666667) internal successors, (350), 270 states have internal predecessors, (350), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (32), 26 states have call predecessors, (32), 25 states have call successors, (32) [2024-09-12 20:02:04,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 410 transitions. [2024-09-12 20:02:04,804 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 410 transitions. Word has length 37 [2024-09-12 20:02:04,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:04,804 INFO L474 AbstractCegarLoop]: Abstraction has 307 states and 410 transitions. [2024-09-12 20:02:04,804 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:02:04,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:04,805 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 410 transitions. [2024-09-12 20:02:04,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-12 20:02:04,805 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:04,805 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:04,823 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-12 20:02:05,006 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 20:02:05,007 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_33_to_48_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:05,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:05,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1766042006, now seen corresponding path program 1 times [2024-09-12 20:02:05,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:05,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889349001] [2024-09-12 20:02:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:05,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:05,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146920090] [2024-09-12 20:02:05,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:05,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:05,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:05,049 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:05,051 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 20:02:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:05,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-12 20:02:05,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:05,177 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 [2024-09-12 20:02:05,221 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 [2024-09-12 20:02:05,225 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 [2024-09-12 20:02:05,403 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 [2024-09-12 20:02:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:05,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:05,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:05,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889349001] [2024-09-12 20:02:05,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:05,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146920090] [2024-09-12 20:02:05,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146920090] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:05,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:05,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 20:02:05,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245584870] [2024-09-12 20:02:05,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:05,424 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 20:02:05,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:05,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 20:02:05,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:02:05,425 INFO L87 Difference]: Start difference. First operand 307 states and 410 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:02:06,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:06,090 INFO L93 Difference]: Finished difference Result 393 states and 457 transitions. [2024-09-12 20:02:06,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 20:02:06,090 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2024-09-12 20:02:06,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:06,093 INFO L225 Difference]: With dead ends: 393 [2024-09-12 20:02:06,093 INFO L226 Difference]: Without dead ends: 392 [2024-09-12 20:02:06,093 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-09-12 20:02:06,093 INFO L434 NwaCegarLoop]: 131 mSDtfsCounter, 363 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:06,094 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 897 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:02:06,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-12 20:02:06,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 307. [2024-09-12 20:02:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 210 states have (on average 1.6571428571428573) internal successors, (348), 270 states have internal predecessors, (348), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (32), 26 states have call predecessors, (32), 25 states have call successors, (32) [2024-09-12 20:02:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 408 transitions. [2024-09-12 20:02:06,191 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 408 transitions. Word has length 38 [2024-09-12 20:02:06,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:06,192 INFO L474 AbstractCegarLoop]: Abstraction has 307 states and 408 transitions. [2024-09-12 20:02:06,192 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:02:06,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:06,192 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 408 transitions. [2024-09-12 20:02:06,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-12 20:02:06,195 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:06,195 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:06,212 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-12 20:02:06,396 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:06,396 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:06,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:06,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1710310910, now seen corresponding path program 1 times [2024-09-12 20:02:06,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:06,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965898663] [2024-09-12 20:02:06,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:06,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:06,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647832923] [2024-09-12 20:02:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:06,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:06,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:06,437 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:06,439 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 20:02:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:06,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-09-12 20:02:06,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:06,576 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 [2024-09-12 20:02:06,580 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 [2024-09-12 20:02:06,585 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 [2024-09-12 20:02:06,590 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 [2024-09-12 20:02:06,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:02:06,748 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 [2024-09-12 20:02:06,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:06,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:02:06,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:06,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965898663] [2024-09-12 20:02:06,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:06,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647832923] [2024-09-12 20:02:06,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647832923] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:02:06,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:02:06,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-12 20:02:06,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377977239] [2024-09-12 20:02:06,967 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:02:06,967 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 20:02:06,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:06,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 20:02:06,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:02:06,968 INFO L87 Difference]: Start difference. First operand 307 states and 408 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:02:07,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:07,522 INFO L93 Difference]: Finished difference Result 368 states and 426 transitions. [2024-09-12 20:02:07,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 20:02:07,523 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2024-09-12 20:02:07,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:07,525 INFO L225 Difference]: With dead ends: 368 [2024-09-12 20:02:07,525 INFO L226 Difference]: Without dead ends: 366 [2024-09-12 20:02:07,526 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-09-12 20:02:07,529 INFO L434 NwaCegarLoop]: 134 mSDtfsCounter, 181 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:07,530 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 1049 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:02:07,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-09-12 20:02:07,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 311. [2024-09-12 20:02:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 213 states have (on average 1.647887323943662) internal successors, (351), 273 states have internal predecessors, (351), 28 states have call successors, (28), 12 states have call predecessors, (28), 13 states have return successors, (32), 26 states have call predecessors, (32), 25 states have call successors, (32) [2024-09-12 20:02:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 411 transitions. [2024-09-12 20:02:07,605 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 411 transitions. Word has length 42 [2024-09-12 20:02:07,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:07,605 INFO L474 AbstractCegarLoop]: Abstraction has 311 states and 411 transitions. [2024-09-12 20:02:07,605 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:02:07,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:07,605 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 411 transitions. [2024-09-12 20:02:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-12 20:02:07,606 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:07,606 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:07,624 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-12 20:02:07,806 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-12 20:02:07,807 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_33_to_48_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:07,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:07,807 INFO L85 PathProgramCache]: Analyzing trace with hash 680243525, now seen corresponding path program 1 times [2024-09-12 20:02:07,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:07,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594191569] [2024-09-12 20:02:07,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:07,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:07,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525262727] [2024-09-12 20:02:07,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:07,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:07,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:07,860 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:07,861 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 20:02:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:07,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 20:02:08,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:08,009 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 [2024-09-12 20:02:08,049 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 [2024-09-12 20:02:08,238 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 [2024-09-12 20:02:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:08,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:02:08,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:08,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594191569] [2024-09-12 20:02:08,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:08,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525262727] [2024-09-12 20:02:08,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525262727] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:02:08,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:02:08,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-09-12 20:02:08,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279910059] [2024-09-12 20:02:08,307 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:02:08,308 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 20:02:08,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:08,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 20:02:08,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-09-12 20:02:08,308 INFO L87 Difference]: Start difference. First operand 311 states and 411 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 11 states have internal predecessors, (30), 5 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 20:02:12,336 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] [2024-09-12 20:02:12,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:12,859 INFO L93 Difference]: Finished difference Result 473 states and 568 transitions. [2024-09-12 20:02:12,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 20:02:12,859 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 11 states have internal predecessors, (30), 5 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 45 [2024-09-12 20:02:12,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:12,862 INFO L225 Difference]: With dead ends: 473 [2024-09-12 20:02:12,862 INFO L226 Difference]: Without dead ends: 472 [2024-09-12 20:02:12,863 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-09-12 20:02:12,863 INFO L434 NwaCegarLoop]: 140 mSDtfsCounter, 403 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:12,863 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1158 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 318 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-09-12 20:02:12,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-09-12 20:02:13,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 391. [2024-09-12 20:02:13,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 282 states have (on average 1.673758865248227) internal successors, (472), 342 states have internal predecessors, (472), 36 states have call successors, (36), 15 states have call predecessors, (36), 16 states have return successors, (38), 34 states have call predecessors, (38), 31 states have call successors, (38) [2024-09-12 20:02:13,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 546 transitions. [2024-09-12 20:02:13,005 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 546 transitions. Word has length 45 [2024-09-12 20:02:13,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:13,006 INFO L474 AbstractCegarLoop]: Abstraction has 391 states and 546 transitions. [2024-09-12 20:02:13,006 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 11 states have internal predecessors, (30), 5 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 20:02:13,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:13,006 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 546 transitions. [2024-09-12 20:02:13,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-12 20:02:13,007 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:13,007 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:13,024 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-12 20:02:13,207 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 20:02:13,208 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_33_to_48_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:13,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:13,208 INFO L85 PathProgramCache]: Analyzing trace with hash -387287072, now seen corresponding path program 1 times [2024-09-12 20:02:13,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:13,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174634501] [2024-09-12 20:02:13,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:13,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:13,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694241029] [2024-09-12 20:02:13,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:13,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:13,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:13,242 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:13,244 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-12 20:02:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:13,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 20:02:13,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:13,390 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 [2024-09-12 20:02:13,450 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 [2024-09-12 20:02:13,653 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 [2024-09-12 20:02:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:13,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:02:13,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:13,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174634501] [2024-09-12 20:02:13,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:13,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694241029] [2024-09-12 20:02:13,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694241029] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:02:13,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:02:13,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-09-12 20:02:13,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538841538] [2024-09-12 20:02:13,990 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:02:13,991 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 20:02:13,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:13,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 20:02:13,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-09-12 20:02:13,992 INFO L87 Difference]: Start difference. First operand 391 states and 546 transitions. Second operand has 12 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 11 states have internal predecessors, (31), 5 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 20:02:18,011 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] [2024-09-12 20:02:18,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:18,663 INFO L93 Difference]: Finished difference Result 472 states and 566 transitions. [2024-09-12 20:02:18,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 20:02:18,663 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 11 states have internal predecessors, (31), 5 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 46 [2024-09-12 20:02:18,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:18,666 INFO L225 Difference]: With dead ends: 472 [2024-09-12 20:02:18,666 INFO L226 Difference]: Without dead ends: 471 [2024-09-12 20:02:18,666 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-09-12 20:02:18,667 INFO L434 NwaCegarLoop]: 141 mSDtfsCounter, 490 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:18,667 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 1054 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 284 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-09-12 20:02:18,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-09-12 20:02:18,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 391. [2024-09-12 20:02:18,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 282 states have (on average 1.6666666666666667) internal successors, (470), 342 states have internal predecessors, (470), 36 states have call successors, (36), 15 states have call predecessors, (36), 16 states have return successors, (38), 34 states have call predecessors, (38), 31 states have call successors, (38) [2024-09-12 20:02:18,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 544 transitions. [2024-09-12 20:02:18,770 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 544 transitions. Word has length 46 [2024-09-12 20:02:18,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:18,770 INFO L474 AbstractCegarLoop]: Abstraction has 391 states and 544 transitions. [2024-09-12 20:02:18,770 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 11 states have internal predecessors, (31), 5 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 20:02:18,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:18,771 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 544 transitions. [2024-09-12 20:02:18,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-12 20:02:18,771 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:18,771 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:18,788 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-12 20:02:18,972 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 20:02:18,972 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_33_to_48_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:18,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:18,973 INFO L85 PathProgramCache]: Analyzing trace with hash 879002791, now seen corresponding path program 1 times [2024-09-12 20:02:18,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:18,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843572254] [2024-09-12 20:02:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:18,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:19,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741509662] [2024-09-12 20:02:19,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:19,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:19,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:19,021 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:19,022 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-12 20:02:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:19,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-12 20:02:19,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:19,160 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 [2024-09-12 20:02:19,180 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 [2024-09-12 20:02:19,359 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 [2024-09-12 20:02:19,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 20:02:19,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:19,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:19,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843572254] [2024-09-12 20:02:19,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:19,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741509662] [2024-09-12 20:02:19,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741509662] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:19,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:19,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-09-12 20:02:19,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492050251] [2024-09-12 20:02:19,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:19,377 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 20:02:19,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:19,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 20:02:19,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:02:19,378 INFO L87 Difference]: Start difference. First operand 391 states and 544 transitions. Second operand has 11 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:02:19,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:19,852 INFO L93 Difference]: Finished difference Result 479 states and 572 transitions. [2024-09-12 20:02:19,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 20:02:19,853 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 47 [2024-09-12 20:02:19,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:19,855 INFO L225 Difference]: With dead ends: 479 [2024-09-12 20:02:19,855 INFO L226 Difference]: Without dead ends: 478 [2024-09-12 20:02:19,856 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-12 20:02:19,856 INFO L434 NwaCegarLoop]: 138 mSDtfsCounter, 268 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:19,858 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 1248 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:02:19,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2024-09-12 20:02:19,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 391. [2024-09-12 20:02:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 282 states have (on average 1.6595744680851063) internal successors, (468), 342 states have internal predecessors, (468), 36 states have call successors, (36), 15 states have call predecessors, (36), 16 states have return successors, (38), 34 states have call predecessors, (38), 31 states have call successors, (38) [2024-09-12 20:02:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 542 transitions. [2024-09-12 20:02:19,983 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 542 transitions. Word has length 47 [2024-09-12 20:02:19,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:19,983 INFO L474 AbstractCegarLoop]: Abstraction has 391 states and 542 transitions. [2024-09-12 20:02:19,983 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:02:19,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:19,984 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 542 transitions. [2024-09-12 20:02:19,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 20:02:19,984 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:19,984 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:19,998 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-12 20:02:20,184 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 20:02:20,185 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_33_to_48_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:20,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:20,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1479282882, now seen corresponding path program 1 times [2024-09-12 20:02:20,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:20,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351577744] [2024-09-12 20:02:20,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:20,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:20,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375473999] [2024-09-12 20:02:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:20,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:20,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:20,224 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:20,235 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-12 20:02:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:20,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 20:02:20,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:20,403 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 [2024-09-12 20:02:20,448 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 [2024-09-12 20:02:20,631 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 [2024-09-12 20:02:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 20:02:20,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:20,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:20,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351577744] [2024-09-12 20:02:20,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:20,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375473999] [2024-09-12 20:02:20,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375473999] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:20,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:20,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 20:02:20,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920852658] [2024-09-12 20:02:20,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:20,643 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 20:02:20,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:20,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 20:02:20,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:02:20,643 INFO L87 Difference]: Start difference. First operand 391 states and 542 transitions. Second operand has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:02:21,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:21,041 INFO L93 Difference]: Finished difference Result 478 states and 570 transitions. [2024-09-12 20:02:21,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 20:02:21,042 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2024-09-12 20:02:21,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:21,044 INFO L225 Difference]: With dead ends: 478 [2024-09-12 20:02:21,044 INFO L226 Difference]: Without dead ends: 477 [2024-09-12 20:02:21,045 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:02:21,045 INFO L434 NwaCegarLoop]: 139 mSDtfsCounter, 411 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:21,045 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 774 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:02:21,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-09-12 20:02:21,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 391. [2024-09-12 20:02:21,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 282 states have (on average 1.6524822695035462) internal successors, (466), 342 states have internal predecessors, (466), 36 states have call successors, (36), 15 states have call predecessors, (36), 16 states have return successors, (38), 34 states have call predecessors, (38), 31 states have call successors, (38) [2024-09-12 20:02:21,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 540 transitions. [2024-09-12 20:02:21,171 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 540 transitions. Word has length 48 [2024-09-12 20:02:21,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:21,171 INFO L474 AbstractCegarLoop]: Abstraction has 391 states and 540 transitions. [2024-09-12 20:02:21,172 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:02:21,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:21,172 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 540 transitions. [2024-09-12 20:02:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-12 20:02:21,172 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:21,173 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:21,191 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-12 20:02:21,376 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:21,377 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_33_to_48_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:21,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:21,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1386870775, now seen corresponding path program 1 times [2024-09-12 20:02:21,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:21,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610325553] [2024-09-12 20:02:21,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:21,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:21,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126073858] [2024-09-12 20:02:21,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:21,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:21,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:21,405 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:21,406 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-12 20:02:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:21,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 20:02:21,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:21,562 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 [2024-09-12 20:02:21,602 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 [2024-09-12 20:02:21,607 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 [2024-09-12 20:02:21,910 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 [2024-09-12 20:02:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 20:02:21,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:21,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:21,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610325553] [2024-09-12 20:02:21,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:21,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126073858] [2024-09-12 20:02:21,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126073858] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:21,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:21,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 20:02:21,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418737838] [2024-09-12 20:02:21,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:21,934 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 20:02:21,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:21,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 20:02:21,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:02:21,934 INFO L87 Difference]: Start difference. First operand 391 states and 540 transitions. Second operand has 10 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:02:22,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:22,646 INFO L93 Difference]: Finished difference Result 469 states and 560 transitions. [2024-09-12 20:02:22,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 20:02:22,646 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2024-09-12 20:02:22,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:22,648 INFO L225 Difference]: With dead ends: 469 [2024-09-12 20:02:22,648 INFO L226 Difference]: Without dead ends: 468 [2024-09-12 20:02:22,649 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-09-12 20:02:22,649 INFO L434 NwaCegarLoop]: 134 mSDtfsCounter, 425 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:22,649 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 913 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:02:22,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-09-12 20:02:22,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 391. [2024-09-12 20:02:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 282 states have (on average 1.6453900709219857) internal successors, (464), 342 states have internal predecessors, (464), 36 states have call successors, (36), 15 states have call predecessors, (36), 16 states have return successors, (38), 34 states have call predecessors, (38), 31 states have call successors, (38) [2024-09-12 20:02:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 538 transitions. [2024-09-12 20:02:22,825 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 538 transitions. Word has length 49 [2024-09-12 20:02:22,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:22,826 INFO L474 AbstractCegarLoop]: Abstraction has 391 states and 538 transitions. [2024-09-12 20:02:22,826 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:02:22,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:22,826 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 538 transitions. [2024-09-12 20:02:22,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-12 20:02:22,827 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:22,827 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:22,845 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-12 20:02:23,027 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 20:02:23,028 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_33_to_48_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:23,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:23,028 INFO L85 PathProgramCache]: Analyzing trace with hash -43320924, now seen corresponding path program 1 times [2024-09-12 20:02:23,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:23,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618949376] [2024-09-12 20:02:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:23,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:23,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629032063] [2024-09-12 20:02:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:23,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:23,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:23,086 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:23,089 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-12 20:02:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:23,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 20:02:23,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:23,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:23,277 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 [2024-09-12 20:02:23,284 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 [2024-09-12 20:02:23,525 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 [2024-09-12 20:02:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 20:02:23,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:23,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:23,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618949376] [2024-09-12 20:02:23,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:23,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629032063] [2024-09-12 20:02:23,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629032063] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:23,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:23,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 20:02:23,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384086604] [2024-09-12 20:02:23,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:23,553 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 20:02:23,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:23,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 20:02:23,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:02:23,554 INFO L87 Difference]: Start difference. First operand 391 states and 538 transitions. Second operand has 10 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:02:24,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:24,184 INFO L93 Difference]: Finished difference Result 468 states and 558 transitions. [2024-09-12 20:02:24,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 20:02:24,184 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2024-09-12 20:02:24,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:24,186 INFO L225 Difference]: With dead ends: 468 [2024-09-12 20:02:24,187 INFO L226 Difference]: Without dead ends: 467 [2024-09-12 20:02:24,187 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-09-12 20:02:24,187 INFO L434 NwaCegarLoop]: 135 mSDtfsCounter, 453 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:24,188 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 802 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:02:24,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-09-12 20:02:24,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 391. [2024-09-12 20:02:24,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 282 states have (on average 1.6382978723404256) internal successors, (462), 342 states have internal predecessors, (462), 36 states have call successors, (36), 15 states have call predecessors, (36), 16 states have return successors, (38), 34 states have call predecessors, (38), 31 states have call successors, (38) [2024-09-12 20:02:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 536 transitions. [2024-09-12 20:02:24,334 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 536 transitions. Word has length 50 [2024-09-12 20:02:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:24,335 INFO L474 AbstractCegarLoop]: Abstraction has 391 states and 536 transitions. [2024-09-12 20:02:24,335 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:02:24,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:24,335 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 536 transitions. [2024-09-12 20:02:24,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-12 20:02:24,335 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:24,336 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:24,350 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-12 20:02:24,536 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:24,536 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:24,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:24,537 INFO L85 PathProgramCache]: Analyzing trace with hash -155793462, now seen corresponding path program 1 times [2024-09-12 20:02:24,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:24,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739150596] [2024-09-12 20:02:24,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:24,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:24,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191446604] [2024-09-12 20:02:24,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:24,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:24,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:24,573 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:24,576 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-12 20:02:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:24,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-09-12 20:02:24,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:24,725 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 [2024-09-12 20:02:24,731 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 [2024-09-12 20:02:24,736 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 [2024-09-12 20:02:24,743 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 [2024-09-12 20:02:24,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:02:24,986 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 [2024-09-12 20:02:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 20:02:25,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:02:25,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:25,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739150596] [2024-09-12 20:02:25,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:25,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191446604] [2024-09-12 20:02:25,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191446604] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:02:25,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:02:25,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-12 20:02:25,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535140602] [2024-09-12 20:02:25,161 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:02:25,161 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 20:02:25,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:25,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 20:02:25,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:02:25,162 INFO L87 Difference]: Start difference. First operand 391 states and 536 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 20:02:25,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:25,870 INFO L93 Difference]: Finished difference Result 471 states and 557 transitions. [2024-09-12 20:02:25,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 20:02:25,871 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2024-09-12 20:02:25,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:25,873 INFO L225 Difference]: With dead ends: 471 [2024-09-12 20:02:25,873 INFO L226 Difference]: Without dead ends: 469 [2024-09-12 20:02:25,873 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-09-12 20:02:25,874 INFO L434 NwaCegarLoop]: 133 mSDtfsCounter, 289 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:25,874 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 964 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:02:25,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2024-09-12 20:02:26,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 399. [2024-09-12 20:02:26,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 288 states have (on average 1.625) internal successors, (468), 348 states have internal predecessors, (468), 36 states have call successors, (36), 17 states have call predecessors, (36), 18 states have return successors, (38), 34 states have call predecessors, (38), 31 states have call successors, (38) [2024-09-12 20:02:26,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 542 transitions. [2024-09-12 20:02:26,042 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 542 transitions. Word has length 54 [2024-09-12 20:02:26,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:26,042 INFO L474 AbstractCegarLoop]: Abstraction has 399 states and 542 transitions. [2024-09-12 20:02:26,042 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 20:02:26,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:26,043 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 542 transitions. [2024-09-12 20:02:26,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-12 20:02:26,043 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:26,044 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:26,056 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-12 20:02:26,244 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:26,244 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_33_to_48_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:26,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:26,245 INFO L85 PathProgramCache]: Analyzing trace with hash -735637889, now seen corresponding path program 1 times [2024-09-12 20:02:26,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:26,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958592027] [2024-09-12 20:02:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:26,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:27,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:27,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:02:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:27,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:02:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:27,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:02:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:27,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 20:02:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:27,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 20:02:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:02:27,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:27,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958592027] [2024-09-12 20:02:27,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958592027] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:27,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:27,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 20:02:27,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357527757] [2024-09-12 20:02:27,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:27,022 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 20:02:27,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:27,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 20:02:27,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 20:02:27,023 INFO L87 Difference]: Start difference. First operand 399 states and 542 transitions. Second operand has 5 states, 3 states have (on average 12.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:02:27,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:27,299 INFO L93 Difference]: Finished difference Result 399 states and 542 transitions. [2024-09-12 20:02:27,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 20:02:27,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 12.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2024-09-12 20:02:27,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:27,302 INFO L225 Difference]: With dead ends: 399 [2024-09-12 20:02:27,303 INFO L226 Difference]: Without dead ends: 398 [2024-09-12 20:02:27,303 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 20:02:27,304 INFO L434 NwaCegarLoop]: 154 mSDtfsCounter, 1 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:27,305 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 599 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:02:27,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-09-12 20:02:27,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2024-09-12 20:02:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 288 states have (on average 1.6180555555555556) internal successors, (466), 347 states have internal predecessors, (466), 36 states have call successors, (36), 17 states have call predecessors, (36), 18 states have return successors, (38), 34 states have call predecessors, (38), 31 states have call successors, (38) [2024-09-12 20:02:27,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 540 transitions. [2024-09-12 20:02:27,505 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 540 transitions. Word has length 59 [2024-09-12 20:02:27,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:27,506 INFO L474 AbstractCegarLoop]: Abstraction has 398 states and 540 transitions. [2024-09-12 20:02:27,506 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 12.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:02:27,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:27,506 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 540 transitions. [2024-09-12 20:02:27,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-12 20:02:27,507 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:27,507 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:27,507 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-09-12 20:02:27,507 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_33_to_48_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:27,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:27,508 INFO L85 PathProgramCache]: Analyzing trace with hash -735638337, now seen corresponding path program 1 times [2024-09-12 20:02:27,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:27,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827881604] [2024-09-12 20:02:27,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:27,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:28,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:28,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:02:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:28,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:02:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:28,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:02:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:28,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 20:02:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:28,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 20:02:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:28,064 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:02:28,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:28,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827881604] [2024-09-12 20:02:28,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827881604] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:28,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:28,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 20:02:28,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752242299] [2024-09-12 20:02:28,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:28,065 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 20:02:28,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:28,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 20:02:28,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 20:02:28,066 INFO L87 Difference]: Start difference. First operand 398 states and 540 transitions. Second operand has 5 states, 3 states have (on average 12.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:02:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:28,310 INFO L93 Difference]: Finished difference Result 398 states and 540 transitions. [2024-09-12 20:02:28,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 20:02:28,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 12.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2024-09-12 20:02:28,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:28,313 INFO L225 Difference]: With dead ends: 398 [2024-09-12 20:02:28,313 INFO L226 Difference]: Without dead ends: 397 [2024-09-12 20:02:28,314 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 20:02:28,314 INFO L434 NwaCegarLoop]: 153 mSDtfsCounter, 1 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:28,314 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 595 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 20:02:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-09-12 20:02:28,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2024-09-12 20:02:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 288 states have (on average 1.6111111111111112) internal successors, (464), 346 states have internal predecessors, (464), 36 states have call successors, (36), 17 states have call predecessors, (36), 18 states have return successors, (38), 34 states have call predecessors, (38), 31 states have call successors, (38) [2024-09-12 20:02:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 538 transitions. [2024-09-12 20:02:28,518 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 538 transitions. Word has length 59 [2024-09-12 20:02:28,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:28,518 INFO L474 AbstractCegarLoop]: Abstraction has 397 states and 538 transitions. [2024-09-12 20:02:28,518 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 12.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:02:28,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:28,519 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 538 transitions. [2024-09-12 20:02:28,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-12 20:02:28,520 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:28,520 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:28,520 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-09-12 20:02:28,521 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_33_to_48_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:28,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:28,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1329937911, now seen corresponding path program 1 times [2024-09-12 20:02:28,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:28,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175661977] [2024-09-12 20:02:28,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:28,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:29,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:29,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:02:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:29,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:02:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:29,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:02:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:29,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 20:02:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:29,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 20:02:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:02:29,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:29,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175661977] [2024-09-12 20:02:29,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175661977] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:29,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:29,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:02:29,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197539351] [2024-09-12 20:02:29,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:29,102 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:02:29,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:29,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:02:29,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:02:29,103 INFO L87 Difference]: Start difference. First operand 397 states and 538 transitions. Second operand has 8 states, 5 states have (on average 7.4) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 20:02:29,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:29,545 INFO L93 Difference]: Finished difference Result 403 states and 544 transitions. [2024-09-12 20:02:29,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:02:29,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 7.4) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 60 [2024-09-12 20:02:29,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:29,548 INFO L225 Difference]: With dead ends: 403 [2024-09-12 20:02:29,549 INFO L226 Difference]: Without dead ends: 402 [2024-09-12 20:02:29,549 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:02:29,550 INFO L434 NwaCegarLoop]: 142 mSDtfsCounter, 79 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:29,550 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 906 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:02:29,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-09-12 20:02:29,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 399. [2024-09-12 20:02:29,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 290 states have (on average 1.606896551724138) internal successors, (466), 348 states have internal predecessors, (466), 36 states have call successors, (36), 17 states have call predecessors, (36), 18 states have return successors, (38), 34 states have call predecessors, (38), 31 states have call successors, (38) [2024-09-12 20:02:29,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 540 transitions. [2024-09-12 20:02:29,719 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 540 transitions. Word has length 60 [2024-09-12 20:02:29,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:29,719 INFO L474 AbstractCegarLoop]: Abstraction has 399 states and 540 transitions. [2024-09-12 20:02:29,719 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 7.4) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 20:02:29,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:29,720 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 540 transitions. [2024-09-12 20:02:29,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-12 20:02:29,720 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:29,720 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:29,720 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-09-12 20:02:29,720 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_33_to_48_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:29,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:29,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1329951813, now seen corresponding path program 1 times [2024-09-12 20:02:29,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:29,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410661659] [2024-09-12 20:02:29,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:29,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:30,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:30,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:02:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:30,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:02:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:30,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:02:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:30,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 20:02:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:30,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 20:02:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:02:30,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:30,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410661659] [2024-09-12 20:02:30,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410661659] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:30,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:30,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:02:30,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023163845] [2024-09-12 20:02:30,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:30,194 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:02:30,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:30,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:02:30,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:02:30,195 INFO L87 Difference]: Start difference. First operand 399 states and 540 transitions. Second operand has 8 states, 5 states have (on average 7.4) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 20:02:30,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:30,601 INFO L93 Difference]: Finished difference Result 402 states and 543 transitions. [2024-09-12 20:02:30,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:02:30,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 7.4) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 60 [2024-09-12 20:02:30,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:30,604 INFO L225 Difference]: With dead ends: 402 [2024-09-12 20:02:30,604 INFO L226 Difference]: Without dead ends: 401 [2024-09-12 20:02:30,605 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:02:30,606 INFO L434 NwaCegarLoop]: 142 mSDtfsCounter, 77 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:30,609 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 906 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:02:30,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-09-12 20:02:30,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2024-09-12 20:02:30,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 292 states have (on average 1.6027397260273972) internal successors, (468), 350 states have internal predecessors, (468), 36 states have call successors, (36), 17 states have call predecessors, (36), 18 states have return successors, (38), 34 states have call predecessors, (38), 31 states have call successors, (38) [2024-09-12 20:02:30,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 542 transitions. [2024-09-12 20:02:30,878 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 542 transitions. Word has length 60 [2024-09-12 20:02:30,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:30,878 INFO L474 AbstractCegarLoop]: Abstraction has 401 states and 542 transitions. [2024-09-12 20:02:30,879 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 7.4) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 20:02:30,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:30,879 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 542 transitions. [2024-09-12 20:02:30,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-12 20:02:30,879 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:30,879 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:30,880 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-09-12 20:02:30,880 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:30,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:30,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1721250588, now seen corresponding path program 1 times [2024-09-12 20:02:30,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:30,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568095024] [2024-09-12 20:02:30,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:30,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:31,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:31,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:02:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:31,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:02:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:31,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 20:02:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:31,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:02:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:31,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 20:02:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:31,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 20:02:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:02:31,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:31,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568095024] [2024-09-12 20:02:31,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568095024] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:31,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:31,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 20:02:31,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037509208] [2024-09-12 20:02:31,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:31,327 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 20:02:31,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:31,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 20:02:31,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:02:31,328 INFO L87 Difference]: Start difference. First operand 401 states and 542 transitions. Second operand has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 20:02:31,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:31,975 INFO L93 Difference]: Finished difference Result 403 states and 544 transitions. [2024-09-12 20:02:31,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 20:02:31,976 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2024-09-12 20:02:31,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:31,978 INFO L225 Difference]: With dead ends: 403 [2024-09-12 20:02:31,978 INFO L226 Difference]: Without dead ends: 402 [2024-09-12 20:02:31,979 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-09-12 20:02:31,981 INFO L434 NwaCegarLoop]: 125 mSDtfsCounter, 110 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:31,981 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 812 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:02:31,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-09-12 20:02:32,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2024-09-12 20:02:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 293 states have (on average 1.5870307167235496) internal successors, (465), 350 states have internal predecessors, (465), 36 states have call successors, (36), 17 states have call predecessors, (36), 19 states have return successors, (39), 34 states have call predecessors, (39), 31 states have call successors, (39) [2024-09-12 20:02:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 540 transitions. [2024-09-12 20:02:32,217 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 540 transitions. Word has length 61 [2024-09-12 20:02:32,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:32,218 INFO L474 AbstractCegarLoop]: Abstraction has 402 states and 540 transitions. [2024-09-12 20:02:32,218 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 20:02:32,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:32,219 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 540 transitions. [2024-09-12 20:02:32,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-12 20:02:32,219 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:32,220 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:32,220 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-09-12 20:02:32,220 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_33_to_48_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:32,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:32,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1721597889, now seen corresponding path program 1 times [2024-09-12 20:02:32,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:32,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900217375] [2024-09-12 20:02:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:32,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:32,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:32,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:02:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:32,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:02:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:32,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:02:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:32,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 20:02:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:32,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 20:02:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:32,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:02:32,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:32,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900217375] [2024-09-12 20:02:32,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900217375] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:32,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:32,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:02:32,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504654342] [2024-09-12 20:02:32,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:32,532 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:02:32,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:32,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:02:32,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:02:32,533 INFO L87 Difference]: Start difference. First operand 402 states and 540 transitions. Second operand has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:02:32,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:32,901 INFO L93 Difference]: Finished difference Result 421 states and 548 transitions. [2024-09-12 20:02:32,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:02:32,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2024-09-12 20:02:32,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:32,905 INFO L225 Difference]: With dead ends: 421 [2024-09-12 20:02:32,905 INFO L226 Difference]: Without dead ends: 419 [2024-09-12 20:02:32,905 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:02:32,906 INFO L434 NwaCegarLoop]: 144 mSDtfsCounter, 72 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:32,906 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 687 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:02:32,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-09-12 20:02:33,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 404. [2024-09-12 20:02:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 295 states have (on average 1.583050847457627) internal successors, (467), 352 states have internal predecessors, (467), 36 states have call successors, (36), 17 states have call predecessors, (36), 19 states have return successors, (39), 34 states have call predecessors, (39), 31 states have call successors, (39) [2024-09-12 20:02:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 542 transitions. [2024-09-12 20:02:33,200 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 542 transitions. Word has length 61 [2024-09-12 20:02:33,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:33,200 INFO L474 AbstractCegarLoop]: Abstraction has 404 states and 542 transitions. [2024-09-12 20:02:33,200 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:02:33,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:33,200 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 542 transitions. [2024-09-12 20:02:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-12 20:02:33,201 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:33,201 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:33,201 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-09-12 20:02:33,201 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_33_to_48_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:33,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:33,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1721166913, now seen corresponding path program 1 times [2024-09-12 20:02:33,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:33,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138746377] [2024-09-12 20:02:33,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:33,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:33,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:33,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:02:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:33,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:02:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:33,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:02:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:33,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 20:02:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:33,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 20:02:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:33,502 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:02:33,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:33,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138746377] [2024-09-12 20:02:33,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138746377] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:33,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:33,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:02:33,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37162854] [2024-09-12 20:02:33,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:33,504 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:02:33,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:33,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:02:33,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:02:33,506 INFO L87 Difference]: Start difference. First operand 404 states and 542 transitions. Second operand has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:02:33,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:33,947 INFO L93 Difference]: Finished difference Result 439 states and 552 transitions. [2024-09-12 20:02:33,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:02:33,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2024-09-12 20:02:33,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:33,950 INFO L225 Difference]: With dead ends: 439 [2024-09-12 20:02:33,950 INFO L226 Difference]: Without dead ends: 437 [2024-09-12 20:02:33,950 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:02:33,951 INFO L434 NwaCegarLoop]: 148 mSDtfsCounter, 105 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:33,951 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 696 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:02:33,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-09-12 20:02:34,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 404. [2024-09-12 20:02:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 295 states have (on average 1.576271186440678) internal successors, (465), 352 states have internal predecessors, (465), 36 states have call successors, (36), 17 states have call predecessors, (36), 19 states have return successors, (39), 34 states have call predecessors, (39), 31 states have call successors, (39) [2024-09-12 20:02:34,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 540 transitions. [2024-09-12 20:02:34,163 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 540 transitions. Word has length 61 [2024-09-12 20:02:34,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:34,164 INFO L474 AbstractCegarLoop]: Abstraction has 404 states and 540 transitions. [2024-09-12 20:02:34,164 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:02:34,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:34,164 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 540 transitions. [2024-09-12 20:02:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-12 20:02:34,165 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:34,165 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:34,165 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-09-12 20:02:34,165 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:34,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:34,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1819160716, now seen corresponding path program 1 times [2024-09-12 20:02:34,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:34,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146032143] [2024-09-12 20:02:34,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:34,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:34,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:34,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:02:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:34,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:02:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:34,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 20:02:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:34,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:02:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:34,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 20:02:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:34,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 20:02:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:02:34,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:34,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146032143] [2024-09-12 20:02:34,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146032143] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:34,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:34,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 20:02:34,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366600678] [2024-09-12 20:02:34,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:34,552 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 20:02:34,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:34,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 20:02:34,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:02:34,553 INFO L87 Difference]: Start difference. First operand 404 states and 540 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 20:02:35,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:35,173 INFO L93 Difference]: Finished difference Result 404 states and 540 transitions. [2024-09-12 20:02:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 20:02:35,174 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-09-12 20:02:35,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:35,176 INFO L225 Difference]: With dead ends: 404 [2024-09-12 20:02:35,177 INFO L226 Difference]: Without dead ends: 403 [2024-09-12 20:02:35,177 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-09-12 20:02:35,177 INFO L434 NwaCegarLoop]: 125 mSDtfsCounter, 109 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:35,178 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 812 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:02:35,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-09-12 20:02:35,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2024-09-12 20:02:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 295 states have (on average 1.5627118644067797) internal successors, (461), 351 states have internal predecessors, (461), 36 states have call successors, (36), 17 states have call predecessors, (36), 19 states have return successors, (39), 34 states have call predecessors, (39), 31 states have call successors, (39) [2024-09-12 20:02:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 536 transitions. [2024-09-12 20:02:35,407 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 536 transitions. Word has length 62 [2024-09-12 20:02:35,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:35,408 INFO L474 AbstractCegarLoop]: Abstraction has 403 states and 536 transitions. [2024-09-12 20:02:35,408 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 20:02:35,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:35,408 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 536 transitions. [2024-09-12 20:02:35,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-12 20:02:35,409 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:35,409 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:35,409 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-09-12 20:02:35,410 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_33_to_48_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:35,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:35,410 INFO L85 PathProgramCache]: Analyzing trace with hash 893167875, now seen corresponding path program 1 times [2024-09-12 20:02:35,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:35,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172431234] [2024-09-12 20:02:35,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:35,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:35,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:35,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:02:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:35,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:02:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:35,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:02:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:35,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 20:02:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:35,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 20:02:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:02:35,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:35,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172431234] [2024-09-12 20:02:35,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172431234] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:35,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:35,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:02:35,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36076461] [2024-09-12 20:02:35,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:35,731 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:02:35,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:35,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:02:35,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:02:35,732 INFO L87 Difference]: Start difference. First operand 403 states and 536 transitions. Second operand has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:02:36,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:36,186 INFO L93 Difference]: Finished difference Result 445 states and 556 transitions. [2024-09-12 20:02:36,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:02:36,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2024-09-12 20:02:36,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:36,189 INFO L225 Difference]: With dead ends: 445 [2024-09-12 20:02:36,190 INFO L226 Difference]: Without dead ends: 443 [2024-09-12 20:02:36,190 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:02:36,191 INFO L434 NwaCegarLoop]: 148 mSDtfsCounter, 110 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:36,191 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 694 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:02:36,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-09-12 20:02:36,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 403. [2024-09-12 20:02:36,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 295 states have (on average 1.5559322033898304) internal successors, (459), 351 states have internal predecessors, (459), 36 states have call successors, (36), 17 states have call predecessors, (36), 19 states have return successors, (39), 34 states have call predecessors, (39), 31 states have call successors, (39) [2024-09-12 20:02:36,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 534 transitions. [2024-09-12 20:02:36,405 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 534 transitions. Word has length 63 [2024-09-12 20:02:36,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:36,405 INFO L474 AbstractCegarLoop]: Abstraction has 403 states and 534 transitions. [2024-09-12 20:02:36,405 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:02:36,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:36,406 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 534 transitions. [2024-09-12 20:02:36,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-12 20:02:36,406 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:36,406 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:36,406 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-09-12 20:02:36,407 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_33_to_48_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:36,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:36,407 INFO L85 PathProgramCache]: Analyzing trace with hash 478999491, now seen corresponding path program 1 times [2024-09-12 20:02:36,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:36,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292595691] [2024-09-12 20:02:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:36,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:36,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:36,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:02:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:36,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:02:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:36,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:02:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:36,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 20:02:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:36,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 20:02:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:02:36,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:36,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292595691] [2024-09-12 20:02:36,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292595691] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:36,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:36,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:02:36,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435084419] [2024-09-12 20:02:36,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:36,684 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:02:36,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:36,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:02:36,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:02:36,685 INFO L87 Difference]: Start difference. First operand 403 states and 534 transitions. Second operand has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:02:37,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:37,083 INFO L93 Difference]: Finished difference Result 419 states and 542 transitions. [2024-09-12 20:02:37,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:02:37,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2024-09-12 20:02:37,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:37,085 INFO L225 Difference]: With dead ends: 419 [2024-09-12 20:02:37,086 INFO L226 Difference]: Without dead ends: 417 [2024-09-12 20:02:37,086 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:02:37,089 INFO L434 NwaCegarLoop]: 144 mSDtfsCounter, 69 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:37,089 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 684 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:02:37,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-09-12 20:02:37,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 407. [2024-09-12 20:02:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 299 states have (on average 1.548494983277592) internal successors, (463), 355 states have internal predecessors, (463), 36 states have call successors, (36), 17 states have call predecessors, (36), 19 states have return successors, (39), 34 states have call predecessors, (39), 31 states have call successors, (39) [2024-09-12 20:02:37,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 538 transitions. [2024-09-12 20:02:37,320 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 538 transitions. Word has length 63 [2024-09-12 20:02:37,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:37,320 INFO L474 AbstractCegarLoop]: Abstraction has 407 states and 538 transitions. [2024-09-12 20:02:37,321 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:02:37,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:37,321 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 538 transitions. [2024-09-12 20:02:37,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-12 20:02:37,322 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:37,322 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:37,322 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-09-12 20:02:37,322 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:37,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:37,322 INFO L85 PathProgramCache]: Analyzing trace with hash 837735998, now seen corresponding path program 1 times [2024-09-12 20:02:37,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:37,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366773606] [2024-09-12 20:02:37,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:37,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:37,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:37,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:02:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:37,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:02:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:37,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 20:02:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:37,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:02:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:37,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 20:02:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:37,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 20:02:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:02:37,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:37,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366773606] [2024-09-12 20:02:37,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366773606] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:37,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:37,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-09-12 20:02:37,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814169856] [2024-09-12 20:02:37,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:37,809 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 20:02:37,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:37,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 20:02:37,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:02:37,812 INFO L87 Difference]: Start difference. First operand 407 states and 538 transitions. Second operand has 11 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 20:02:38,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:38,502 INFO L93 Difference]: Finished difference Result 425 states and 555 transitions. [2024-09-12 20:02:38,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 20:02:38,503 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-09-12 20:02:38,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:38,506 INFO L225 Difference]: With dead ends: 425 [2024-09-12 20:02:38,506 INFO L226 Difference]: Without dead ends: 423 [2024-09-12 20:02:38,506 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-09-12 20:02:38,507 INFO L434 NwaCegarLoop]: 124 mSDtfsCounter, 111 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:38,507 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1044 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:02:38,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-09-12 20:02:38,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2024-09-12 20:02:38,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 311 states have (on average 1.527331189710611) internal successors, (475), 367 states have internal predecessors, (475), 36 states have call successors, (36), 21 states have call predecessors, (36), 23 states have return successors, (39), 34 states have call predecessors, (39), 31 states have call successors, (39) [2024-09-12 20:02:38,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 550 transitions. [2024-09-12 20:02:38,721 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 550 transitions. Word has length 66 [2024-09-12 20:02:38,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:38,722 INFO L474 AbstractCegarLoop]: Abstraction has 423 states and 550 transitions. [2024-09-12 20:02:38,722 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 20:02:38,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:38,722 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 550 transitions. [2024-09-12 20:02:38,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-12 20:02:38,726 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:38,726 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:38,726 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-09-12 20:02:38,727 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:38,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:38,727 INFO L85 PathProgramCache]: Analyzing trace with hash 578573902, now seen corresponding path program 1 times [2024-09-12 20:02:38,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:38,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677354502] [2024-09-12 20:02:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:38,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:38,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737813810] [2024-09-12 20:02:38,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:38,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:38,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:38,778 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:38,779 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-12 20:02:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:38,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-12 20:02:38,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:38,984 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 [2024-09-12 20:02:38,989 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 [2024-09-12 20:02:38,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:39,385 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 [2024-09-12 20:02:39,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-09-12 20:02:39,464 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 [2024-09-12 20:02:39,469 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 [2024-09-12 20:02:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:02:39,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:02:39,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:39,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677354502] [2024-09-12 20:02:39,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:39,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737813810] [2024-09-12 20:02:39,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737813810] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:02:39,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:02:39,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-09-12 20:02:39,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171884223] [2024-09-12 20:02:39,860 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:02:39,860 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 20:02:39,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:39,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 20:02:39,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-09-12 20:02:39,861 INFO L87 Difference]: Start difference. First operand 423 states and 550 transitions. Second operand has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:02:44,016 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] [2024-09-12 20:02:44,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:44,474 INFO L93 Difference]: Finished difference Result 512 states and 621 transitions. [2024-09-12 20:02:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 20:02:44,475 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 68 [2024-09-12 20:02:44,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:44,478 INFO L225 Difference]: With dead ends: 512 [2024-09-12 20:02:44,478 INFO L226 Difference]: Without dead ends: 511 [2024-09-12 20:02:44,478 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2024-09-12 20:02:44,479 INFO L434 NwaCegarLoop]: 134 mSDtfsCounter, 265 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:44,479 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 907 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 264 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-09-12 20:02:44,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2024-09-12 20:02:44,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 457. [2024-09-12 20:02:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 339 states have (on average 1.519174041297935) internal successors, (515), 396 states have internal predecessors, (515), 40 states have call successors, (40), 22 states have call predecessors, (40), 25 states have return successors, (46), 38 states have call predecessors, (46), 35 states have call successors, (46) [2024-09-12 20:02:44,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 601 transitions. [2024-09-12 20:02:44,743 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 601 transitions. Word has length 68 [2024-09-12 20:02:44,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:44,743 INFO L474 AbstractCegarLoop]: Abstraction has 457 states and 601 transitions. [2024-09-12 20:02:44,743 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:02:44,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:44,744 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 601 transitions. [2024-09-12 20:02:44,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-12 20:02:44,744 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:44,744 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:44,763 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-12 20:02:44,945 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-12 20:02:44,945 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:44,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:44,945 INFO L85 PathProgramCache]: Analyzing trace with hash -626558336, now seen corresponding path program 1 times [2024-09-12 20:02:44,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:44,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070464642] [2024-09-12 20:02:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:44,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:44,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839288107] [2024-09-12 20:02:44,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:44,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:44,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:44,985 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:44,990 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-12 20:02:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:45,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-09-12 20:02:45,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:45,196 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 [2024-09-12 20:02:45,200 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 [2024-09-12 20:02:45,205 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 [2024-09-12 20:02:45,549 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 34 treesize of output 11 [2024-09-12 20:02:45,583 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 [2024-09-12 20:02:45,596 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:02:45,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:02:45,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:45,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070464642] [2024-09-12 20:02:45,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:45,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839288107] [2024-09-12 20:02:45,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839288107] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:02:45,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:02:45,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-09-12 20:02:45,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182584739] [2024-09-12 20:02:45,845 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:02:45,845 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 20:02:45,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:45,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 20:02:45,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-09-12 20:02:45,846 INFO L87 Difference]: Start difference. First operand 457 states and 601 transitions. Second operand has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:02:46,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:46,399 INFO L93 Difference]: Finished difference Result 519 states and 616 transitions. [2024-09-12 20:02:46,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 20:02:46,399 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 68 [2024-09-12 20:02:46,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:46,402 INFO L225 Difference]: With dead ends: 519 [2024-09-12 20:02:46,402 INFO L226 Difference]: Without dead ends: 518 [2024-09-12 20:02:46,402 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-09-12 20:02:46,402 INFO L434 NwaCegarLoop]: 133 mSDtfsCounter, 233 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:46,403 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 959 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:02:46,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-09-12 20:02:46,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 457. [2024-09-12 20:02:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 339 states have (on average 1.5162241887905605) internal successors, (514), 396 states have internal predecessors, (514), 40 states have call successors, (40), 22 states have call predecessors, (40), 25 states have return successors, (46), 38 states have call predecessors, (46), 35 states have call successors, (46) [2024-09-12 20:02:46,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 600 transitions. [2024-09-12 20:02:46,677 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 600 transitions. Word has length 68 [2024-09-12 20:02:46,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:46,678 INFO L474 AbstractCegarLoop]: Abstraction has 457 states and 600 transitions. [2024-09-12 20:02:46,678 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:02:46,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:46,678 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 600 transitions. [2024-09-12 20:02:46,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-12 20:02:46,679 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:46,679 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:46,695 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-12 20:02:46,879 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:46,880 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:02:46,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:46,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1056896869, now seen corresponding path program 1 times [2024-09-12 20:02:46,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:46,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890889547] [2024-09-12 20:02:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:46,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:46,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137220575] [2024-09-12 20:02:46,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:46,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:46,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:46,912 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:46,917 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-12 20:02:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:47,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 20:02:47,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:47,187 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 [2024-09-12 20:02:47,477 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 [2024-09-12 20:02:47,482 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 [2024-09-12 20:02:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 20:02:47,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:02:47,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:47,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890889547] [2024-09-12 20:02:47,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:47,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137220575] [2024-09-12 20:02:47,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137220575] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:02:47,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:02:47,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-12 20:02:47,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707733091] [2024-09-12 20:02:47,564 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:02:47,564 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 20:02:47,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:47,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 20:02:47,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:02:47,565 INFO L87 Difference]: Start difference. First operand 457 states and 600 transitions. Second operand has 11 states, 9 states have (on average 5.111111111111111) internal successors, (46), 11 states have internal predecessors, (46), 5 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-12 20:02:51,580 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] [2024-09-12 20:02:55,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:02:59,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:03:04,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:03:08,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:03:12,117 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] [2024-09-12 20:03:12,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:12,322 INFO L93 Difference]: Finished difference Result 508 states and 615 transitions. [2024-09-12 20:03:12,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 20:03:12,322 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.111111111111111) internal successors, (46), 11 states have internal predecessors, (46), 5 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 69 [2024-09-12 20:03:12,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:12,324 INFO L225 Difference]: With dead ends: 508 [2024-09-12 20:03:12,324 INFO L226 Difference]: Without dead ends: 507 [2024-09-12 20:03:12,325 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 51 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-09-12 20:03:12,325 INFO L434 NwaCegarLoop]: 126 mSDtfsCounter, 327 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 39 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:12,325 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 939 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 352 Invalid, 7 Unknown, 0 Unchecked, 24.4s Time] [2024-09-12 20:03:12,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-09-12 20:03:12,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 460. [2024-09-12 20:03:12,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 340 states have (on average 1.5088235294117647) internal successors, (513), 398 states have internal predecessors, (513), 41 states have call successors, (41), 22 states have call predecessors, (41), 26 states have return successors, (51), 39 states have call predecessors, (51), 36 states have call successors, (51) [2024-09-12 20:03:12,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 605 transitions. [2024-09-12 20:03:12,556 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 605 transitions. Word has length 69 [2024-09-12 20:03:12,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:12,556 INFO L474 AbstractCegarLoop]: Abstraction has 460 states and 605 transitions. [2024-09-12 20:03:12,556 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.111111111111111) internal successors, (46), 11 states have internal predecessors, (46), 5 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-12 20:03:12,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:12,556 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 605 transitions. [2024-09-12 20:03:12,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-12 20:03:12,557 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:12,557 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:12,570 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-12 20:03:12,757 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-12 20:03:12,757 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:03:12,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:12,758 INFO L85 PathProgramCache]: Analyzing trace with hash 755921883, now seen corresponding path program 1 times [2024-09-12 20:03:12,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:12,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067790202] [2024-09-12 20:03:12,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:12,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:12,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158056591] [2024-09-12 20:03:12,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:12,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:12,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:12,787 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:03:12,788 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-12 20:03:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:12,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-12 20:03:12,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:12,986 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 [2024-09-12 20:03:12,991 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 [2024-09-12 20:03:12,996 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 [2024-09-12 20:03:13,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:03:13,350 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:03:13,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:14,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:14,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067790202] [2024-09-12 20:03:14,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:03:14,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158056591] [2024-09-12 20:03:14,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158056591] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:03:14,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:03:14,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-09-12 20:03:14,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153552175] [2024-09-12 20:03:14,311 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:03:14,311 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 20:03:14,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:14,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 20:03:14,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-09-12 20:03:14,312 INFO L87 Difference]: Start difference. First operand 460 states and 605 transitions. Second operand has 10 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:03:15,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:15,050 INFO L93 Difference]: Finished difference Result 516 states and 616 transitions. [2024-09-12 20:03:15,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 20:03:15,051 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 69 [2024-09-12 20:03:15,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:15,053 INFO L225 Difference]: With dead ends: 516 [2024-09-12 20:03:15,053 INFO L226 Difference]: Without dead ends: 515 [2024-09-12 20:03:15,053 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-09-12 20:03:15,054 INFO L434 NwaCegarLoop]: 133 mSDtfsCounter, 216 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:15,054 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1001 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:03:15,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-09-12 20:03:15,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 462. [2024-09-12 20:03:15,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 341 states have (on average 1.501466275659824) internal successors, (512), 399 states have internal predecessors, (512), 41 states have call successors, (41), 22 states have call predecessors, (41), 27 states have return successors, (53), 40 states have call predecessors, (53), 36 states have call successors, (53) [2024-09-12 20:03:15,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 606 transitions. [2024-09-12 20:03:15,278 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 606 transitions. Word has length 69 [2024-09-12 20:03:15,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:15,279 INFO L474 AbstractCegarLoop]: Abstraction has 462 states and 606 transitions. [2024-09-12 20:03:15,279 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 20:03:15,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:15,279 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 606 transitions. [2024-09-12 20:03:15,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-12 20:03:15,279 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:15,280 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:15,293 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-12 20:03:15,480 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-12 20:03:15,480 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:03:15,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:15,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2051528169, now seen corresponding path program 1 times [2024-09-12 20:03:15,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:15,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453258403] [2024-09-12 20:03:15,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:15,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:15,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222860783] [2024-09-12 20:03:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:15,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:15,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:15,508 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:03:15,514 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-12 20:03:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:15,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-09-12 20:03:15,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:15,716 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 11 treesize of output 7 [2024-09-12 20:03:15,723 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 [2024-09-12 20:03:15,727 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 [2024-09-12 20:03:16,068 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 30 treesize of output 14 [2024-09-12 20:03:16,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-09-12 20:03:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:03:16,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:18,338 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:03:18,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:18,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453258403] [2024-09-12 20:03:18,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:03:18,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222860783] [2024-09-12 20:03:18,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222860783] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:03:18,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 20:03:18,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2024-09-12 20:03:18,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367675083] [2024-09-12 20:03:18,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 20:03:18,339 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 20:03:18,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:18,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 20:03:18,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-09-12 20:03:18,340 INFO L87 Difference]: Start difference. First operand 462 states and 606 transitions. Second operand has 17 states, 14 states have (on average 6.0) internal successors, (84), 13 states have internal predecessors, (84), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-12 20:03:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:22,996 INFO L93 Difference]: Finished difference Result 529 states and 627 transitions. [2024-09-12 20:03:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 20:03:22,997 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 6.0) internal successors, (84), 13 states have internal predecessors, (84), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 69 [2024-09-12 20:03:22,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:22,999 INFO L225 Difference]: With dead ends: 529 [2024-09-12 20:03:22,999 INFO L226 Difference]: Without dead ends: 528 [2024-09-12 20:03:22,999 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 117 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2024-09-12 20:03:22,999 INFO L434 NwaCegarLoop]: 161 mSDtfsCounter, 392 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:23,000 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 1902 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-09-12 20:03:23,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-09-12 20:03:23,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 462. [2024-09-12 20:03:23,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 341 states have (on average 1.498533724340176) internal successors, (511), 399 states have internal predecessors, (511), 41 states have call successors, (41), 22 states have call predecessors, (41), 27 states have return successors, (53), 40 states have call predecessors, (53), 36 states have call successors, (53) [2024-09-12 20:03:23,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 605 transitions. [2024-09-12 20:03:23,223 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 605 transitions. Word has length 69 [2024-09-12 20:03:23,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:23,224 INFO L474 AbstractCegarLoop]: Abstraction has 462 states and 605 transitions. [2024-09-12 20:03:23,224 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 6.0) internal successors, (84), 13 states have internal predecessors, (84), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-12 20:03:23,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:23,224 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 605 transitions. [2024-09-12 20:03:23,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-12 20:03:23,225 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:23,225 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:23,242 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-12 20:03:23,425 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-12 20:03:23,426 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-09-12 20:03:23,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:23,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1595935475, now seen corresponding path program 1 times [2024-09-12 20:03:23,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:23,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931825455] [2024-09-12 20:03:23,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:23,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:23,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055854417] [2024-09-12 20:03:23,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:23,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:23,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:23,452 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:03:23,456 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-12 20:03:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:23,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 20:03:23,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:23,646 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 [2024-09-12 20:03:23,682 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 [2024-09-12 20:04:27,934 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 20:04:27,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 208 [2024-09-12 20:04:28,104 INFO L349 Elim1Store]: treesize reduction 12, result has 90.1 percent of original size [2024-09-12 20:04:28,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 36 treesize of output 124 [2024-09-12 20:04:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 21 proven. 3 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:28,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:04:29,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:29,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931825455] [2024-09-12 20:04:29,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:29,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055854417] [2024-09-12 20:04:29,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055854417] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:04:29,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:04:29,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-09-12 20:04:29,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89026361] [2024-09-12 20:04:29,247 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:04:29,247 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 20:04:29,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:29,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 20:04:29,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=403, Unknown=14, NotChecked=0, Total=506 [2024-09-12 20:04:29,248 INFO L87 Difference]: Start difference. First operand 462 states and 605 transitions. Second operand has 20 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 8 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 20:04:33,302 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] [2024-09-12 20:04:37,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-12 20:04:41,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:04:45,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-12 20:04:57,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-12 20:05:01,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-12 20:05:06,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-12 20:05:10,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-12 20:05:14,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-12 20:05:18,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-12 20:05:30,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-12 20:05:34,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-12 20:05:38,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]